高中英语作文教案教学设计（经典20篇）

On New Years Eve, I turned on the TV as usual to watch the Spring Festival

Gala, and watched it for more than half an hour. Suddenly, an unexpected program

caught the whole familys eyes and deeply moved us. On the screen, there was the

hospital background of Wuhan city. Doctors and nurses were wearing white

protective clothing, and their faces were wearing plastic transparent covers

integrated with clothing. They were fighting against the virus and life danger

Time race. With the host reciting "love is a bridge", I felt a torrent in my

heart. I kept bumping and bumping. I knew that the program was added temporarily

because of the severe situation. Although it had not been rehearsed, it still

made many people cry. No one in the hospital would want to hide, no one would be

lazy, no one would want to make a phone call with his family They regard those

suffering compatriots as their parents and children, and they are determined to

save these patients just like their families.

Christmas Day is very popular around the world, when that day comes, we can

see the Christmas products sell everywhere, though Christmas Day is not

originating from China, in our country, more and more people spend that day. A

foreigner pointed out that Christmas meant to be grateful for them, while for

Chinese people, it was just a day for celebrating. To me, Christmas indeed means

a day to have fun.

When I was small, I did not have the concept of Christmas, because in my

mind, I only knew Chinese traditional festivals, I liked Spring Festival best, I

could get a lot of money from parents. When I went to high school, all of my

friends would talk about Christmas Day when the day was near, so I started to

know it. Almost every young people like Christmas, but if you ask them what the

meaning of the day, less of them can answer.

The meaning of Christmas Day is to remind people of Jesus’s birth, it is so

important for the western people, but for me, I only want to have fun, everyone

is celebrating it, so I join them, being happy, that’s enough for me.

The spring festival is Chinese most traditional festival every 365 days.

Each Chinese pay much attention on it. Every year about 15 days before spring

festival， the migrate works and white-collars are beginning crowded

home-returning.

But， in recent years， with the development of the world， many different

attitudes between the young and the old towards the spring festival come forth.

The old are still pay more attention to the spring festival， but the young

gradually change the mode to spend their spring festival holiday， such as travel

overseas.

When I am a childhood， I celebrated the spring festival with my family

about a month in my winter vacation in traditional way， such as helping cleaning

our houses， putting red couplets on gates， setting off firecrackers， and wear

new clothes. Now， I spend only 4 or 5 days at home with my parents in

celebrating the spring festival， then I will hurry back to work. Maybe in the

near future， I will have no time celebrating spring festival hometown， and my

parents have to come to stay with us in the city.

Whether or no， I like the spring festival. It is one of the most important

part of our Chinese culture. However busy I am， I will try my best to

celebrating it with the traditional way to protect those our ancestor has leave

behind.

This morning i went to the english corner which is in the park near my home. it is three years since it was founded.

Many middle school students as well as college students and foreigners take part in the activity. people there practice speaking english by talking about something interesting. people also exchange the experience in english learning. i think it is a good chance for me to use what i have learnt in my english class. i felt very cool after i got back home.

I’ll try my best to learn english better, for it is so widely used in the world.

一、单元回顾，体会感动

1.本组所学课文内容有一个共同点是什么？（故事很感人）

2.文中哪些地方最让你感动？请说一说。

二、揭示课题，明确要求

1. 揭题。

本组课文中向我们讲述了几个可歌可泣、令人震撼的事，深深地触动了我们的心弦。生活中也有许许多多这样令人感动的事例，这节课就让我们来写一写感动（板书：一件令人感动的事）

2.破题。

读题质疑：题目中的关键词是什么？（感动）谈谈你对题目的看法。

三、筛选素材，开启思路

1.资料介入。

（1）播放公益广告视频：五六岁的孩子用稚嫩的双手颤巍巍地为妈妈打来洗脚水，要为他妈妈洗脚。

（2）播放《感动中国》剪辑视频：湖南怀化学院经管系03级学生洪战辉背着妹妹上学的故事片断。

（3）上述两个资料中最感动你的是什么？

2. 在我们的生活中，在我们的身边也有许多令人感动的事。想一想，曾经看到、听到或亲身经历的事中，哪些深深地触动过你的心灵，使你最感动，令你最难以忘怀？请选一件最让你感动的事情，认真回忆事情的经过，讲给同学听。要把事情说清楚、讲具体，然后想一想，应该怎样讲述才能打动人。

3.小组内讲述，互相倾听并评议，指出优缺点，帮助改进。

4.集体交流汇报。小组推荐一名代表讲述，其他同学认真倾听并评议。（出示评议要求：A.内容是否清楚、具体；B.让人是否受到感动；C.语言是否准确通顺等。）其他同学还可以在做评委或小记者，对同学的讲述进行质疑或采访。

四、明确要求，自主写作

1.这是一次叙事的习作。请结合写作经验说一说，怎样写好叙事的作文？（事例要写清楚，写具体；按照一定的顺序写；注意突出人物的特点等。）

2.读一读教科书第87页，交流本次习作的要求，想一想怎样把事例写得感人。（事例具体，条理清楚，有真情实感，可以关注环境描写，善于巧妙运用写人的方法写出人物的外貌、语言、神态、动作、心理活动，可以抓细节等。）

3.学生习作，教师巡视，个别指导。

五、修改习作，锦上添花。

1.自改。

自己心血的创作如同自己的儿女，一定要好好善待。认真读读自己的作品，看看文章是否感动人，是否流露出真情实感，有没有书写错误、字词不当、语句不通、表达不明的地方，好好改一改。

2.互改。

他山之石可以攻玉。同桌互改，好好读一读对方的作品，学会欣赏别人的长处。在对方文章中用不同的记号画出你喜欢的字、词、句、段。在你认为可以写得更好的地方改一改，或写下你的修改建议。

3.集体评改。

（1）欣赏点睛之题。

教师根据巡视的情况，请出作文题目新颖的同学大声朗读其作文题目。

（2）请两名作者到台前朗读。其他同学认真倾听，师生共同欣赏、共同修改。

（3）欣赏妙趣横生的开头和妙趣无穷的结尾、衔接巧妙的过渡。请出学生代表同学大声朗读这些精彩的地方。

4.自主二次修改。

结合同学的写作优点，根据自己的思考，二次修改自己的作文。

I havent write diaries for a period of time. I am now writing this just want to remember one thing. My study has fallen behind a lot this term. I can keep my score in the top ten in the whole school ranking before. But this term I fall behind. I nearly draw back to fifty. I know the reason is because I am too arrogant. I think I can be the best without studying hard. So I usually not pay too much attention on my study. When I find myself lag behind, I comfort myself it is accident. I have learnt a serious lesson this time. So, I want to write it down to warn myself.

我已经有一段时间没有写日记了。我现在写这篇日记只是想要记住一件事。这个学期我的学业落后了很多。我成绩之前可以保持在全校前十名。但这个学期我后退了。我差点就退到了五十名了。我知道原因是我太自大了。我觉得我不努力学习也可以保持最好。所以我一般都不怎么在意我的学习。当我发现自己落后时，我安慰自己只是意外。这一次我吸取了深刻的教训。所以，我想把它写下来以此警示着我。

[Dear Diary我的日记高中英语作文

JK Rowling, who is one of the most well-known writers in the world, was born in Gwent on July 31, 1965.

She is famous for her Harry Potter fantasy series, which have been sold more than 400 million copies and adapted for popular movies.

As the first person to become a billionaire by writing books in the world, JK Rowling was ranked as the 48th most powerful celebrity by Forbes, and she was named “The Most Influential Woman in Britain” in October 2010. What’s worth mentioning is that she gives much of her wealth and time to charity, who sets agood example to other famous people.

为丰富中学生的环保知识，培养防护意识，学校英语社针对我国雾霾天气频现，危害严重的现状，决定在学生中举行英语征文比赛。请你根据以下提示写一篇短文参赛。

1．雾霾天气的危害：

2．雾霾产生的原因；

3．自我防护的方法。

参考词汇：尾气排放：exhaust emission

雾霾天气：hazy weather

注意：1．词数：120_-150；

2．可适当增加细节，以使行文连贯。

Nowadays, the hazy weather frequently appears in our country. It has not only done harm to people’s health, but also affected the public transportation. Terrible accidents happen every now and then, some highways have to be shut down because of the low visibility.

Obviously, air pollution is the main factor that has resulted in the frequency of hazy weather. At the same time, smoke from burning coal and all kinds of dust are also important factors. Besides, exhaust emission from cars and buses has made the situation even worse.

So proper measures should be adopted to deal with the serious problem. To students, opportunities for outdoor sports activities should be decreased, washing faces and hands with running water after each outing is also important, and do not forget to wear a good-quality mask to protect yourself while going out.

I hope we will regain a fresh, clean and bright world soon.

[高中英语作文：雾霾

As soon as I was enrolled in college I reit a big burden off my mind. So did my classmates. We just wanted to relax. But at our first English Lesson on how to improve our study the teacher told us," There is no end to learning. You can only become a top student with additional work." And she says hard work is rewarding.

The teachers words awakened me. In fact everyone in the world is always learning. Mans talents are like wild plants. They need cutting and pruning with the tool of learning, We lears not only inside the classroom but also outside the classroom. Learning is a process in which man adapts to his surroundings. It is driven by mans desire to win respect and to contribute to society. It is the curiosity for knowledge stimulated by knowledge itself." To learn is to be young. Not to learn is to die." This saying applies to every society and to all ages.

Indeed, everyone living on earth is learning all the time. Man learns not only from books but also from his own experience We can not hope that as long as we learn we will gain benlfits. Efficient study is inseparable from good methods and motivation, A man of a strong sense of responsibility and full of ambition is insatiable in learning.

I entered the university after much efforts. I know it is only the first step on the road leading to the sea of knowledge. It is but the first page in the book of science. The further away ! am off shore, the more far-sighted! will be. The more you learn. the more you feel the need to learn. Art is long, life is short.

一进大学，我感到思想上卸了一个包袱，就像我们的同班同学一样，大家都想放松一下。可在如何提高学习水平的笫1堂英语课上，老师就对我们说：“学无止境。只有通过努力才能成为优等生。”同时还说努力学习是会有报偿的。

老师的话唤醒了我。事实上，世上每一个人都在学习。人的才能如野生植物，需要用学习这把工具予以修剪。我们不仅在课堂上学，而且还要在课外学。学习就是不断适应环境的过程。学习受“人要赢得尊重，就得对社会做贡献”的欲望所驱使。学习就是知识本身所引起的对知识的好奇。“学习使人年轻，不学习等于死亡。”这句话造用于任何社会、任何时代。

确实，世人无时不在学习。人不仅从书本上学，而且在经验中学。我们不能指望只要学习就必有所获。有效的学习是与好的方法与动机分不开的。责任心强且有抱负的人会学而不厌。

经过努力，我进了大学，但我知道，这只是通往知识海洋上的第一步，只是科学这本书中的第1页。离岸越远，视野越宽。越学越想学。生命短暂，艺术无涯。

in my mind, everyone shall have his own dream. i think that having a dream means that we have an idea, and then we will do all the things to achieve the target. as long as we have a goal to be realized, we won’t be blind at least.

my dream is to become a successful stateman, helping those people who need help with their rights. of course, to be a good stateman is very difficult, but i will do whatever i can do to keep everyone satisfied. thats my dream. i want to try my best to help the poor sick people of our country. china is a developing country which needs good stateman,especially in the countryside and distant villages.

now i’m a junior student on grade one, my dream is also that although at present i’m good at study, i’ll still try my best to be the study winner. now everything i do is close to my dream. i feel life is fill with hope and is colorful, and i have enough confidence to realize my dream.

小学人物作文是一个必学的部分，那么，小学人物作文教学设计要怎么写呢？下面是小编整理的小学人物作文教学设计，欢迎大家阅读！

一、 教学目标

1 通过指导、练写与评讲让学生掌握抓住人物特点来写及以事表人的方法，激发习作的成功感。

2 通过回忆、描述、赞美爸爸的优秀品质，懂得欣赏爸爸、感受亲情。

二、 教学准备

作文纸、彩笔、课件

三、 教学过程

1）高声赞美：同学们，谁能告诉老师心里话？在家里，你最爱的是谁？

母亲是生我养我的最亲切最温柔的亲人，她对我们无私的爱也许还能摸得着、看得见。但是，据科学研究的报道说，在一个家庭里，父亲的形象与品格对孩子一生的影响更为深远。因此，我想，今天我们就以“爸爸真——”为题，走进爸爸的世界，为即将到来的父亲节送上一份心灵的礼物。

老师先作一项心理调查：认为爸爸是一位好父亲的举手；爸爸让你自豪的举手；老师带个头，赞一赞自己的爸爸；（幻灯）谁敢响亮地赞美爸爸。（用爸爸真——说题）

2）范文引路：赞美爸爸不能空喊口号，要把他给你留下的印象最深地方——也就是人物的特点抓住，（板书）才会赞得理有据，有事有实。究竟怎样抓住人物的特点呢？——先看这篇作文（教师朗诵，学生思考：爸爸是怎样一个人？哪些地方写出爸爸的特点？（点出特点）（表扬老师）

学会欣赏：由此可见，一个人物要给人留下深刻的影响，必须抓住人物在外貌、性格等方面的特点。①你爸形象如何？谁来说一说。②你爸是怎样一个人，你能用以下的句式说说爸爸吗？——句型练习（任选一种）

深情回忆：过渡：刚才，我们抓住人物的特点来说爸爸，你这篇作文已经成功了一半。但人物性格特点的表现并不是像外貌那样作几句精要的描写，必须通过真实具体的事才能表现一个人，这叫着——以事表人。（板书）特别是这件事关键时候爸爸的语言、动作、神态的描写尤其重要。让我们深情回忆自己的爸爸，值得自豪的爸爸。用简笔画的形式画出来，边画边在脑海中说爸爸。麦老师教作文说得好可以加分。

真情表述：学生说事，教师评。（投影展示成果）

情系笔尖：学生练写，教师评奖。

总结语：同学们，在我们成长的道路上，母亲以温柔女性的形象给我们以无微不至的爱，这份无私的爱像涓涓细流，温暖着我们的心田，烙在我们的心坎上；但父亲，在社会家庭的角色负担心理压力尤重的父亲，一个有苦自己尝，有泪不轻弹的父亲往往对家庭的对子女的爱表现得更为严肃与深沉，让我们在生活中更注意观察和研读自己的父亲，从父亲和其他亲人的身上汲取更多的人生营养，这是老师在这两节课后交给大家一辈子的功课。

When students go into college, they need to join in the group, because there is no way for them to live alone. They have new classmates and roommates. How to fit in the group is the main problem for them to solve. A successful student can handle it well.

To fit in the group, the students must have the collective consciousness. As most students are only child in the family, so they don’t know how to get along well with their roommates. They always notice themselves and ignore others’ feelings. But as they live in a dormitory, they need to realize these. Only in this way can make everybody live in a harmonious environment.

To fit in a group, students also need to be honest. As many students live in a common surrounding, it is easy to have conflict, because different cultures happen among students from different regions. Then it is important to be honest and try to talk about the problem, or the conflict will bigger.

It is a big lesson for students to learn get along with others. The one who handles well are trend to be get successfully easily.

教学目的：

1．使学生掌握把一个较大数改写成用万或亿作单位的数的方法，以及根据要求保留一

定的小数位数。

2．通过学生的探索，增进学生对数学的理解，培养学生迁移知识和灵活运用知识的能力。

3．使学生在数学活动中获得成功的体验，养成独立思考和探究问题的意识、习惯。

教学重点：

1．能够应用移动小数点位置的方法，把较大的数改写成用万或亿作单位的小数。

2．改写过程中注意计数单位及单位名称。

教学难点：

根据要求保留一定的小数位数。

教具准备：

主题图、小黑板

学具准备：

口算卡

教学过程：

一、创设情景，生成问题。

1．谈话：

你知道你的头发大约有多少根吗？（80000到90000根。）

根据学生的回答相机板书：

80000840008600090000

问：你会读吗？怎样把它们改写成用万作单位的数？

2．比较它们的特点？

它们都是把一个以个为单位数写成以万位单位的数

不同的：

80000和90000；是整万的数可以直接改写成以“万”作单位的数

84000和86000不是整万的数，为了读写方便，常常通过移动小数点位置的方法来改写。

3．导入课题：把较大的数改写成用“万”或“亿”作单位的小数。

二、自主探究，合作交流

1．学习例题2

（1）出示主题图

（2）读题，理解题意：

木星的直径是142800千米，它离太阳的距离是778330000千米。

它的直径是多少万千米？它离太阳的距离是多少亿千米？

（3）思考：把142800千米改写成用“万千米”作单位的数，在改写时遇到什么问

题？应怎样改写？应该用多少来除？（10000）

小数点应该向那个方向移动几位？（向左移动四位）

改写成以万为单位的数：小数点向左移动4位，在万位的右边，点上小数点，加上

“万”字。

问：万字能不能不写，为什么？（去掉所表示的数值不一样。）

改写后这两个数的大小关系怎么样？这两个数相等。

板书：142800千米＝14.28万千米

（4）说明：为了简便要在万位后面点上小数点，去掉小数末尾的0

2．独立尝试改写。P74页的“做一做”第1题。

24800＝2.48万

既然把一个较大的数改写成用“万”作单位的数，只在万位后面点上小数点，在

写上“万”字，那么要把一个较大的数改写成用“亿”作单位的数，怎么办？

3．改写成用“亿”作单位的数，再求近似数。

（1）板书：把778330000千米改写成用“亿”作单位的数，再保留一位小数。

（2）读题，理解题意。

（3）独立尝试改写。

（4）反馈：改写的方法。

改写成以亿为单位的数：小数点向左移动8位，加上亿字。

相机板书：778330000千米＝7.7833亿千米。

像这样把778330000千米改写成用“亿”作单位的数是7.7833亿千米，

小数点后有4位，小数位数太多，往往实际又没有用，这时就可以根据需要保留一定的小数位数。

（5）思考：怎样保留一位小数？说一说保留一位小数的方法。

7.7833亿千米的小数点后面第二位满5，用四舍五入法，保留一位小数。

板书：≈7.8亿千米

说明：如这道题保留两位小数应该是多少？说说你是怎么想的？

（6）独立改写。P74页的“做一做”第2题。

得出：34528600000＝345.286亿≈345.29亿

4．试一试：如果把778330000千米少一个0，变成77833000千米你还会做吗？

把77833000千米改写成用“亿”作单位的数，并保留两位小数。

问：77833000是8位数，亿级一个计数单位也没有。亿级没有计数单位，改

写成用“亿”作单位的数，整数部分是多少？你是怎么想的？

（在小数的前面写0，或者用0占位。）

师说明：当改写后的小数部分小于1时，要在整(转载于:www.hnNscy.CoM:1338300000改写成用亿作单位的数)数部分用0占位。

说一说：改写后是多少？根据学生的回答板书：77833000千米=0.77833亿千米保留两位小数：≈0.79亿千米

5．归纳：把一个数改写成用“万”或“亿”作单位的数要注意什么？

（1）看清题目，是把一个大数目改写成用“万”还是用“亿”作单位的数。

（2）在万位或亿位的右边点上小数点，在数的末尾写上“万”或“亿”字。

（3）如果原数不满万位或亿位，要用0来补足。整数，小数部分哪一位没有，也

要用0来补足。

三、巩固应用，拓展提高

现在你会改写了吗，来试一试。

1．判断。（对的画“√”，错的画“×”）

（1）、2486200000≈25亿（）

（2）、8.009保留一位小数是8.1（）

（3）、5500改写成用万作单位的数是0.55万。（）

2．把下面个数改写成以万为单位的数（保留两位小数）

台湾岛是我国第一大岛，面积35990平方千米。

海南岛是我国第二大岛，面积34000平方千米。

3．求下面各小数的近似数。

（1）、3.470.2394.08（精确到十分位）

（2）、5.3446.2680.402（省略百分位后面的尾数）

四、回顾整理，反思提升

今天你有什么收获？我们为什么要用“万”或“亿”作单位来改写大数目？改写时要注意什么？

1338300000改写成用亿作单位的数篇二：2016最新冀教版数学四年级上册《改写成以亿作单位的数》教学设计

改写成以亿作单位的数

教学目标：

1.掌握将整亿数改写成以“亿”作单位的数的方法，并能正确改写。

2.掌握将非整亿数用“四舍五入”法改写成以“亿”作单位的近似数，并能正确改写。

3.进一步理解“改写”和“略写”的含义。

教学重点：

将整亿数改写成以“亿”作单位的数。

教学难点：

掌握将非整亿数用“四舍五入”法改写成以“亿”作单位的近似数的方法。教学过程：

一、旧知铺垫

1.把下面各数改写成以“万”作单位的数。

250000200000058000000

过程要求：

（1）学生独立完成。

（2）展示学生改写的结果。

（3）说一说你是怎样改写的？要注意什么？

2.把下面各数改写成以“万”作单位的近似数。

1385641284385

过程要求：

（1）学生独立完成。

（2）展示学生改写的结果。

（3）说一说你是怎样改写的？要注意什么？

二、探索新知

师：今天我们一起来学习亿以上数的“改写”和“略写”。

1.亿以上数的改写。

把2500000000改写成以“亿”作单位的数。

（1）学生独立尝试，学生借助改写万以内的数的方法不难完成这道改写。

（2）展示学生改写的结果。

2500000000=25亿

（3）说一说，你是怎么改写的。

学生回答，教师板书配合说明。

2500000000

25亿

（4）即时练习。

20000000000=（）亿10800000000=（

2.亿以上数的“略写”。

把1276270000改写成以“亿”作单位的近似数。

（1）学生独立完成。

（2）展示学生改写的结果。

1276270000≈13亿

（3）说一说你是怎么做的。

学生回答，教师板书配合说明。

1276270000

13亿

引导提问：

①原来亿位上的数字是多少？（12）

②改写后为什么成“13亿”。根据什么？

③为什么结果用“≈”，与上一题有什么不同？

（4）即时练习。

把19976000000改写成以“亿”作单位的近似数。

过程要求：

①学生独立完成。

②与学生交流解决问题的方法和过程。

③全班反馈，说一说你是怎么做的？

板书：19976000000≈200亿）亿

三、巩固练习

完成课本中的“练一练”。

1.第一题。

（1）学生独立完成。

（2）提问：这里的“6亿户”是精确数还是近似数？

2.第2题。

（1）读题，了解题目中的有关信息。

（2）选择那些数以“万”作单位的，那些数以“亿”作单位？

（3）学生进行“略写”。

1338300000改写成用亿作单位的数篇三：《把亿以上的数改写成以“亿”作单位的数》说课稿

《大数的认识—把亿以上的数改写成以“亿”作为单位的数》

说课稿

广西自治区北流市**镇**小学

尊敬的各位评委、专家：

您们好！今天我说课的内容是人教版数学四年级上册第一单元中《把亿以上的数改写成以“亿”作单位的数》。下面，我将从教材分析、学情分析、教学过程等五大方面进行说课。

一、说教材

1、教材分析

这节课的内容是在学生已经掌握了整万数和非整万数的改写的基础上进行教学的。通过这节课的学习，使学生掌握如何把整亿和非整亿的数改写成以亿作单位的数，并能够准确地运用于日常生活中数的描写。

2、说目标

根据教材的知识特点和学生已有的知识基础，结合新课标的理念，我制定了以下的教学目标：

（1）使学生学会把整亿数改写成以“亿”作单位的数的方法，并能正确熟练

改写。

（2）学会把非整亿数用“四舍五入”法改写成以“亿”作单位的数，并能正

确熟练改写。

（3）区分“=”和“≈”的使用

3、教学重难点：

重点：把整亿数和非整亿数改写成以“亿”作单位的数

难点：“四舍五入”的正确使用

4、教学时间：

一课时

二、说学情

本节课的教学对象是四年级的学生，他们有一定的学习理解能力，并且学习掌握了整万数和非整万数的改写作为基础铺垫进一步学习的，因此，本节课的内容比较容易掌握。

三、说教法、学法

教学活动必须建立在学生的认知发展水平和已有的知识基础上，因此我在教学中注重以学生为主体，引导学生进行自主探索、讨论交流和归纳总结，让学生成为学习的主人，让学生在探索和交流中感受数学并能解决实际问题。

四、教学准备

我将采用先进的多媒体，使用ppt直观教学手段,这样更容易吸引学生的眼球和激起学生的学习兴趣，达到较好的教学效果。

五、说教学过程

为了实现教学目标，突破教学重难点完成教学任务，我将教学过程预设为四个环节来进行教学。

（一）复习旧知，激情引入

1.把下面各数改写成以“万”作单位的数：

250000=25万2000000=200万58120000=5812万

2.把下列各数用“四舍五入”法改写成以“万”作单位的数：

138564≈140000=14万1284385≈1280000=128万

这一环节，我先让学生回想整万数和非整万数的改写成以“万”作单位的数的方法，请学生说一说并把方法归纳出来。

（设计意图：这一环节的设计既起到复习旧知识的作用，又为今天的新课作铺垫起导入的作用。）

（二）合作探究，体验新知

1、多媒体展示教材例3中第一个数：300000000=____亿

教师将利用学过的知识引导学生思考，怎么试着把整亿数改写成以“亿”作单位的数，请学生说说各自的方法，教师确认答案后，再一起讨论总结方法。

2、展示教材例3中第二个数：1276270000≈____亿

这个环节我先让学生回想如何把非整万数改写成以“万”数作单位的数的，说说方法，然后让学生按照这个方法，试着把非整亿数改成以“亿”为单位的数。期间，我会提醒大家注意正确使用“四舍五入”法、使用分级线和写上单位“亿”字。

3、小组内合作交流，说说各自的方法，然后尝试把方法总结出来。并指名说一说，我再加以概括总结。

（设计意图：新课体验环节，以学生自主探索为主，合作交流为铺，让学生在自主探索中体验数学，找到改写数的方法，并培养学生进行归纳总结方法的习惯。）

（三）巩固提升，乘胜追击

1、46000000000=____亿30500000000=____亿

20897000000≈____亿987654000≈____亿

2、课件展示书本30页第10题

给予学生充足的时间思考，让学生在练习中加深新知识的记忆，同时考查学生对新知识的掌握、运用情况。教师同时巡逻，及时辅导学生。

（设计意图：练习是学生掌握、熟练运用知识的重要手段，有利于帮助学生记忆知识点。练习分为两层，由浅入深，由易到难，充分考查了学生对知识的掌握情况。）

（三）总结评价，谈谈收获

通过本节课的学习，您收获了哪些知识和方法？您能跟大家一起分享吗？这样能让学生充分体会成功收获知识的喜悦。最后将使用课件展示本节课的重难点以及改写的方法，让学生读一读更深入脑海。

六、板书设计

本节课的板书设计内容简洁、有条理，让学生一目了然，这样更能突出本节课的知识点。

把亿以上的数改写成以“亿”作单位的数

1、300000000=____亿（去掉亿位后面8个“0”）

2、1276270000≈____亿

20897000000≈_____亿

（“四舍五入”看亿位后面所有数的最高位，若这个数等于或大于5，就向前一位进一，再省去后面8位数；若小于5，就直接舍去后面8位数字，再加上一个“亿”字。）

With the development of technology, today we live in the world with high technology. People seem to cant live without computer and smart phone, once they dont have smart phone at hand for a while, the seem to be lost and feel something miss in their life. When I talk to my friends at table, I find them always play smart phones or check on the text all the time. Though we sit face to face, the distance between us is so far. The high technology brings isolation between people. Some people dont often visit their parents and friends, for they believe that a call can solve all the things. Communication in face to face is far more important than a call. It is time for some people to put down their smart phones for a while when they are communicating to others.

the 15-day celebration of chinese new year

the first day of the lunar new year is the welcoming of the gods of the heavens and earth.many people abstain from meat on the first day of the new year because it is believed that this will ensure long and happy lives for them.

on the second day, the chinese pray to their ancestors as well as to all the gods. they are extra kind to dogs and feed them well as it is believed that the second day is the birthday of all dogs.

the third and fourth days are for the sons-in-laws to pay respect to their parents-in-law.

the fifth day is called po woo. on that day people stay home to welcome the god of wealth. no one visits families and friends on the fifth day because it will bring both parties bad luck.

on the sixth to the 10th day, the chinese visit their relatives and friends freely. they also visit the temples to pray for good fortune and health.

the seventh day of the new year is the day for farmers to display their produce. these farmers make a drink from seven types of vegetables to celebrate the occasion. the seventh day is also considered the birthday of human beings. noodles are eaten to promote longevity and raw fish for success.

on the eighth day the fujian people have another family reunion dinner, and at midnight they pray to tian gong, the god of heaven.

the ninth day is to make offerings to the jade emperor.

the 10th through the 12th are days that

[高中关于元宵节的英语作文

Today is my birthday and Im so excited about it.In the morning I put a

note on the table for my mum and it said,"Today is my birthday,dont forget

it!"At school,I got many gifts and cards for my classmates and had a lot of

fun.But I was still expecting the birthday party after school.

When it was time to leave school I couldnt wait to go home.When I open the

door,there wasnt anybody in the house.There was only a note that said,"Coming

home late tonight,mum and dad."I try to call them but there was no answer.I was

so shocked,do they forget my birthday?How could this be!I was so sad that I

couldnt eat anything.I just did my homework and waited for them.

And then,things changed completely.It was about time for dinner,my mother

called and told me to go to the restanrant near our house.When I got there I

couldnt believed my eyes.Everybody was there:my parents,my relatives,my friends

and even my classmates.There was so many gifts and a big cake.What a surprising

birthday party!We had a good time and it was the best birthday party ever.

Astime goes by, people are being busier and busier with working, such as signingtheir contracts, meeting their customers, drawing up the balance sheets oftheir companies and so on. In this circumstance, people forget our mostexcellent skill--smile.

随着时间的推移，人们在工作上越来越忙，如签订合同，见客户，制定企业资产负债表等。在这种情况下，人们忘记了我们最优秀的技能——微笑。

Thereare a great many kinds of power of smile. First of all, common touch can beshowed by a kind smile. Imagine that you go to a company to attend an audition.With a confident smile, you are more likely to answer the question better. Furthermore,smile can eliminate angry. As a philosopher said, smile before you begin to getangry. The last but not the least, it reflects calm of a person when he is indanger or in trouble.

微笑的力量很多。首先，微笑可以作为平易近人的一种表现。想象一下，你去一个公司参加面试。带着自信的微笑，你有可能会更好地回答问题。此外，微笑可以消除愤怒。一个哲学家说过，在你开始生气之前微笑。最后但并非最不重要的，当一个人处于危险或者麻烦的时候，微笑反映了一个人的镇定。

Thebeneficial aspects cannot be stated completely in this passage. But you canunderstand its power when you smile.

微笑的好处在这里是无法一一列举的。但是，在你微笑的时候你可以理解它的力量。

[高中英语作文：微笑的力量

温室里的花朵永远都是最脆弱的，学会独立是很重要的。下面是小编为你整理的关于独立的高中英语作文，希望你喜欢! 关于独立的高中英语作文篇1

Today in China,many families have only one child.So the children usually doted upon by all family members.Gradually some of them get used to depending on their parents and lack the ability to solve problems independently.

There are some ways to help children to be independent.Firstly,the child should have a chance to see the world around him.He must understand that there are various competitions in this world,and everyone can find his right position in the society only by individual efforts.Secondly,the parents should give the child enough help to make him feel comfortable.Its impossible to ask a child not to depend on parents at once.A child needs help from the beginning.Without any help,the child may lose his faith.At last,parents should let his child make decisions,which can temper his ability to deal with problems.

No parents can accompany the children for the whole life.It is the child himself who is responsible for her own fate.Only an independent person can live and succeed in this world.

今日的中国,很多家庭都只有一个孩子.所以孩子往往成为全家人生活的焦点.有些孩子逐渐养成了依赖家长的习惯,从而导致他们缺乏自己解决问题的能力.

这里有几点可以帮助孩子变得独立.首先,孩子应当正式他周围的世界,每个人只有通过自己的努力才能在社会中找到他自己的位置.其次,家长应给予孩子足够的温暖让他感到舒适.不能要求每个孩子从不依赖父母.孩子需要一个起跑的平台.没有任何帮助,孩子或许会失去信念.最后,家长应让孩子做决定,如何依靠自己的能力解决问题.

没有父母可以陪伴孩子一辈子.决定自己的命运是孩子肩负的责任.只有独立的人才能在这个世界生活并取得成功. 关于独立的高中英语作文篇2

When I was very small, I was so envious about the adults, because they could do whatever they wanted and did not have to depend on their parents. For me, I did not have money and my parents limited my pocket money, so I couldn’t spend the money to buy whatever I wanted. It seems to me that being an adult is my only wish. Some day, I learned from the movie that being an adult was not that as perfect as I thought. In the movie, the man struggled to earn money to pay his bills, what’s more, he had to stay away from his family. Loneliness was always around him. To be independent means we can live our own way and make our own decision. We have more freedom. But at the same time, it also means more annoyance. So why just we enjoy this moment.

在我很小的时候,我很羡慕成年人,因为他们可以做任何他们想做的,不必依赖他们的父母。对我来说,我没有钱,我的父母限制我的零花钱,所以我无法花钱去买所有我想要的。似乎成为一个成年人是我唯一的愿望。有一天,我从这部电影中了解到，作为一个成年人也没有我想象中的那么完美。在电影中,那个人努力挣钱来支付他的账单,更重要的是,他不得不远离他的家人。寂寞总是是围绕着他。独立意味着我们可以有自己的方式生活,做自己的决定。我们有的自由。但与此同时,这也意味着的烦恼。所以为什么不享受这一刻呢。 关于独立的高中英语作文篇3

When we talk about being independent, we often think about leaving our parents and living alone. The mental independence is always ignored by people, mental independence means the person can measure the things and make the right decision. As for the children, even they move out and stay far away from their parents, but sometimes they just can’t control themselves, they will get the bad behavior, like smoking and drinking, their life is losing control. The young people need to cultivate their independent spirit, they should think by themselves, learn to take care of the other people, thus they can be the real independent. When a person grows up, they can be strong enough to support their lives and at the same time, they can be mature enough to make their own decision. They can tell what is wrong and what is right.

当我们谈到成为独立，总是想要离开父母，独自居住。精神上的独立总是被人们忽略，精神上的独立意味着一个人能衡量事情，做出正确的决定。对于孩子来说，虽然他们搬出去，远离父母，但是有时候他们无法自控，养成不好的习惯。比如抽烟和喝酒，他们的生活会失控。年轻人需要养成独立精神，他们应该自己思考，学着去照顾别人，这样才能真正的独立。当一个人成长了，他们才能够足够的强大去养活自己，同时，也能够足够成熟去做决定。他们能区分什么是好，什么是坏。

[有关独立的高中英语作文

Luxuriant it gives us boundless endless fun. A long summer vacation to supply the vast reveals itself for the classmates of the stage. And plans to use the summer vacation time, has become our current begin to should do.

One, scientific and reasonable to develop a plan of summer vacation work.

Amount of work in the holiday, want to do the work. To put these job screening, mediation, according to the summer fair time settling, draw up a table "" summer deeds. All the cruel deeds should be carried out in accordance with the "schedule", but still need to be careful mix.

Second, serious review, welcome to scholarship test

This test is after the summer vacation the first put a summary of the semester, summer vacation, want to put the first semester studies the entire contents of the seriously review again, and to formulate a "review schedule. For good measure.

Third, develop my funny hobbies, growth of my specialty.

According to my funny hobby, takes an active part in all kinds of funny Hong shed organized group, such as: painting, calligraphy, music, English, journalism skills, grasp the skills, as to lay a foundation for the growth of the letters patent day.

Fourth, study diligently, careful accumulation, longer than writing, used motor

Manipulation of the heat I visit a few good books as points. Such as: national classics, history allusions, good books and periodicals, fables, fairy tales, etc., progress I browse ability and writing level, edify sentiment.

Else, might as well also active in the summer sports refined, help parents do more housework, experience to meet the social actual deeds... Only seize the opportunity to reveal themselves constantly, expand the line of sight, to be healthy growth.

As is shown by the figure/percentage in the table /picture，____ has been on rise/ decrease， significantly/dramatically rising/decreasing from ____ in _____ to _____ in _____. From the sharp rise/decline in the chart， it goes without saying that _____.

There are at least two good reasons accounting for _____. In one hand， ____.In the other hand， _____ is due to the fact that ______.In addition， ______ is responsible for _____. Maybe there are some other reasons to show ______.But itis generally believed that the above mentioned reasons are commonly convincing.

As far as I am concerned， I hold the point of view that _______. I am sure my opinion is both sound and well-grounded.

Now I want to say something about my dream. What is my dream? I often ask

myself. In my mind, everyone shall have his own dream. I think that having a

dream means that we have an idea, and then we will do all the things to achieve

the target. As long as we have a goal to be realized, we won’t be blind at

least.

My dream is to become a successful doctor, helping those sick people and

saving their lives. Of course, to be a good doctor is very difficult, but I will

do whatever I can do to keep everyone healthy. Thats my dream. I want to try my

best to help the poor sick people of our country. I want to let them have an

opportunity to receive excellent treatments for their illnesses without having

to pay much or just enjoy them free. China is a developing country which needs

good medicine and good doctors, especially in the countryside and distant

villages.

Now I’m a junior student on Grade One, all my classmates and I are working

hard. We all know that the entrance exam of high schools coming in the year of

2009 is a big challenge for us, so we must study harder and harder in order to

go to a good high school. Thus after we finish our senior high school, we are

able to go to a good university. Finally, we can find a good job in society.

My dream is also that although at present I’m good at study, I’ll still try

my best to be the study winner. Now everything I do is close to my dream. I feel

life is fill with hope and is colorful, and I have enough confidence to realize

my dream.

I know that fantasy is something hard to realize, but dream can. I’ll work

hard for my dreams, I’ll never give up.