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关于描写小动物英语小作文(汇总20篇)

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关于人与动物的英语作文

全文共 944 字

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Human beings are different from animals in many ways. One of the differences is the ability of human beings to build. It is true that many animals are builders. Birds make nests, and bees make hives. But no animal could build the pyramids or the Great Wall or the Eiffel Tower. The variety, size, and beauty of the structures built by human beings is simply unsurpassed.

Another difference is the ability of human beings to use intelligence. Many animals are probably more clever than we realize, but no animal has the ability to write, to reason, or to speak. Only human beings can invent computers, make use of solar energy. Only human beings paint, draw, compose music, and write poetry.

These are but a few of the differences between human beings and animals. It is our special abilities that give us power to affect the world for the benefit of all mankind. We should be thankful for those abilities and learn to use them in a more wise way.

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更多相似作文

篇1:描写动物作文鹦鹉

全文共 341 字

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动物在我们家都是我的好朋友,今天我先介绍我家爱两面三刀的鹦鹉小皇。

小皇有一身蓝绿相间的羽毛,有一个格外讨人喜欢的小尖嘴,他还有一个坏习惯,如果你不给他喜欢吃的核桃,他绝对不同意你摸他那美丽的羽毛。

不过,他太搞笑了。有一天,我刚买了粘鼠板、小鸟外衣,这是为什么呢?因为让小皇穿上外衣,再让它唱歌,就可以引老鼠出洞了。哼哼我让小皇穿上衣服,小皇穿上了,它似乎很开心,要高歌几首。正当它高歌时,洞里好像有声音说:好好听啊!不过声音太小!小皇被滑倒了!不出我所料,小皇的尾巴粘上了粘鼠板,洞里传来了吱吱的坏笑声,原来是上次那只狡猾的老鼠杰瑞。

你觉得我的好朋友逗不逗呢?

彭垚姐姐评:小作者和好朋友鹦鹉一起斗智斗勇,打算用粘鼠板捉老鼠,没想到狡猾的老鼠杰瑞却让鹦鹉自己给粘上了,这好朋友可真逗!

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篇2:,描写冬天的景色英语作文

全文共 1571 字

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Winter is a clean little girl, she was a silver suitcase came to the earths mothers arms.

Winter carrying a "little flower basket" which is filled with beautiful snow, gently covered the snow covered the earth. A piece of white snowflakes like a elf dancing beautiful dance, like feathers, and like butterflies, fluttering sprinkled in the earths mothers arms. Look, has long been to the trees put on a white clothes, to the earth covered with a thick quilt ... ... afar to a fairy tale like a white world.

The children can not wait to reach out of the small hand to catch the crystal translucent snow, who knows a small snow like a naughty doll in the twinkling of an eye disappeared without a trace, turned into a stain on the clothes wet marks.

Winter also brought us endless fun. Campus get out of class we have a small footprints in the cotton-like snow, and would like to draw a beautiful picture, everyone in this flying snowflakes together to play with snow. And some in the snowball fights, that little snowball flying in the air like a bullet as quickly flew to each other, hit a lot of students clothes. And some in the snowman, they first piled up two big snowballs to do the snowmans body, give the snowman fitted with eyes, mouth ... ... snowman to do a good blow! A gust of wind blowing, the snowman seems to be waving with us smile. Campus suddenly full of laughter, to the cold winter brought a warm color.

This is the beautiful picture drawn in winter, the gift given to us in winter, ah! I love this beautiful winter, more like the winter wizard-like snow.

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篇3::描写秋天的雨英语作文

全文共 1352 字

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What is the rain in the autumn? It is not like a thunder in spring, it is not as heavy rain as the summer, it is not as rain and snow as winter. Then what is it in the end it? Let us go together to reveal the mysterious veil of autumn it!

Autumn is softer. Autumn hit in the face, Rou Si, a cool feeling can not help but arises spontaneously. After the rain, the air fresh, you will never bother it.

The rainbow rhythm, the rhythm of the raindrops beat in the filthy car cover, playing a wonderful symphony, a rain, the car turned to spotless, like a new one. Raindrops hit the window glass, the window glass immediately become clear and bright, "vocal" accompanied by "water painting", beautiful. Irritable time, take a look, cool, and trouble immediately thrown into the clouds. Field, raindrops came to the top of the tent, sit on the "slide" jump down, the dust are taken away.

Autumn is air conditioning. Under a few rain, the temperature immediately down, the air is not so hot. Rain, the temperature immediately cool down, if not rain, the summer tail seems to have refused to go the same.

Autumn is stamps, postal cool, small animals who have to save food, and autumn harvest winter, in order to avoid winter cold and cold forced to be frozen.

Autumn is a magnifying glass, it is useful for people to enlarge things, people are eyeful harvest scene.

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篇4:描写宠物的英语作文

全文共 967 字

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I have a pet dog, her name is Du Du. She is very cute but quite naughty. My father, my mother and me, we all like her very much, and seldom scold her though she sometimes makes a mess at home. However, my mother got really angry with Du Du a few days ago. My mother loves flowers and always brings some home. Last Sunday, she bought some lilies. They were very fragrant. Du Du must have thought that the flowers were delicious, too, so she ate them while my mother was in the kitchen. By the time my mother rushed out of the kitchen, the vase was broken, water was everywhere and the flowers were all gone. My mother was so angry that she didn’t talk to Du Du for the rest of the day and didn’t feed her in the evening.

翻译:我家有只宠物狗,名叫嘟嘟,嘟嘟是个小姑娘,又可爱又淘气,我们全家人都喜欢她,尽管有时她会把家里弄得一团糟,我们也很少责怪她,因为大多数时候,她都是个乖宝宝.可是前两天,她把妈妈惹恼了.妈妈很喜欢花,经常会买些花回来美化我们的家.上星期天,妈妈买了几支

百合花回来,百合花有很好闻的香味,可能我们的小淘气嘟嘟觉得,有好闻香味的东西一定也很美味,所以,趁妈妈不注意,嘟嘟把百合花给吃了.等妈妈从厨房里冲出来时,花瓶倒了,水撒了,花也进了嘟嘟的肚子里了.妈妈气得一整天没理睬嘟嘟,还罚她不能吃晚餐.

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篇5:10:描写小花猫的英语作文

全文共 1986 字

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I have a small flower cat, it grows naive, and always issued a "meow, meow, meow" sound, so I give it the name "small meow".

Small meow head round, chin pointed, ears like a triangle. The big and bright eyes will change. Morning, its pupil is a small dot. At noon, its pupil has become a line. Little meows nose soft, naked, above a little black spot. Its mouth usually closed, yawning, an open, it will reveal two sharp teeth. Its mouth is also long on both sides of a few hard and long beard, who wore a wave of black and white pattern fur. It is a long tail, walking will swing around. You do not see it usually very gentle, when it is angry when the tail to erect, eyes wide open, bowed the body, issued a "meow - woo -" screams, sounds very harsh.

Small meow it loves to eat fish, whenever you see the fish, it will be desperate to get the hand. Once, my grandmother fried a few small fish, small meow saw, saliva immediately flow down. At this time, it looked at me with that delicate and charming eyes, as if to say: "My dear little master, usually you are the best for me, you give me a eat, beg you!" I really But it is not a big pair of big eyes, they gave it a. At this time, it put away the delicate and charming look, in the next to enjoy its lunch.

Small meow it also likes to take a bath, every time it wants to take a bath, always use the soft head touched me. Whenever I take a bath for it, it always makes a mess of it. Suddenly, the little meow becomes like a rich lady.

In addition, the little meow is the most popular wool ball. Every time I take the ball ball to tease it, it will rush to rush to grab, and sometimes I do not give it, it will launch a violent attack to me, this, so I admire the incredible.

Small meow now and I can play well, the thought of it just came to my home when the scene, will not help laughing. Small meow and I from strange to familiar to like, let me filled with emotion.

Now want to come, I play with it time, really my most happy time ah!

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篇6:描写长城的英语作文

全文共 2553 字

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The great wall was renovated from time to time after the qin dynasty. a major renovation started with the founding of the ming dynasty in 1368, and took 200 years to complete. the wall we see today is almost exactly the result of this effort. with a total length of over 6,000 kilometers, it extends to the jiayu pass in gansu province in the west and to the mouth of the yalu river in liaoning province in the east.

What lies north of beijing is but a small section of it.a map of the great wallthe map shows the wall azuoweng from jiayu pass of gansu province to shanhai pass of hebei province. representative sections of the great wall built in ming times are situated near shanhai pass, gubeikou and juyong pass.badaling sectionthe badaling section of the great wall snaking along the mountains northwest of beijing was built at the beginning of the ming dynasty in the 14th century.

Being 7.8 metres high and 5.8 metres wide at the top on the average, it has battle forts at important points, including the corners.located 10 kilometers south of the badaling section of the great wall and built in an 18.5-kilometre-long valley, the pass has always been an important gateway northwest of beijing. the name is believed to have its origin in the workers and slaves conscripted to build the great wall in ancient times. cloud terrace, built in 1345, was originally the base of a pagoda over looking the main road of the town of the pass.

The arched gate of the terrace and the walls inside the arch are decorated with carvings. of elephants, lions, birds, flowers and heavenly kings as well as charms in six languages-sanskrit, tibe tan, phats pa (mongolian), uygur, west xia and han.mutianyu sectionthe mutianyu section of the great wall, 70 kilometers northeast of beijing, is linked to the gubeikou section on the east and the badaling section on the west. it is one of the best sections of the great wall.the mutianyu section of the great wall is crenelatted for watching and shooting at the invading enemy. some of the battle forts on the wall are as close as 50 metres apart.jinshanling sectionlocated in miyun county northeast of beijing, the jinshanling division of the great wall, like the simatai division, belongs to the gubeikou section of the colossal defence barrier.

The battlements in the jinshanling division of the great wall are built along the ridge of a mountain, where the soldiers can resist the invading enemy by taking advantage of the high terrain.a decrepit battle fort at dusk often reminds one of the battles in ancient times.

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篇7:描写动物作文狗

全文共 419 字

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我奶奶家有一条,它长得很可爱。

狗长得很肥,让人感觉每时每刻都在吃似的。它的颜色很白,白得像雪一样,摸起来可舒服了,耳朵瘦瘦的还总是竖着,一点也不累吗?尤其是那让人喜欢的水汪汪的大眼睛,很惹人喜爱。它小小的鼻子可灵敏了,一闻到陌生人气味就叫,还拼命地追逐着。

狗还很贪玩。有一次,我们在午睡,突然,奶奶听到了一阵奇怪的声音,奶奶不放心还是起床出门去看一看。奶奶东张西望没看到有什么人。这时边上菜地里的一个响动引起了奶奶的注意。“呀!这只狗怎么在踩踏我的菜啊”奶奶着急地说。她赶紧把狗抱起来再把狗关到笼子里。哈哈,这就是贪玩的下场。

奶奶家的狗不仅是贪玩还贪吃。暑假的一天,妈妈和奶奶都烧好了菜,其中还有我最喜欢吃的糖醋排骨,我夹起来,可一不小心掉了,美味的糖醋排骨被这只狗给吃了,我刚想去打它,这时,妈妈走了过来说:“哎呀,这里还有那么多,不要太小气了。”我垂头丧气地说:“好吧,这次我就放过你,下次决不放过你。”

这就是奶奶家贪玩还贪吃的狗。

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篇8:描写秋景的英语

全文共 1113 字

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Hot summer finally passed, the yard have been raging with a piece of golden leaves, ah! Autumn came.

It is often said that autumn is the harvest season. There is the first children singing good: "fall to fall to the ground, the crops grow well. Cotton blossoming white, soybean grain full, sorghum red face, rice laughed waist ... ..." colorful autumn Mature breath, filled with the joy of harvest, the fall is generous, selfless, but it is only the industrious man generous selfless, it is the gift of their return.

Autumn, the beautiful season, the harvest season, the golden season, with the flowers in full bloom in the same year as another yearning, with the sun as hot as the summer, with snow and snow as charming as the winter. Autumn sunshine warm and tranquil, autumn breeze warm and gentle, autumn blue sky and white clouds, golden autumn field everywhere golden. Autumn may be hidden in the golden rice, may be hidden in the fire through the persimmon, perhaps hidden in the green rapeseed.

I love the fall, love autumn that unique colorful, vibrant, more love that fall of the harvest and infinite hope.

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篇9:描写哲理的英语

全文共 2097 字

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The significant inscription found on an old key "If I rest, I rust" would be an excellent motto for those who are afflicted with the slightest taint of idleness. Even the most industrious might adopt it with advantage to serve as a reminder that, if one allows his faculties to rest, like the iron in the unused key, they will soon show signs of rust and, ultimately, cannot do the work required of them.

在一把旧钥匙上发现了一则意义深远的铭文——如果我休息,我就会生锈。对于那些懒散而烦恼的人来说,这将是至理名言。甚至最为勤勉的人也以此作为警示:如果一个人有才能而不用,就像废弃钥匙上的铁一样,这些才能就会很快生锈,并最终无法完成安排给自己的工作。

Those who would attain the heights reached and kept by great men must keep their faculties polished by constant use, so that they may unlock the doors of knowledge, the gate that guard the entrances to the professions, to science, art, literature, agriculture --- every department of human endeavor.

有些人想取得伟人所获得并保持的成就,他们就必须不断运用自身才能,以便开启知识的大门,即那些通往人类努力探求的各个领域的大门,这些领域包括各种职业:科学,艺术,文学,农业等。

Industry keeps bright the key that opens the treasury of achievement. If Hugh Miller, after toiling all day in a quarry, had devoted his evenings to rest and recreation, he would never have become a famous geologist. The celebrated mathematician, Edmund Stone, would never have published a mathematical dictionary, never have found the key to science of mathematics, if he had given his spare moments to idleness. Had the little Scotch lad, Ferguson, allowed the busy brain to go to sleep while he tended sheep on the hillside instead of calculating the position of the stars by a string of beads, he would never have become a famous astronomer

勤奋使开启成功宝库的钥匙保持光亮。如果休米勒在采石场劳作一天后,晚上的时光用来休息消遣的话,他就不会成为名垂青史的地质学家。著名数学家爱德蒙斯通如果闲暇时无所事事,就不会出版数学词典,也不会发现开启数学之门的钥匙。如果苏格兰青年弗格森在山坡上放羊时,让他那思维活跃的大脑处于休息状态,而不是借助一串珠子计算星星的位置,他就不会成为著名的天文学家。

Labor vanquishes all --- not inconstant, spasmodic, or ill-directed labor, but faithful, unremitting, daily effort toward a well-directed purpose. Just as truly as eternal vigilance is the price of liberty, so is eternal industry the price of noble and enduring success.

劳动征服一切。这里所指的劳动不是断断续续的,间歇性的或方向偏差的劳动,而是坚定的,不懈的,方向正确的每日劳动。正如要想拥有自由就要时刻保持警惕一样,要想取得伟大的,持久的成功,就必须坚持不懈地努力。

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篇10:描写狗的英语

全文共 437 字

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I have a pet dog named Lucky.It has white and soft furs with two small ears and a long tail.It is given by my aunt as my birthday.It is so friendly and lovely that we all love it very much.It likes playing balls outside so I often take it our for a walk.It also likes to be clean so I wash it and make it clean twice every week.I often feed it with dog food and saussages.It likes one of my best friend.I often play with it after school.

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篇11:描写一天的英语作文

全文共 583 字

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My day is busy.In the morning,I get up at six.I brush my teeth and put on my clothes.Then I eat breakfast at half past six.At six fifteen I go to shool.I get to school at around seven oclock.Classes begin at half past seven.After have two classes,I do sports at nine.And then I play game with my friend.In the afternoon,I eat lunch at twelve oclock.I go shopping in the shop with my sister.School over at ten past four.I go home and get home at around five oclock.At six oclock,I eat dinner.Then I take a shower and do my homework.At nine,I watch TV.I go to bed at around ten oclock.

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篇12:描写鲸鱼的初中英语作文

全文共 599 字

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Whale are huge animals.They live in the sea and eat small fish and other sea life.One intere sting fact is whales can jump high out of water.Some kinds of whales are in danger because humans catch them formeat,fat,and oil,and use whale parts to make candles and soap.Whales are also in danger from water pollution.We should protect whales by making rules on whale protection and by not putting rubbish into the sea.I think people should learn more about whales.

鲸鱼是巨大的动物。他们住在大海和少吃鱼类和其他海洋生物。一个兴趣刺离开水是鲸鱼能跳很高。一些种类的鲸鱼是危险的,因为人类抓注,脂肪,和石油,并利用鲸鱼部分蜡烛和肥皂。从水污染鲸鱼也处于危险之中。我们应该保护鲸鱼,鲸鱼保护规则,不把垃圾放入大海。我认为人们应该了解更多关于鲸鱼。

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篇13:描写丽江英语作文

全文共 803 字

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The old town of Lijiang has a history of more than 800 years and was once a confluence for trade along the old tea horse road.It is famous for its orderly system of waterways and bridges.The old town of Lijiang differs from other ancient Chinese cities in architecture, history and the culture tradition of its local residents-the Naxi people.The town is built along mountains and rivers, providing us a very precious sample of the research on the old-time architecture. The uniquegeographical location, historical background and multiracial inhabitants make it one of the most special old towns.

丽江古城有800多年的历史,曾经是茶马古道(the old tea horse road)上的一个贸易集结点(confluence)。丽江因其有序的水道和桥梁系统而闻名。丽江古城在建筑、历史及其原住民纳西族(the Naxi people)的文化传统方面不同于中国其他古城。古城沿山脉和河流而建,为我们提供了一个研究古代建筑的非常珍贵的样本。独特的地理位置、历史背景以及多民族的居民,都使丽江成为最特别的古城之一。

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篇14:描写动物作文400字

全文共 425 字

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我家有只小猫,它身穿一件洁白的大衣,好像一位绅士。耳朵尖尖的,鼻子圆圆的,大腿粗粗的,尾巴长长的,样子可爱极了。

每天清晨,它就睁开那朦胧的睡眼,喵喵地叫个不停,似乎在抱怨昨晚上没睡好觉,唉!一定又是我们家那些淘气的小老鼠在作祟!你瞧它那懒洋洋的样子,真逗!不过,只要闻到了它最爱吃的鲜鱼的气味,它就立马来了精神,用完晚餐后的它可神气了!连家里的大黄狗见了它都要毕恭毕敬站在一旁,听它差遣,如若不然,它就会使出它的杀手锏-----九阴白骨爪,拼命抓向大黄狗。

不过,淘气归淘气,它要认真起来,是谁也比不过的。每天晚上,它都会尽职地待在老鼠常出没的地方,屏息凝神,非抓住一只祸害不可。有时,它还会和自己的战利品玩玩小游戏,有一次,()我下来喝水,看到它正和一只小老鼠玩,它一会把老鼠放下,一会又用嘴巴死死地咬住,有时又把老鼠扔出去,等老鼠准备逃时它立即又追了上去,弄得老鼠们简直不敢在我们家继续待着了。

哎呀,不好!小猫把我的作业本绣上了梅花了,赶紧瞧瞧……

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篇15:有关动物的英语谚语

全文共 1782 字

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导语:谚语的使用能够使作文语言流畅,生动活泼,处处闪现亮彩。下面是yuwenmi小编为大家整理的优秀英语作文,欢迎阅读与借鉴,谢谢!

1、Fine feathers make fine birds.

人要衣装,马要鞍。

2、Don’t be a dog lying in the manger.

莫学狗占马槽不吃草。不要占着茅坑不拉屎。

3、Scornful dogs will eat dirty puddings.

狗再傲慢也会吃脏布丁。

4、Who will bwll the cat?

谁去给猫系铃?谁愿意为大家冒风险?

5、Too much pudding will choke a dog.

布丁太多噎死狗。

6、Dog does not eat dog.

同类不相残。

7、When the weasel and the cat make a marriage, it is a very ill presage.

黄鼠狼和猫结亲,不是好事情。

8、Dead dogs bite not.

死狗不咬人。

9、There are more ways of killing a cat than by choking it with butter.

杀猫的办法很多。达到目的的途径很多。

10、A crow is never the whiter for washing herself often.

江山易改,本性难移。

11、A gloved cat catches no mice.

戴手套的猫,老鼠抓不到。不愿吃苦的人成不了大事业。

12、The cat shuts its eyes when stealing cream.

帽偷吃奶油的时候总是闭着眼睛。

13、Birds in their little nests agree.

同巢之鸟心儿齐。

14、Every dog is a lion at home.

狗在家门口就成了狮子。

15、It’s an ill bird that fouls own nest.

家丑不可外扬。

16、A cat has nine lives.

猫有九条命;吉人天相。

17、All cats are grey in the dark.

黑暗之中猫都是灰色的。人未出名时看起来都差不多。

18、Each bird loves to hear himself sing.

鸟儿都爱听自己唱。

19、He who would hang his dog gives out first that it is mad.

欲加之罪,何患无词。

20、Kill two birds with one stone.

一箭双雕;一举两得。

21、A bird is known by its note, and a man by his talk.

听音识鸟,闻言识人。

22、The frog in the well knows nothing of the great ocean.

井底之蛙,不知大海。

23、Care kill a cat.

忧虑愁死猫。

24、You cannot catch old birds with chaff.

用粗糠捉不住老鸟。有经验的人难骗。

25、Let sleeping dogs lie.

勿惹事生非。

26、Every dog has his day.

人人皆有得意时。

27、All are not thieves that dogs bark at.

狗见了叫的不一定都是贼。不要以貌取人。

28、Birds of a feather flock together.

物以类聚,人以群分。

29、A staff is quickly found to beat a dog with.

欲加之罪,何患无词。

30、Love me, love my dog.

爱屋及乌。

31、A bird in the hand is worth two in the bush.

双鸟在林不如一鸟在手。

32、Barking dogs don’t seldom bite.

爱叫的狗很少咬人。(.)

33、Don’t count your chickens before they’re hatched.

鸡蛋未孵出,先别数小鸡。不要过早乐观。

34、Cats hide their claws.

知人知面不知心。

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篇16:描写保护环境的初二英语作文

全文共 1329 字

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A sunny Sunday, usually every day and sleep until the sun father-drying bottoms climb to get up early and get up in red, wake up my mother. Drowsily mother slowly said: "Today what the section, from Why so early?" Little Red said excitedly: "Mom, do not install confused, you said that today took me to the park!"

Came to park, mother and son were two beautiful scenery attract: kids, some kite-flying, and some shooting while playing ball ...... red bumper cars, while also playing slippery slides, played with enjoying themselves, was sweating profusely.

Little Red hobbled down to holding mothers hand while walking while singing. Suddenly, a banana peel, a red block of the avenue, little red slip banana skin reminded once again to see if the banana peel to her protest, then do not fight a gas, the foot kicked the banana peel. Mom saw, as if aware of her mind like, and did not criticize her, she just pulled the banana skin side next to her while saying with great earnestness: "I know you have been slipping on banana peel, very angry, but you should From the perspective of others think that if you somehow accidentally stepped on a banana peel how to do? red listened to, very ashamed, the banana peel thrown into the bin.

Little Red looked at the move, my mother smiled.

Yes ah! Would it not everyone should be protected?

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篇17:描写秋天的英语

全文共 928 字

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Fall, in my eyes, is a very beautiful season, is a bumper season. Lets go into the autumn and see the beautiful autumn in my eyes!

Fall to the earth harvest. You see, the apples you fight me grab, painted the red rouge, dress themselves up sober, and so people to pick it; pear head wearing gold clothes, like a noble emperor; Persimmon put on the orange red new clothes that were given to it in autumn, happy to jump again and again, it was very plump; banana took off the green jacket and put on the gold jacket.

You see, that crop is also harvested, that cluster of rice, like a golden field. Autumn is to bring you a cool, bring the earth is a burst of laughter.

Autumn, is a beautiful season, because the autumn brought us a cool, to the earth to bring the harvest of happiness; autumn, like a naughty children, and small partners playing with slapstick.

In my eyes fall is the most perfect, children, your eyes fall is how it?

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篇18:写濒临危机动物的英语作文北极熊

全文共 3755 字

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When the Arctic Ocean freezes over in the autumn, polar bears set off in search of their favorite meals: fatty ringed seals and bearded seals. By the summer, the sea ice begins to melt and break apart. Deprived of access to the tasty seals, polar bears spend the summer fasting. At least, thats whats supposed to happen. As the planet warms, the warmer ice-free season is getting longer and longer. So whats a hungry bear to do?

Scientists once thought that polar bears might survive by supplementing their pinniped diet by turning to terrestrial foods like snow geese, their eggs and caribou.

"Weve had this debate in the literature about whether terrestrial foods are nutritionally relevant to polar bears during the on-land season when the ice has melted."

University of Alberta biologist Nick Pilfold.

"And weve known for a long time, going back to research in the early 70s, even going to back to early explorer logs, that polar bears will consume terrestrial based foods. But the debate was always whether those foods actually add up, energetically." In other words, do these substitutes provide enough nutrition to make up for the lost seals?

To find out, Pilfold and his colleagues estimated the weight lost each day by polar bears in the wilds of western Hudson Bay during the ice-free season, when they could ostensibly be chowing down on terrestrial foods. Then they compared that to the weight lost by bears that are temporarily held in Manitobas Polar Bear Alert Program.

While captive, the bears do not eat. They drop about one kilogram each day. But the wild bears, who had access to the Arctic snack bar, lost the same amount of weight each day. The results are in the journal Physiological and Biochemical Zoology.

"Which is really saying that the terrestrial foods do not have dense enough energy to offset the mass loss. So this idea that bears can just switch from eating sea ice–based food to land food and thats going to help supplement against longer ice-free seasons, that really doesnt show up in the data."

The problem is that polar bears evolved to rely on the marine diet.

"The food on land is protein and carbohydrate based, and the food the polar bears really focus on is fat. Fat is the name of the game for these bears; theyre highly adapted to absorbing that fat into their system and putting it onto their body as body mass, so they can fast on it later on. And the only thing thats going to provide them with that type of fat are marine mammals. And they can only access those marine mammals when theres sea ice."

Adult males can go eight months without food. But younger, sub-adult bears, which are no longer nursing and must hunt, cant last as long without sea ice. So as the Arctic warms, younger polar bears will disproportionately die out. Leaving the species survival in doubt.

北冰洋在秋季结冰以后,北极熊就会出发去寻求它们最喜欢的食物:富含脂肪的海豹和胡子海豹。海冰在夏季开始融化断裂。这使北极熊在夏季无法吃到美味的海豹,所以它们进入禁食期。至少,情况应该是这样。但是由于地球变暖,温暖的无冰季节越来越长。那饥饿的北极熊要怎么办?

科学家曾经认为,北极熊可能会转向陆地上的食物来补充它们对鳍足类动物饮食的需求,进而生存下去,这些陆地食物包括雪雁、雪雁蛋和北美驯鹿。

“文献中有过这类辩论,即在寒冷融化时陆地食物是否能满足北极熊的营养需求。”

尼克·皮尔福德是加拿大阿尔伯塔大学的生物学家。

“通过上世纪70年代初的研究,还有早期的探险者日志,我们很早以前就知道,北极熊会以陆地食物为食。但是辩论的焦点在于,这些食物是否能增加北极熊的能量。”换句话说,这些替代食物能否为北极熊提供足够的营养,弥补不能进食海豹带来的损失?

为了解开这个疑惑,皮尔福德及同事对西哈德逊湾荒野地区的北极熊在无冰季期间每天失掉的体重进行了估算,从表面上看,北极熊在这段时间食用了陆地食物。随后,他们将这一数据与通过马尼托巴北极熊预警计划暂时捕得的北极熊所失掉的体重进行了对比。

在被关期间,北极熊不吃东西。它们的体重每天大约下降1公斤。虽然野生北极熊能享用北极“小吃”,但是它们的体重每天也同样会下降1公斤。这一研究结果发表在《生理学和生化动物学》期刊上。

“显然结果表明,陆地食物不能为北极熊提供足以抵消大量损失的能量。所以,北极熊可以从食用海冰下面的食物转向食用陆地食物,并帮助它们对抗日益延长的无冰季这个观点,并没有在这项数据中得到证明。”

问题是,北极熊进化成了依靠海洋食物的动物。

“陆地食物以蛋白质和碳水化合物为基础,而北极熊需要的食物以脂肪为主。脂肪是这些熊真正需要的东西;它们高度适应的情况是,将脂肪吸收进它们的系统中,然后把这些脂肪放在身上以增加体重,这样它们之后就可以依靠这些脂肪来度过禁食期。唯一能提供给北极熊这种脂肪的就是海洋哺乳动物。但是它们只能在有海冰时食用到这些海洋哺乳动物。”

成年北极熊可以8个月不进食。但是小一些的未成年北极熊已经不再被哺育,它们必须要去猎食,可是它们不能在漫长的无冰季期间一直不进食。所以,随着北极地区变暖,较小的北极熊将会大批死亡。这使这些物种的生存成为问题。

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篇19:描写春天动物的

全文共 791 字

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我家养了两头小白猪.它们全身雪白,一对大耳朵像两把有力的扇子,忽上忽下不停地扇动;鼻子长长的,一对圆圆的鼻孔,像两个小山洞;鼻子下面藏着个大嘴巴,不仔细看,真不会发现鼻子下面还有张嘴;鼻子上面有一双让人捉摸不透的小眼睛,满脸的皱纹,实在不怎么好看.

农忙时,妈妈下地干活,让我在家喂它们.我把猪圈门打开,把调好的食料放在猪圈门口,馋嘴的小猪鼻子尖极了,香味早被它们嗅到了,还没等我把猪食倒在食盆里,它们就一拥而上,把满满的一盆猪食给拱洒了.猪食溅到我脸上、裤腿儿上、褂子上,气得我顺手拿起棍子想揍它们.可刚举起棍子,它们就“嗷嗷”地叫起来,似乎在向我求饶.看着它们那可怜的样子,我又不忍心让棍子落下去了.

小白猪渐渐长大了,更暴露出了它们的本性--贪吃、贪睡.每当妈妈喂它们时,它们便狼吞虎咽,大口大口地吃起来,还不停地发出哼哼声.吃饱了,就挺着滚圆的大肚子,用脚把土扒到身子底下,倒头就呼呼地睡起来.

小猪刚来我家时总惹人生气.或许是因为环境陌生的缘故,它们一次又一次勇敢地翻越猪圈往外跑,可是大门插得死死的,怎么也不能超越第二道防线跑出去.过了一两天,它们也就老实了,找个水窝,用嘴拱啊拱,然后躺在里面,还不停地弄得泥水飞溅,当然小白猪也就变成小泥猪了.家中的人不管它们在院子里如何折腾,只要它们不往外跑,就谢天谢地了.

有时候,它们又让人哭笑不得.一天上午,爸爸要垫猪圈,就把它俩赶到院子里.它俩刚从猪圈里出来,就满院子撒欢儿,吓得几只母鸡满院惊飞,“咯咯”地叫.再看它俩,什么也不顾,好像终于得到自由似的,又好像来到了一个新的世界,一会儿到炭堆里去乱拱,弄得灰头灰脸的,一会儿又拱拱小树、弄弄花草.一上午,整个院子被折腾得不成样子.可能是折腾累了吧,晌午,它们好不容易趴在暖和的地方呼呼睡起了大觉.

我家的小白猪虽然贪吃贪睡又淘气,但我仍然十分喜欢它们,因为它们给我增添了无穷的乐趣.

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篇20:描写一个人的外貌的英语作文

全文共 559 字

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She is medium hight,very slim,her shape is cute,and her skin is as white as snow.She has got long,curly,black hair,her lips red as wine.She has big,bright eyes,when she is smilling,her eyes are shinning.

Her voice is soft,but powerful,thats because she is knowledgeable.Her head is big,I bet theres lots of knowledge in it.

She likes wearing a blue sweater and long,brown skirt.Sometimes she also wears jeans,when she is wearing jeans,she looks pretty cool.

By the way,she never wears glasses,you can see her eye sight is very good.

Well,she is beautiful,isnt it?

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