學(xué)英語(yǔ)作文300字9篇(推薦)
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學(xué)英語(yǔ)作文300字 篇1
如果我們分析海水的鹽度，會(huì)發(fā)現(xiàn)地區(qū)間只有輕微的變化，然而有些小的變化是重要的。 導(dǎo)致海洋的鹽度變化的.基本過(guò)程有三個(gè)。
其中之一是通過(guò)蒸發(fā)的方式即把液態(tài)水轉(zhuǎn)化為水蒸氣來(lái)減少海洋中的水分。這樣由于鹽留了下來(lái)，所以鹽度增大。
當(dāng)然，如果這種方式走向極端，將會(huì)余下白色的鹽晶體。 與蒸發(fā)相反的是降水，如降雨，由此水被加入海中，海水被稀釋?zhuān)瑥亩}度降低。 這種情形會(huì)發(fā)生在大量降雨的地區(qū)，或江河入海岸處。 因此，鹽度通過(guò)蒸發(fā)減少水分而上升或通過(guò)降水或徑流增加淡水成分而下降。
一般來(lái)說(shuō)，在陽(yáng)光很強(qiáng)烈的熱帶地區(qū)，海水的鹽度略高于世界上其它沒(méi)有熱帶那樣多的蒸發(fā)的地區(qū)。 同理，在江河稀釋海水的海岸地帶，海水鹽度略低于其它海區(qū)。
第三個(gè)可以變更鹽度的過(guò)程與海洋中冰的形成和融化有關(guān)。 海水凍結(jié)時(shí)，溶于其中的物質(zhì)被留了下來(lái)。 這樣，在新形成的海水冰面的正下方的海水比在冰形成之前有更高的鹽度。 當(dāng)然，當(dāng)冰融化的時(shí)候，會(huì)降低周?chē)械柠}度。 在南極洲邊緣的威德?tīng)柡Ｖ校Y(jié)冰過(guò)程增加低溫海水的鹽度，從而形成了濃度最大的海水。 這些大密度的海水下沉，可以在世界海洋的深水域發(fā)現(xiàn)。
學(xué)英語(yǔ)作文300字 篇2
How to make everybody happy
This is the way I maked all the students happy.
One Monday. Tom and I went to Simon‘s office. Suddenly, I was slipping and fell, because there was some water on the floor.
When I stood up I thought: If I took the mop and dry the floor, nobody would slip and fall. then, I took the mop and dry the floor. Tom also helped me drying the floor.
So I maked all the students happy
如何讓每個(gè)人快樂(lè)
這就是我讓所有學(xué)生開(kāi)心的方式。
一個(gè)星期一。湯姆和我去了西蒙的.辦公室。突然，我滑倒了，因?yàn)榈匕迳嫌幸恍┧?/p>
當(dāng)我站起來(lái)時(shí)，我想：如果我拿起拖把擦干地板，沒(méi)有人會(huì)滑倒。然后，我拿起拖把，擦干地板。湯姆還幫我擦干地板。
所以我讓所有的學(xué)生快樂(lè)
學(xué)英語(yǔ)作文300字 篇3
my school dayMy school day is vey busy .There are 6 classes in a day4 in the morning and 2 in the afternoon.
In the morning i have ChinesemathEnglish and history classI like English and history class very much because they are interesting.but I don't like math class.Becase its very difficult.In the afternoon i have music and PE class.I like PE best.Because its my favorite subject.Its very exciting .
This is my school day.its busy but i fell happy.
學(xué)英語(yǔ)作文300字 篇4
“Every man has his dream!"So,What's my dream,do you know?
I want to be a English teacher.Why do I want to be a English teacher do you know?Because,I like English very much!I can speak English very well!I'm good with English!And I like play with my friend!So I can good with kids.I'm in the school English club.It's very interesting.
So,I really want to be a English teacher!Come on!
“每個(gè)人都有自己的夢(mèng)想!”你知道我的夢(mèng)想嗎?
我想當(dāng)一個(gè)英語(yǔ)老師.你知道我為什么想要當(dāng)英語(yǔ)老師嗎?因?yàn)槲曳浅Ｏ矚g英語(yǔ)!我的.口語(yǔ)很好.我喜歡和朋友一起玩耍!所以我能和同學(xué)們相處的很好.我參加了學(xué)校的英語(yǔ)俱樂(lè)部.那非常有趣.
我真的很想成為一名英語(yǔ)老師!加油!
學(xué)英語(yǔ)作文300字 篇5
The Power of Teamwork
I am the only child in my family, so I get used to doing things by myself. Since I go to school, my teacher always gives us the homework, the problem is that we must finish in a group. At first, I was refused, because I knew I could do it by my own. But my teacher insisted, so I had to work with my group members. I started to find that I got many ideas from my group members and I felt so happy to work with them. Now I realize that teamwork is really good, it not only relieves my pressure, but also brings me happiness. The power of teamwork is infinite.
學(xué)英語(yǔ)作文300字 篇6
fall is the third season of a year . there are three months in fall : july , august and september .
The weather in fall is cool , sometimes it’s windy . i can wear my jackets and jeans . i often fly kites and go hiking with my good friends. and there are many fruits in fall , just like : apples , bananas , oranges… and the mid autuain festival is in fall , too . so i like fall very much .
學(xué)英語(yǔ)作文300字 篇7
When I grw up
When I grw up, I want t be an artist. I want t use clrful pencil t draw this wnderful wrld t everne.
Se ears ag, I did nt nw hw t use the pencil t draw the picture fr ther and father. One da, I fund I culd draw anials, peple, untains, seasns with the clrful pencils with teacher’s help. As a result, I want t be a artist. Even thugh this drea is ver sall, but I still ae effrt. I can stud drawing hardl fr nw n. An then I thin drea will ce true.
When I grw up, I want t be an artist. What abut u? What’s ur drea?
學(xué)英語(yǔ)作文300字 篇8
Winter Vacation
When winter vacation comes, I feel so excited, because it means I will have a month to play with my friends. What's more, the most exciting thing is to spend the New Year with my families. It is the biggest festival for Chinese people and we will prepare it for a long time. I always have good memories about winter vacation.
寒假
寒假即將到來(lái)時(shí)我會(huì)很興奮，因?yàn)檫@意味著我有一個(gè)月的時(shí)間可以朋友們一起玩。而且還可以和家人一起過(guò)新年。這是中國(guó)人民最大的.節(jié)日，我們也為此做了好久的準(zhǔn)備。我對(duì)寒假的記憶總是美好的。
學(xué)英語(yǔ)作文300字 篇9
My best friend is Mary. She lives in a tall building. She lives on the fifth floor.
Everyday she takes the lift up and down. She is twelve years old. She is tall and thin. She has short black hair，two big eyes and a small mouth.
She is very cute. I like playing with her. We are in the same class. I like to read books but she likes playing games. She likes to eat popcorn and ice creams. I like them， too. Her favourite food is fish， so she is clever.
She loves her cat. She often plays with her. The cat likes Mary，too. They are cute.
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