七年级英语作文书信格式(通用20篇)
阅读电视广告词:“Ifwedon’tsavewater,thelastdropofwaterwillbeatear-drop.”根据提示,写60-80词的短文。本文就是开学吧给大家精心整理的七年级英语作文书信格式优秀作文,欢迎查阅,希望能帮助到您。
浏览
5903作文
114感恩父母的英语书信
全文共 1093 字
+ 加入清单Dear parents:
You are good! Thank you for you when I was growing up, to my care and meticulous care, what I have to ask you can satisfy me. Its always hot in summer, I kick a quilt, every time you gently help me cover the quilt, winter will give me a cup of hot milk before you go to sleep at night.
But your weight to all have no standing in my point of view, only think about how I. Now I have grown up, is not a two year old the child, I want your decision and judgment. Please dont pressure me again, had a lot of pressure on learning, you can put the gas pressure can reduce the?
Although you do not perfect, but what are the parents in the world perfect? Youll always be my favorite people. Is you give me life, let me come to this beautiful world and everywhere is full of love. I must study hard, to repay you.
亲爱的父母:
您们好!谢谢你们在我成长过程中,对我的关心和无微不至的照顾,我有什么要求你们都能满足我。夏天的时候,我总是热的踢被子,你们每次都轻轻的帮我盖好被子,冬天晚上睡觉前都会给我冲一杯热牛奶。
但是你们重来都没有站在我的角度看,只觉得我怎么怎么样。我现在已经长大了,已经不是一两岁的孩子了,我要自己的决定和判断。求求你么不要再压我了,在学习上本来就有很大的压力,你们能把气态的压力减轻吗?
你们虽然不十全十美,可是世界上有哪位父母十全十美的呢?你们永远是我最爱的人。是你们给予我生命,让我来到这个美丽而处处充满爱的世界。我一定要好好努力学习,来回报你们。
更多相似作文
篇1:七年级跨国婚姻的利与弊英语作文
全文共 1089 字
+ 加入清单Interracial marriages can cause many problems within the family. Due to the fact that the couple has a different family background, culture, and custom, and social class level, many disagreements can occur. Religion can be a problem. If the two has a different religion then the other one, there is a problem. Because some religions celebrate certain holidays while others dont. In Christianity, for example, Christians celebrate Christmas while Buddudists dont. Eating habits can also be a problem. One might eat certain food the other dont or dislike. After all, their offspring will encounter problems too. Childrens who are mixed are not likely to be accepted in certain areas in a community. They often have a hard time fitting in. Interracial marriage is not a good idea, but it is still alright to marry someone who is different than you.
跨种族婚姻会导致许多问题在家族内部。因为这对夫妇有一个不同的家庭背景、文化和习俗,和社会类级别,会发生许多分歧。宗教可以是一个问题。如果两个都有不同的宗教,那么另一个,有一个问题。因为一些宗教庆祝某些节日而其他人没有。例如,在基督教,基督教徒庆祝圣诞节而佛教徒不。饮食习惯也会成为一个问题。有人可能会吃一些特定的食物其他不要或不喜欢。毕竟,他们的后代也会遇到问题。儿童谁是混合不太可能被接受某些地区的一个社区。他们常常很难适应。跨种族婚姻并不是一个好主意,但它仍然是好的比你嫁给不同的人。
篇2:英语书信参考
全文共 557 字
+ 加入清单Dear Liu Dong,
Im back at school now. I wish to express my thanks to you for the wonderful vacation I spent with you and your family. During the vacation you taught me how to swim, boat and fish. I really appreciate① your taking time off work to take② me around and show me so many places.
Your mother is such a terrific③ cook! I think I must have gained 10 pounds just in the week I spent with you. Surely Ive spent a happy vacation, which will be remembered for long.
I hope you will be able to visit our school sometime. Thank you again. Lets keep in touch.
篇3:七年级下册英语考试
全文共 1820 字
+ 加入清单In 2003 of SARS, influenza, fever is what a terrible ah, has attracted the attention of a great nation. At that time, very accidentally I also infected with the influenza, sudden fever, and havent been back for three days, the mother began to be nasty, from time to time be caring and attentive.At first, I also see in textile city hospital, then, listen to the doctor said I the illness is likely to be severe acute respiratory syndrome (SARS), call me in the hospital. Under this, my heart felt a qualm, tears streaming down and mother saw a consolation way: "dont be afraid, no matter what disease, the doctor here dont have to be afraid, always medical well."
But to say that finish, mothers eyes are red. Back home, mom and dad said: this light textile city, after all, is a small hospital, not to be trusted. Or else... Show him to the second hospital of shaoxing, where the doctors see more patients, have experienced.
Mother said: "all right, all right, anyway is better than the small hospital." The next day, mom and dad and then take me to the hospital to see. On the taxi, the driver moved speedily sent us to the second hospital outpatient service building, after blood tests to check, the doctor said I this is not in the early period of the severe acute respiratory syndrome (SARS), just call me in the hospital be in hospital, but a few days. I have heard, earnestly to the doctor said I am not in the hospital? The doctor firmly replied: "in the hospital is good for you."
Not much said, father, mother took me to the hospital pay booths.Days in hospital, I was slightly better, just went with dad itself through through the fresh air, go for a walk.Finally, I was released from the hospital and left with me for three weeks, hospital beds, the building of the aunts. Back to his home reunited.
篇4:七年级光盘行动英语作文加翻译
全文共 1896 字
+ 加入清单Dont know when to start, "CD" has been hyped on the network, the meaning of the disc, is have a meal to eat the food not a drop left. Since the "CD" has become social hot words, restaurants around the hotel CD rate is also improved.
Have heard that the air of a food, today, my parents and I go to the great shop, we looked at the menu, one not careful has ordered six vegetables, chicken feet, pork ribs, duck tongue, bass, etc., mother said: "more points." Father said, "know, want to CD, eat packaging." First up is my favorite chicken feet, my saliva all is going to out, quickly learn a chopsticks, thats a little hot and sour taste is spreading at a draught, activate my taste buds. Ribs didnt down the first type, the second set is on the table again, looking at the delicious ribs, put in his mouth, the full-bodied with crisp sweet and sour ribs, so nice, really fun to the fullest. We ate with relish, until didnt anymore. Eat meal, we have packed 2 bowls of food: half of the sea bass and less than half dish Fried meat, the rest are done "CD". Look at the clean plates and the waiter gave me sent a small gift, a teddy bear, ha ha so cute.
Came home in the evening, mother to packaged food to fry, fry the meat with garlic, bass and Fried, "CD" action, leftovers in our do, to eat very clean. CD is a virtue, is also a kind of responsibility, hopes to become our habits, CD discs action, I am very glorious.
不知道什么时候开始,“光盘”成了网络上的热炒词,光盘的含义,就是吃饭吃菜一滴不剩。自从“光盘”成了社会上的热点词语以来,各地饭馆酒店的光盘率也提高了不少。
早就听说朝天店的美食,今天,我和爸爸妈妈一起去朝天店,我们看着菜单,一个不留神就点了六个菜,分别是凤爪、排骨、鸭舌、鲈鱼等,妈妈说:“点多了。”爸爸说:“知道,要光盘,吃不完打包。”第一个上来的是我最喜欢凤爪,我的口水都快要流出来了,马上就一筷子吸取,那有点酸辣的味道一下子弥漫开来,激活我的味蕾。第一只凤爪还没下肚,第二盘排骨又上桌了,看着那色香味俱全的排骨,放在嘴里,那浓郁的酸甜裹着酥脆的排骨,太美味了,真让人爽到极点。我们津津有味地吃着,直到再也吃不下去了。饭吃完,我们共打包了2碗菜:半条鲈鱼和小半碟炒肉,其余也都做到了“光盘”。看着干干净净的盘子,服务员还给我发了小礼品,一个小熊,哈哈 好可爱。
晚上回到家,妈妈把打包来的菜重新炒了一下,炒肉加了点大蒜,鲈鱼又炸了一下,“光盘”行动,剩菜在我们的打理,吃的很干净。光盘是一种美德,也是一种责任,希望光盘能够成为我们的习惯,光盘行动,我很光荣。
篇5:七年级英语作文:My weekends
全文共 552 字
+ 加入清单It was a sunny Sunday,my father and I went on an excursion.We took a bus and walked along the river.Theres really a beautiful place!We walked beneath the deep bule sky and breathed the fresh air.And we climbed up the mountain,admired the beautiful sunlight brighten the land.
At noon,my father and I went to a restaurant which is my favourite and had a good lunch.We were so tired that we aet a lot.After a big meal,we went home by bus.The surroundings were beautiful,but I fell asleep after I got on the bus.Whats pity!
This is a happy and funny Sunday.
篇6:英语书信常见写作模板
全文共 366 字
+ 加入清单1、开头部分
How nice to hear from you again. Let me tell you something about the activity. I’m glad to have received your letter of Apr. 9th. I’m pleased to hear that you’re coming to China for a visit. I’m writing to thank you for your help during my stay in America.
2、结尾部分
With best wishes. I’m looking forward to your reply. I’d appreciate it if you could reply earlier.
篇7:感恩老师的英语书信
全文共 568 字
+ 加入清单Dear Miss Wang:
I am writing to express my sincere gratitude for your help in my study. Without your help , my study would not be the top three in my class. It was you who always standed by me when I am fall. You pointed my mistakes and told me how to make them right. You always worked tirelessly to train my patience.Your continuous encouragement is my greatest motivation.
I sincerely hope that you can have a good health and stay happy. In addition, I wonder if you can pay a lot of attention to your health, get more rest.
Again, I sincerely thank you for your help!
篇8:高中英语书信类作文的万能模板投诉信
全文共 571 字
+ 加入清单示例:
Dear_______,
I am . (自我介绍) I feel bad to trouble you but I am afraid that I have to make a complaint about_______.
The reason for my dissatisfaction is _______(总体介绍). In the first
place,_________(抱怨的第一个方面). In addition,____________(抱怨的第二个方面). Under these circumstances, I find it ___(感觉) to ___________(抱怨的方面给你带来的后果).
I appreciate it very much if you could________(提出建议和请求), preferably __________(进一步的要求), and I would like to have this matter settled by ______(设定解决事情最后期限).Thank you for your consideration and I will be looking forward to your reply.
Yours sincerely
Li Ming
篇9:七年级英语日记加翻译
全文共 1973 字
+ 加入清单This years winter vacation down a 50 years the biggest snow, brought a lot of inconvenience to our life, of course, for me, is also a very happy thing.
Heard that this few days every day heavy snow in the country. Snow when I was a child well, wet shoes at best a bit a nothing important also, big when its bad to did, so pervasive in the clothing, shoes, is the most bad traffic inconvenience. But my heart is already flew to the country, because of the snow is my favorite. I think, I two elder brother home fai home villas behind have a clearing, snow will accumulate a lot of snow, can let me play enough. Moreover, three of my brother because of the holiday, everyone is here, is a good chance.
So, early yesterday morning, I got up early, cry for dad drove to the countryside, think dad dad readily agreed. After more than 20 minutes, we arrived home hui brother home. To meet our Gary is a wry smile, I just got off the bus with lots of bowl big snowball flew. I hide, there are still a few out of me. I open a look, blame not several other brother is also a face smile.
"Well, you look good." My anger rose up at once and ran to knead a snowball, and they spell. His brother also ran to come over to help me. So we both of the two bottom snow battle. After more than 30 minutes, we have a group of victory, Gary they ran into the house. I also ran into the house, to see the adults, they had played a two-button, playing mahjong, is happy! The original come more than I thought of the country.
今年的寒假下了一场五十年来最大的雪,给我们的生活带来了许多不便,当然,对我来说,也是一件很开心的事。
听说乡下这几日天天大雪纷飞。雪小的时候还好,顶多鞋子弄湿一点也没什么,大时就不好办了,衣服、鞋子中真是无孔不入呀,最不好的是交通不便。但我的心却早已飞到了乡下,因为下雪是我最喜欢的。我想,我二哥哥家辉家别墅后面有一块空地,下雪时一定会积很多的雪,可以让我玩个够。而且,我的三个哥哥因为放假,大家都到齐了,是一个好机会。
所以,昨天一早,我就早早起来了,吵着要爸爸开车到乡下去,想不到爸爸爸爽快地答应了。过了20多分钟,我们就到了家辉哥哥家。迎接我们的是一脸坏笑的家辉,我刚一下车就有很多碗大的雪球飞过来了。我东躲西藏,还是有几个还出击中了我。我睁眼一看,怪不其它几个哥哥也是一脸怀笑。
“好,有你们好看。”我怒气一下子升了上来,赶紧跑去捏起了雪球,和他们拼上了。丁丁哥哥也跑了过来帮我。我们就这样两个对两对个干起了雪仗。30多分钟后,我们一组胜利了,家辉他们跑进了屋。我也跑进屋,再去看大人们,他们竟打起了双扣、麻将,正高兴着呢!原来不止我想到乡下来呀。
篇10:七年级英语
全文共 650 字
+ 加入清单Since kindergarten, my father has prepared a desk for me. Its ginger. But
when I get to primary school, I have more and more knowledge to learn.
Gradually, my desk cant put any more learning supplies on it. My grandfather
has changed a big desk for me. At the beginning, I like it very much. But I
forget the good habits I have developed gradually. When I go home, no matter the
table or the small one Dinner table, as long as I dont put anything in it, has
become the place where I do my homework. My mother criticized me many times.
Sometimes I think why Im lazy now. I think Im too relaxed. Later, Ill pick up
my good habits gradually. Ill try my best....
篇11:感恩老师的英语书信
全文共 1038 字
+ 加入清单dear teacher:
this is a special day, we have presented a bouquet of flowers, gifts to the world of your peaches and plums, spectrum a ode to joy, for your eyes flicker disperse tired, for you loosen the amount of wrinkled patterns.
the singing is a blessing: teacher, happy holidays! insatiable in learning, be tireless in teaching, peaches and plums fragrance, their music is happy and harmonious. i wish you a happy holiday! not only in the teachers day today, there is a tomorrow, the day after tomorrow, tai houtian, i wish your life every day, every minutes, every second, the surface is always the same smile.
the singing is concerned about: the teacher, you worked hard! your use of sweat, nurturing the tender shoots of spring have just ground-breaking. your care is like the genial spring, warm our hearts and minds. let us protect your healthy growth, formed in the autumn fruit.
lifes journey, you shine our light of hope, eich our minds, adding to our intelligence.
thank you, teacher! i wish you healthy forever! happy! happiness!
篇12:关于英语作文school七年级
全文共 431 字
+ 加入清单In the morning, we will gather at the plaza and sing the national anthum.
After taking the pledge, we will go back to class where lessons will soon
began.
After a few periods of classes, it’s recess! Recess is the time when we eat
and play and go toilet. It’s the only time inSchoolwhere all students were
enjoying school life. Too bad it’s only half an hour. After recess, we will go
back to class where chucks of lessons start again.
篇13:七年级关于国庆节英语日记
全文共 1550 字
+ 加入清单The National Day, aunt took me to the nantong play in the park.
Along the way, I saw flowers, flowers are varied. There are red, yellow, purple... , let a person see more dazzling. A breeze blowing, the grass in nod, flowers are in the dance. Beautiful.
We in the supermarket to buy something to eat first, and then we went to the park. Entered the park, we saw many animals, have a smart lovely little monkeys, they jumped up and down in the cage, wave to the visitors, I took some biscuits for them, the little monkeys pushing me like bees, with biscuits; That they are a jovian tiger, came over and their ferocious appearance makes people dare not near; With beautiful proud peacock, is to catch up with them when we got there the tail, the colorful feathers opened like handfuls of beautiful sun umbrellas, it is no wonder that the peacock proud. There are many unknown small animals. A long time, and I didnt leave in the aunts urging the zoo.
Then we have to play electric horse, sitting in the boat. Unconsciously by late afternoon, we are reluctant to go home, evening I still had a beautiful dream, dream of my house is a beautiful park.
This is really a happy day!
国庆节到了,阿姨带我去南通公园玩。
一路上,只见花草丛生,花儿们争奇斗艳。有红的、黄的、紫的……,让人看得眼花缭乱。一阵微风吹来,小草们在点头,花儿们在跳舞。美丽极了。
我们先在超市买上一些吃的东西,然后我们到了公园。一进公园,我们就看到了许多动物,有机灵可爱的小猴子,它们在笼子里跳上跳下,对着游人招手,我拿了一点饼干给它们,小猴子们像蜂儿一样挤过来,抢着饼干;有威风凛凛的老虎,它们正大摇大摆地走过来,它们那凶猛的样子使得人们不敢靠近;有美丽骄傲的孔雀,我们到那儿时正赶上它们开屏,那五颜六色的羽毛打开了就像一把把美丽的太阳伞,难怪孔雀要骄傲了。还有许多不知名的小动物。看了很久,我才在阿姨的催促下离开了动物园。
接着我们又去玩了电马,坐了小船。不知不觉到了傍晚,我们恋恋不舍地回家了,晚上我还做了一个美好的梦,梦见我家也开了一个美丽的公园。
这真是愉快的一天啊!
篇14:七年级关于旅游的英语作文travel
全文共 1104 字
+ 加入清单期末考试结束了,终于迎来了盼望已久的假期,终于又可以开开心心地完了。去哪儿玩呢?经过和爸爸妈妈多次沟通,讨论了很长时间,最终决定去北戴河旅游,好好的放松一下。
The final exam is over, finally ushered in the long-awaited vacation, and I can happily. Where to play? After the mother and father several times to communicate, discuss for a long time, finally decided to go to Beidaihe tourism, relax.
爸爸妈妈忙着准备旅游所需的各种物品。我觉得我也应该为旅游做些力所能及的事,于是就加入到爸爸妈妈的行列中来,和爸爸妈妈一起准备旅游所需的各种物品。
The various items of mom and dad busy preparing toTravelrequired. I think I should do some things to do everything in ones power of tourism, and will join the ranks of mom and dad to prepare a variety of items, travel to mom and dad.
真是不准备不知道,一准备吓一跳。没想到,只是出去旅游两三天,就需要准备这么多的东西。如果真要出行一两个月的话,不知道要准备多少东西呀!
What is not ready, ready to jump. Unexpectedly, just go out to travel for two or three days, you need to prepare so many things. If you really want to travel in one or two months, do not know for how many things!
天公真是不作美,当我们旅游所需要的物品准备就绪时,大雨来临了。到底还能不能按原计划去旅游呢?看我们的运气吧!祝我们好运!
God really buzuo Mei, when we travel items needed is ready, come rain. What can not be as originally planned to travel? Our luck! Wish us luck!
篇15:高中英语书信类作文的万能模板祝贺信
全文共 470 字
+ 加入清单Dear ______ ,
①I have learned with delight that you ______(祝贺事由). ②I would like to extend to you my utmost congratulations on ______. ③You must be ______. ④And I feel very happy for you.
⑤ ______(所取得的成绩)is quite exciting news! ⑥I know this is surely owing to ______(被祝贺人过去的努力).⑦It is a reward you richly deserve for your ______(被祝贺人的优点).
⑧Kindly let me know when you ______(咨询对方何时有空).⑨I hope ______(表达自己的愿望). ⑩My best wishes for your further success.
Yours sincerely,
Li Ming
篇16:关于英语作文time七年级
全文共 696 字
+ 加入清单TheTimeof a date has different standard for boys and girls. Girls always
like to be late for about ten minutes while boys always reach the destination on
time. If the girls are earlier than the boys, then the situation will become
awkward, it is not polite to let a girl wait for a boy. But sometimes girls are
always late for more than half an hour, which annoys the boys. It is said that
if you call a girl to ask her if she is on the way, then she will answer you
that she just goes out of the house, the truth is that she is still in the
house. Most girls are late for making up for a long time. It is considerate to
be late for a date for a few minutes, but it is impolite to be late for much
time.
篇17:感恩父母的英语书信
全文共 912 字
+ 加入清单Dear mom:
A: hello!
Mom this is my first time to write to you, so some shame.
How are you recently? Have a smooth work! How your mood these days, I have no dont care you one day.
How much I miss you, do you give me the rice, how delicious, I often dream of in the evening I went to the kitchen to steal to eat the food you do.
Mom you sit down and rest for a while! Dont be so hard to cook for us after work every day, every day we wash clothes... Every time after the meal, I want to help you wash the dishes, you say you dont have to tube chores, you just mind your own learning. Himself out of one eye, I am full of tears.
Ah! Mother I love you.
I wish you the best
Healthy body, the work is smooth.
亲爱的妈妈:
您好!
妈妈这是我第一次给您写信,所以有些羞愧。
您最近身体好吗?工作还顺利吧!这几天您的心情如何,我没有一天不牵挂您。
我是多么想念您,您做给我的饭,是多么好吃,我经常梦到晚上我去厨房偷吃您做的饭菜。
妈妈您坐下来休息一会吧!不要那么辛苦了,每天下班做饭给我们吃,天天给我们洗衣服……每次吃完饭,我要帮你洗碗时,你却说家务事你不用管,你只要管好自己的学习就行。自己却不合一次眼,我热泪盈眶。
啊!妈妈我爱你。
祝你
身体健康,工作顺利。
篇18:感恩老师的英语书信
全文共 1000 字
+ 加入清单dear teacher ,
i am writing to you to express my thanks for your help in learning english and speaking english.
during these days in your class, i have learned much from you and it is very helpful to me. firstly, you let me know what is the west thinking pattern—straight thinking pattern. and, i think, it is very important to understand the west’s thoughts. as you know, this can help me with my examination and interaction with foreigners. secondly, i have got enough confidence in speaking in english from your class and it took me a long time to gain this confidence. now, i always express my ideas in english as possible as i can. it’s great to do that. the last not the least, i find that learning english is not an boring thing as before and i’m interested in studying english which was just a necessary task to pass examinations. reading, listening or speaking all become interesting and i really enjoy it.
above all, i want to say thanks again to you. and thank you for your time.
good luck ^_^
篇19:七年级下册英语考试
全文共 1442 字
+ 加入清单Only the delicious food, know the whereabouts of your soul; Only the delicious food, listen with your heart to tell of the stomach. Have to hurry, how much we missed the pure delicious; Tip of the finger food, the food and love in your pocket. You have your personality, I have my pursuit: pot bag meat.
A week off to just into the house, smell a fragrant delicious cuisine. I am sure that mother gave me a delicious pot bag meat. I follow scent into the kitchen, did not beyond my expectations, mother in doing pot bag meat for me. Saw the delicious pot bag meat, stirs my saliva, slowly began to mean. I hurried back, that I may not let mother found. My mother asked me to write my homework first, and then wash your hands, give me to eat a delicious pot bag meat for a while.
I which have idea to write my homework, my mind only pot bag meat. I wash your hands, take the double I dedicated chopsticks quickly do the table. Soon, my mother brought a plate of golden pot bag meat came in, not mother put the pot bag meat on the table, such as I have already put a piece of into the mouth. Enjoy the pot bag meat delicious, mother see I eat with a smile. I asked my mother: "why dont you eat?" "I ate," mom said. I dont believe, just put a bowl to the mother. Then we together eat it with relish.
Pot bag meat, why are you so good? Let me have a special liking to you. Because the pot bag meat is permeated with mother selfless great love to me.
篇20:七年级下册英语作文:人与自然
全文共 1399 字
+ 加入清单Nature is great, ecology is complicated, life is a mystery, but we know too little, less than "ephemera to heaven and earth, and are one of the sea corn." The earth is rich and colorful, the myriad of object. A blade of grass, a tree, an animal, a group, a person, a family, a nation, a society. Is the result of a natural progress. Natural animal, natural plant, all the plants in the natural, natural all life is useful. Their existence is useful. To think of the mother at the sight of the forest, wood; At the sight of the rivers of power; At the sight of the grassland, to think of red meat and cashmere sweater; To think of at the sight of the animal, can eat, can use, can be used as a medicine.
Cherish the animal is the wealth of society, we must protect. Although some are common, but beneficial to human animals, we should also take care of. Plants but also the friend of human. Plants can help people purify air, reduce noise, keep the soil and water conservation, windbreak and sand-fixation, regulating climate. Really done a lot of contribution for the human.
大自然是伟大的,生态是复杂的,生命是奥妙的,而我们了解得太少了,尚不及“寄蜉蝣于天地,渺沧海之一粟。”地球是丰富多彩,物象万千的。一根草,一棵树,一个动物,一个群体,一个人,一个家庭,一个民族,一个社会。都是自然不断进步的结果。天生的动物,天生的植物,天生所有的植物,天生所有的生命都是有用的。它们的存在就说明有用。一看到森林,就向想到母木材;一看到河流就想到发电;一看到草原,就向想到牛羊肉和羊绒衫;一看到动物,就向想到能不能吃,能不能用,能不能入药。
珍惜动物是社会的财富,我们必须保护。一些虽很常见,但对人类有益的动物,我们同样应该爱护。植物也是人类的朋友。植物能够帮助人们净化空气,减少噪音,保持水土,防风固沙,调节气候。真是为人类做了不少贡献。