万能英语作文开头结尾大全高中【精品20篇】

If I were a boy again, I would practice perseverance more often, and never give up a thing because it was or inconvenient. if we want light, we must conquer darkness. perseverance can sometimes equal genius in its results. “there are only two creatures,” says a proverb, “who can surmount the pyramids—the eagle and the snail.”

if i were a boy again, I would school myself into a habit of attention; i would let nothing come between me and the subject in hand. i would remember that a good skater never tries to skate in two directions at once.the habit of attention becomes part of our life, if we begin early enough. i often hear grown up people say “ i could not fix my attention on the sermon or book, although I wished to do so” , and the reason is, the habit was not formed in youth.

if I were to live my life over again, I would pay more attention to the cultivation of the memory. I would strengthen that faculty by every possible means, and on every possible occasion. it takes a little hard work at first to remember things accurately; but memory soon helps itself, and gives very little trouble. it only needs early cultivation to become a power.

Girls at a training course offered by the "Care for Girls" program in

Qingjian county, Shaanxi province, talked about their pursuit of dreams despite

living in unfavorable conditions.

Initiated by the National Health and Family Planning commission in 2013,

the program helps girls in underdeveloped regions to build their self-esteem and

self-confidence.

"I want to be a teacher teaching Chinese because I like Chinese and

writing," Xi said. "By teaching I can not only share knowledge with my students,

but also keep learning new things from new versions of textbooks."

She is living with her mother in a room that has no bathroom and costs 300

yuan ($48) a month to rent. Merit certificates she received from school are

displayed on the wall. Yan Lingling, Xis mother, said she is proud of her

daughter.

According to the family planning policy, couples in which both the husband

and wife have rural residential permits can have another child if their first is

a daughter. Yan said she isnt planning on adding to the family because she

wants to give her daughter the best she has.

"My husband is away most of the time, working in construction sites and

making no more than 30,000 yuan ($4,840) a year. I work as an hourly worker

sometimes. The rent of our apartment is expensive. One more child means one more

burden," Yan said.

Speaking about how she plans to achieve her dream of becoming a teacher, Xi

said: "I will not give up on my dream easily, though I know it may be difficult.

When something becomes difficult, it only makes me want to try harder."

这类作文时，注意以下几点：

审题时，除了要把握好图表的表层信息外， 还要分析图标的深层含义，如原因、根源、可能的发展趋势等。图表中所提供的说明文字往往是问题的切入点，一定要仔细分析。

描述数据时要抓住重点，为中心服务，不必面面俱到，切忌毫无目的地罗列图表中的数据。如果数据较多，抓住图表中的极端点(如最大或最小、最多或最少，最好或最差)和基本相同进行描述。

主题句应明确，最好放在文章的开头，这样会使重点突出，主题明了。

Last May 4th was my birthday.I had a party at my home.

My relatives and friends came to my home in the evening.And I got a lot of presents from them.My mother prepared a big birthday cake for me.

There are even candles on it.After singing the song “Happy birthday”，I shared the cake with my friend and relatives.Then we watched TV and listened to music.Same of the girls danced with the music.We had a good time that day.

Now I want to say “Thank you my friends.Thank you my parents！I ’m so happy！”

When I went to middle school, it was hard for me to adjust the new

environment at first, because there were so many subjects to learn, I fell

behind other students. I did not know what to do, I just wanted to get away from

school. I talked about my annoyance to my friend, she told me that I got too

much pressure and she suggested me to take relax and made progress step by step.

She said everything would be better someday. Now I have made progress and when I

look back on the passed days, it was just a small problem for me. I got over the

hard moment and become a strong person.

导语：春节算是中国最热闹的节日，春节那段时间到处都洋溢着热闹幸福的气氛，下面是小编为大家整理的优秀英语作文，欢迎阅读与鉴赏，谢谢。

Spring Festival is the most important festival in China .It‘s to celebrate the lunar calendar ’s new year .In the evening before the Spring Festival ，families get together and have a big meal .In many places people like to set off firecrackers .Dumplings are the most traditional food .Children like the festival very much ，because they can have delicious food and wear new clothes .They can also get some money from their parents. This money is given to children for good luck . People put New Year scrolls on the wall for good fortune .

The Spring Festival lasts about 15 days long .People visit relatives and friends with the words “Have all your wishes ”。 People enjoy the Spring Festival ，during this time they can have a good rest .

Many traditional arts are losing nowadays, because some of them have been replaced by the new machines and the scientific products.

I feel so sorry about the losing arts, in my opinion, they are so classic and their charm will never fade away.

Take my grandma for example. She is good at paper-cut which was inherited from her mother.

But when comes to my mother’s generation, paper-cut seems to be kicked out, there are less people need it, so my mother doesn’t learn this skill. The paper-cut art is losing in my family. When I found my grandma had this skill, I was so surprised and curious about it. I asked my grandma to teach me this skill. During the process, I found this art was so great, I was attracted by it. Some traditional arts like paper-cup should be kept.

如今很多传统艺术正在消失,因为一些传统已经被新的机器和科学的产品所替代。对于正在消失的艺术，我感到抱歉,在我看来,他们是如此经典和有魅力,将永远不会消失。以我奶奶为例。

她擅长剪纸，继承了她母亲。

但是当到我母亲这一代,剪纸似乎被淘汰了,越来越少的人需要它,所以我的母亲不学习这个技能。

剪纸艺术在我家中逐渐失去。当我发现我奶奶有这个技能的时候,我是如此的惊讶和好奇。我叫奶奶教我这个技能。在这个过程中,我发现这门艺术是如此之大,我被它吸引住了。一些传统艺术像剪纸应该被保持。

[高中英语作文：剪纸艺术

Everyone admires beauty. Everyone has his own standard about beauty.

Nowadays some people tend to think that they own beauty if they have a good

looking. They are not satisfied with their appearance. They spend much money

taking a kind of operation. Can beauty really be man-made? If so， everybody can

get beauty. As a result， there is no beauty at all.

The appearance is given by our parents and is unique in the world. Everyone

should value it. Id rather prefer nature as the standard of beauty. Just accept

yourself， accept everything the god gives to you， and create the beautiful life

belong to you.

Many heroes dont have beautiful surface. However， their beautiful images

often come to our minds. Their beauty comes from their contributions to the

society.

Dont be eager to judge whether a person is beautiful or not without a

thorough understanding of him. A beautiful person is not the one with a good

looking， but with a broad and kind heart.

Good looking is pleasant while spiritual beauty is more important. As an

old saying goes， “ Virtue is fairer than beauty. ” If you have a kind heart， you

own real beauty.

导语：英语作文经常要我们介绍同一个地方，下面是yuwenmi小编为还在备考的同学整理的优秀英语素材，欢迎阅读与借鉴，谢谢!

一、“地址”的表达

(一)表示“在某村”：in + the village of + 村名。如：

In the village of Huaxi在华西村

(二)表示“在某县”：in + 县名 + county。

In Lingtai county 在灵台县

(三)表示“在某市”：in the city of + 市名。

In the city of Beijing 在北京市

(四)表示“在某省”：① in + 省名+province。② in the province of +省名。如：in Shanxi Province 在陕西省

(五)表示“在门牌号，街道”：at +门牌号(基数词) + 街道名+ (Street/Road)。如：at 1203 Washington Street在华盛顿大街1203号

at 88 Pingliang Road 在平凉路88号

(六)综合表达是：at +门牌号+ 街道名+ Street, in the city/village of +村名/市名, in +县名 + county, in the province of +省名。

【注意】①英语表示地址是从小地名开始，逐步到大地名。②如地名过多，可多用几个表示地点的介词，不要多用表示领属关系的介词of。③ 除门牌号用介词at, 其他均用介词in。

One day, Doras mother gave her a coin, It was a bit dirty, so Dora washed it. Then it started talking to Dora.

Today I talked to a coin, When it was made, it was nice and clean. People took the coin to a bank. It stayed there for a few days. A person at the bank gave the bank gave the coin to a man. My mother went to buy some cake from the mans shop. The man gave the coin to her as part of her change. She dropped the coin. A street cleaner saw it and picked it up. He returned it to my mother. She gave it to me as pocket money. I washed the coin to make it clean again.

一天，多拉的母亲给了她一枚硬币。它有点儿脏，所以多拉把它洗了洗。听听这个硬币的英语故事。

今天我和一枚硬币谈话了，当它被铸造的时候，它很好看而且干净.人们把钱存到银行。它在那儿待几天.银行的人把这枚硬币给了一名男子。我的母亲从这名男子的商店里买一些蛋糕。这名男子将这枚硬币作为零钱的一部分找给她。她掉了这枚硬币。一位街道清洁工看到了并把它捡起来。他把她还给了我母亲。母亲把它当零花钱给我了，我洗了这枚硬币，让它再次变干净。

every one has a dream. i have a dream, too. i have a dream that one day i could become a math teacher.

i love math very much, because i think math is quite useful. its useful when people are buying things. its useful when students are learning subjects like physics and chemitry. and its useful when scientists are doing experiments. teachers can not only help students to learn things but also teach the students to apply what they learn into practice.

therefore, i hope to be a math teacher in the future. i want to help more students learn math.

Nowadays, there is a widespread concern over (the issue that)___作文题目______. In fact, there are both advantages and disadvantages in __题目议题_____. Generally speaking, it is widely believed there are several positive aspects as follows. Firstly, ___优点一______. And secondly ___优点二_____.

Just As a popular saying goes, "every coin has two sides", __讨论议题______ is no exception, and in another word, it still has negative aspects. To begin with, ___缺点一______. In addition, ____缺点二______.

To sum up, we should try to bring the advantages of __讨论议题____ into full play, and reduce the disadvantages to the minimum at the same time. In that case, we will definitely make a better use of the ____讨论议题___.

下面是语文迷网小编为大家整理的中考英语作文万能句型，欢迎大家阅读参考。

一、开头句型选择

1. 关于……人们有不同的观点。一些人认为……

There are different opinions among people as to ____ 。Some people suggest that____。

2. 俗话说(常言道)……，它是我们前辈的经历，但是，即使在今天，它在许多场合仍然适用。

There is an old saying______。 Its the experience of our forefathers，however，it is correct in many cases even today.

3.现在，……，它们给我们的日常生活带来了许多危害。首先，……;其次，……。更为糟糕的是……。

Today， ____， which have brought a lot of harms in our daily life. First， ____ Second，____。 What makes things worse is that______。

4.现在，……很普遍，许多人喜欢……，因为……，另外(而且)……。

Nowadays，it is common to ______。 Many people like ______because ______。 Besides，______。

5.任何事物都是有两面性，……也不例外。它既有有利的一面，也有不利的一面。

Everything has two sides and ______is not an exception，it has both advantages and disadvantages.

6.关于……人们的观点各不相同，一些人认为(说)……，在他们看来，……

People’s opinions about ______ vary from person to person.Some people say that ______。To them，_____。

7.人类正面临着一个严重的问题……，这个问题变得越来越严重。

Man is now facing a big problem ______which is becoming more and more serious.

8.……已成为人的关注的热门话题，特别是在年青人当中，将引发激烈的辩论。

______ has become a hot topic among people，especially among the young and heated debates are right on their way.

9.……在我们的日常生活中起着越来越重要的作用，它给我们带来了许多好处，但同时也引发一些严重的问题。

______ has been playing an increasingly important role in our day-to-day life.it has brought us a lot of benefits but has created some serious problems as well.

10.根据图表/数字/统计数字/表格中的百分比/图表/条形图/成形图可以看出……。很显然……，但是为什么呢?

According to thefigure/number/statistics/percentages in the /chart/bar graph/line/graph，it can be seen that______while. Obviously，______，but why?

11、Recently， the problem of … has aroused people’s concern.

最近，…问题已引起人们的关注。

12、Internet has been playing an increasingly important role in our day-to-day life. It has brought a lot of benefits but has created some serious problems as well.

互联网已在我们的生活中扮演着越来越重要的角色。它给我们带来了许多好处，但也产生了一些严重的问题。

13、Nowadays，(overpopulation) has become a problem we have to face.

如今，(人口过剩)已成为我们不得不面对的问题了。

14、With the development of science and technology， more and more people believe that…

随着科技的发展，越来越多的人认为…

二、结尾句型

1、Taking all these factors into consideration， we naturally come to the conclusion that…

把所有这些因素加以考虑，我们自然会得出结论…

2、Taking into account all these factors， we may reasonably come to the conclusion that…

考虑所有这些因素，我们可能会得出合理的结论…

3、Hence/Therefore， we’d better come to the conclusion that…

因此，我们最好得出这样的结论…

4、There is no doubt that (job-hopping) has its drawbacks as well as merits.

毫无疑问，跳槽有优点也有缺点。

5、All in all， we cannot live without… But at the same time we must try to find out new ways to cope with the problems that would arise.

总之，我们没有…是无法生活的。但同时，我们必须寻求新的解决办法来对付可能出现的新问题。

6、It is high time that we put an end to the (trend)。

该是我们停止这一趋势的时候了。

7、It is time to take the advice of … and to put special emphasis on the improvement of …

该是采纳…的建议，并对…的进展给予特殊重视的时候了。

8、不用说…… It goes without saying that = It is obvious that …

例：不用说早睡早起是值得的。It goes without saying that it pays to keep early hours.

9、……是必要的 It is necessary (for sb.) to do / that … ……

是重要的 It is important(for sb.) to do / that … ……

是适当的 It is proper (for sb.) to do / that … ……

是紧急的 It is urgent (for sb.) to do / that …

例：It is proper for us to keep the public places clean.

It is proper that we (should)keep the public places clean. 我们应当保持公共场所清洁。

My mother is a teacher, so she pays special attention to my education. Before I went to primary school, she bought me a lot of novel books. I remembered that when the hot movie Harry Porter came out, she bought me the novel the other day. I was so surprised and read these books quickly. Thanks to my mother, she cultivated my interest to read successfully. I keep reading books every day, even though I was busy with my homework, I would take out the books to read some chapters before I went to sleep. Reading these books helps me a lot. I am good at writing and it broadens my vision. I can give my own opinion and other students admire me. Now I start to read the classic novel. Reading makes me happy and find my world.

我妈妈是一名教师，所以她特别重视对我的教育。在我上小学之前，她给我买了很多小说。我记得，当热门电影《哈里波特》出来的时候，第二天她就给我买了这本小说。我很惊讶，同时也很快看完了。感谢我的妈妈，她成功地培养了我对阅读的兴趣。我坚持每天读书的习惯，即使作业任务很繁重，我都会在睡觉之前拿书出来看一会。看这些书给我的帮助很大。我擅长写作，而且视野也拓宽了。我可以给出自己的见解，其他同学也佩服我。现在我开始看古典小说，阅读使我快乐，我找到了属于自己的世界。

[良好的阅读习惯高中英语作文

一、优化词汇输入教学，丰富词汇知识积累

词汇是一篇文章最基本的组 成要素。头脑中如果没有一定数量的、且处于鲜活状态的词汇，就无法写出好文章。要写出好的文章，就必须善于从众多的词语中选择和运用最恰当的词语。因此， 加强词汇教学、扩大和丰富学生的词汇量是提高学生写作能力的基础工作。克拉申的“语言输入假说模式”认为：正确和恰当的语言输入将会使语言学习的效果更 佳。

最佳语言输入的两个必要条件：

1)密切相关的

2)大量的。因此，将密切相关的常用词汇、习惯搭配适当集中教学，反复归纳、不断循环和强化是较好的词 汇输入方法，同时也保证了常用词汇在头脑中的鲜活状态，为写作输出提供可靠保障。

二、加强基础写作训练，活化基础知识积累

在学生写作过程中，我们 常常会发现许多学生的词汇量与运用能力不成正比的现象，写作中经常出现词汇贫乏和用词不当等问题。这种问题的出现实际上是学生获得的知识没有有效的活化。 配合词汇和句型教学，教师可以经常以所教学词汇为关键词拟定一些与时事或生活相关的话题，让学生用词、句做翻译练习，一段时间(4-5天)之后，再让学生 用这些词、句进行写作，多写多练以达到活化知识的目的。

三、广泛阅读，拓展知识积累

“熟读唐诗三百首，不会作 诗也会吟”。在大量的阅读过程中，可使学生开拓视野，拓展知识，增加语感，为写作提供必要的语言材料。写作和阅读是互相促进、相辅相成的。有些词汇和句 型，学生只是似曾相识，通过广泛的阅读能促使学生把这些东西运用得更熟练，表达得更准确。反过来，这也会有效地提高学生的阅读理解能力。

When I go to high school, our school has the rule to ask students to live

in the dormitory. Most students live with their parents before, so we all feel

excited and afraid of the group life. Luckily, I have three nice roommates. Soon

we become close friends. Living with others, we learn to do the house work, such

as everyone needs take turn to clean the floor, when we have something good to

eat, we will share with each other. The group life makes us have less private

space, but we enjoy the moment when we have the little talk before sleep, the

secrets that we dont want our parents know can talk to these girls. Whats

more, I become much independent. I learn to take care of myself and have really

grown up.

Dear Tim,

With Spring Festival drawing near, I’d like to invite you to my home to experience the festival.

When you come, we can enjoy traditional Chinese food together, and then put up Spring Festival couplets. As a traditional custom, the couplets are always posted on the door of a house. Written on red paper, a couplet is composed of two lines of poetry, which rhyme with each other. Not only do the couplets add some joyous atmosphere to the festival, but also they express people’s wishes for a better life.

I would appreciate it if you could accept my invitation. Looking forward to your coming.

Yours,

Li Hua

good morning/good afternoon teachers,

My name is...I am from ....primary school and I am ..years old now. I have a lot of interests and hobbies. For example, I like reading and swimming very much.

I think ... middle school is the perfect choice for me and I really wish to study in this school.

it was the first day of our summer holiday.all of us were very happy. why? because we have two months to do things we love to do.we are free.although we have some homework.but we can finish them in several days.and the rest time we can make good use of.my god! we have been very tired after hard studying.in summer holidays,i want to have full sleep and eat good food in order to replenish myself. last but not the least,i will have a good rest.

这是我们暑假的第一天，我们都很高兴。为什么？因为我们有两个月的时间去做我们喜欢做的事情了。我们自由了。尽管我们有很多家庭作业。但是我们几天就可以完成，剩余的时间我们可以自由支配.上帝啊，在努力的学习之后我们很累。在暑假，我想睡好吃好为了放松我自己。最后，我将可以好好休息。

[高中生暑假英语日记

下面是语文迷网小编为大家带来的五类英语作文万能公式，希望对你有帮助。

一、实用性写作(申请信 )

Your address

Month, Date, year

Receivers address

Dear ...,

I am extremely pleased to hear from you./ to see your advertisement for the position in .... And I would like to write a letter to tell you that.../ I am confident that I am suitable for the kind of the job you are advertising.

.../ I feel I am competent to meet the requirements you have listed. On the one hand, .... On the other hand, .... I am enclosing my resume for your kind consideration and reference.

I shall be much obliged if you will offer me a precious opportunity to an interview. I will greatly appreciate a response from you at your earliest convenience/ I am looking forward to your replies at your earliest convenience.

Best regards for your health and success.

Sincerely yours,

X X X

二、阐述主题题型

要求从一句话或一个主题出发，按照提纲的要求进行论述.

1. 阐述名言或主题所蕴涵的意义.

2. 分析并举例使其更充实.

The good old proverb ----------------(名言或谚语)reminds us that ----------------(释义). Indeed, we can learn many things form it.

First of all,-----------------(理由一). For example, -------------------(举例说明). Secondly,----------------(理由二). Another case is that ---------------(举例说明). Furthermore , ------------------(理由三).

In my opinion, ----------------(我的观点). In short, whatever you do, please remember the say------A. If you understand it and apply it to your study or work, you”ll necessarily benefit a lot from it.

三、解决方法题型

要求考生列举出解决问题的多种途径

1. 问题现状

2. 怎样解决(解决方案的优缺点)

In recent days, we have to face I problem-----A, which is becoming more and more serious. First, ------------(说明A的现状).Second, ---------------(举例进一步说明现状)

Confronted with A, we should take a series of effective measures to cope with the situation. For one thing, ---------------(解决方法一). For another -------------(解决方法二). Finally, --------------(解决方法三).

Personally, I believe that -------------(我的解决方法). Consequently, I’m confident that a bright future is awaiting us because --------------(带来的好处).

四、说明利弊题型

这种题型往往要求先说明一下现状，再对比事物本身的利弊，有时也会单从一个角度(利或弊)出发，最后往往要求考生表明自己的态度(或对事物前景提出预测)

1. 说明事物现状

2. 事物本身的优缺点(或一方面)

3. 你对现状(或前景)的看法

Nowadays many people prefer A because it has a significant role in our daily life. Generally, its advantages can be seen as follows. First ----------------(A的优点之一). Besides -------------------(A的优点之二).

But every coin has two sides. The negative aspects are also apparent. One of the important disadvantages is that ----------------(A的第一个缺点).To make matters worse,------------------(A的第二个缺点).

Through the above analysis, I believe that the positive aspects overweigh the negative ones. Therefore, I would like to ---------------(我的看法).

(From the comparison between these positive and negative effects of A, we should take it reasonably and do it according to the circumstances we are in. Only by this way, ---------------(对前景的预测).)

五、议论文的框架

(1) 不同观点列举型(选择型)

There is a widespread concern over the issue that __作文题目_____. But it is well known that the opinion concerning this hot topic varies from person to person. A majority of people think that _ 观点一________. In their views there are 2 factors contributing to this attitude as follows: in the first place, ___原因一_______.Furthermore, in the second place, ___原因二_____. So it goes without saying that ___观点一_____.

People,however,differintheiropinionsonthismatter.Somepeoplehold the idea that ___观点二_______. In their point of view, on the one hand， ___原因一_______. On the other hand, ____原因二_____. Therefore, thereis nodoubtthat ___观点二______.

As far as I am concerned, Ifirmlysupporttheviewthat __观点一或二______.Itis not only because ________, but also because _________. The more _______, the more ________.

(2)利弊型的议论文

Nowadays, there is a widespread concern over (the issue that)___作文题目______. In fact, there are both advantages and disadvantages in __题目议题_____. Generally speaking, it is widely believed there are several positive aspects as follows. Firstly, ___优点一______. And secondly ___优点二_____.

Just As a popular saying goes, "every coin has two sides", __讨论议题______ is no exception, and in another word, it still has negative aspects. To begin with, ___缺点一______. In addition, ____缺点二______.

To sum up, we should try to bring the advantages of __讨论议题____ into full play, and reduce the disadvantages to the minimum at the same time. In that case, we will definitely make a better use of the ____讨论议题___.

( 3 ) 答题性议论文

Currently, there is a widespread concern over (the issue that)__作文题目_______ .It is really an important concern to every one of us. As a result, we must spare no efforts to take some measures to solve this problem.

As we know that there are many steps which can be taken to undo this problem. First of all, __途径一______. In addition, another way contributing to success of the solving problem is ___途径二_____.

Above all, to solve the problem of ___作文题目______, we should find a number of various ways. But as far as I am concerned, I would prefer to solve the problem in this way, that is to say, ____方法_____.

( 4 ) 谚语警句性议论文

It is well know to us that the proverb: " ___谚语_______" has a profound significance and value not only in our job but also in our study. It means ____谚语的含义_______. The saying can be illustrated through a series of examples as follows. ( also theoretically )

A case in point is ___例子一______. Therefore, it is goes without saying that it is of great of importance to practice the proverb ____谚语_____.

With the rapid development of science and technology in China, an increasing number of people come to realize that it is also of practical use to stick to the saying: ____谚语_____. The more we are aware of the significance of this famous saying, the more benefits we will get in our daily study and job..

When my friends ask me to take pictures of them, they will take a lot of pictures and then only keep a few of them.

Because they are not satisfied with most pictures, they think they are not perfect.

Actually, when I look at the pictures, there is nothing serious in my eyes, everyone in the pictures look as they are.

People chase for the perfect side, that’s why more and more people choose to have the plastic surgery.

Take the celebrities for example, they look beautiful enough, but to make themselves look perfect, most of them take the plastic surgery, which makes them look unnatural. People have to cost the great price for chasing the perfect side, while no one is perfect.

If we accept our imperfect side, we will live in the easy way and can enjoy the life.

当我的朋友们叫我帮拍照的时候，他们会拍很多照片，然而只有少部分照片能保存下来。因为他们不满意大部分的照片，觉得自己看起来不完美。实际上，当我看到照片的时候，在我看来没有什么大问题，照片中的每个人看起来都像他们自己的样子。人们追求完美的一面，这也是为什么越来越多的人选择去进行整容手术。就拿名人来说，他们看起来足够漂亮，但是为了让自己看起来完美，大部分人进行了整容手术，这让他们看起来不自然。为了追求完美，人们不得不付出很大的代价，然而没有人是完美的。如果我们接受自己不完美的方面，那么我们就会过得轻松点，享受好生活。

[高中英语作文：接纳不完美的一面