精选英语作文400字集合7篇

无论是在学校还是在社会中，许多人都写过作文吧，借助作文可以宣泄心中的情感，调节自己的心情。写起作文来就毫无头绪？下面是小编收集整理的英语作文400字7篇，欢迎大家分享。

英语作文400字 篇1

如果我们分析海水的盐度，会发现地区间只有轻微的变化，然而有些小的变化是重要的。 导致海洋的盐度变化的基本过程有三个。

其中之一是通过蒸发的方式即把液态水转化为水蒸气来减少海洋中的水分。这样由于盐留了下来，所以盐度增大。

当然，如果这种方式走向极端，将会余下白色的盐晶体。 与蒸发相反的是降水，如降雨，由此水被加入海中，海水被稀释，从而盐度降低。 这种情形会发生在大量降雨的地区，或江河入海岸处。 因此，盐度通过蒸发减少水分而上升或通过降水或径流增加淡水成分而下降。

一般来说，在阳光很强烈的热带地区，海水的盐度略高于世界上其它没有热带那样多的蒸发的地区。 同理，在江河稀释海水的海岸地带，海水盐度略低于其它海区。

第三个可以变更盐度的过程与海洋中冰的形成和融化有关。 海水冻结时，溶于其中的物质被留了下来。 这样，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盐度。 当然，当冰融化的时候，会降低周围水中的盐度。 在南极洲边缘的威德尔海中，结冰过程增加低温海水的盐度，从而形成了浓度最大的海水。 这些大密度的海水下沉，可以在世界海洋的深水域发现。

英语作文400字 篇2

A Classmates Reunion

I’m a middle school student in Grade 8. Yesterday was Saturday and some of my classmates in primary school had a reunion at our primary teacher’s home. Our teacher taught us for four years and she treated as her own children. We loved her very much. In the afternoon, we just talked and shared our lives in middle school. Happily, most of us have a rich and happy life. Our teacher told us some interesting stories of her new students. After that, we made a big dinner together. Our teacher is a brilliant cook who can make delicious foods. We all ate much. After dinner, we watched TV for a while and then we went home. It was really a good day.

英语作文400字 篇3

这次的新型冠状病毒使多少医务人员在前线没有回家过年，想念他们的亲人，有多少小朋友见不到自己的父母，他们每日每夜的还要冒着生命危险来保护我们，在这次疫情中很多医务人员被传染，长期口罩带着，脸部以坏，看见他们躺在地上那一幕，我也心痛，是你们的.牺牲换来了我们的平安，我相信有了你们我们国家会早日消灭疫情。你们辛苦了！

This novel coronavirus has made many medical workers not go home for the new year at the front line. They miss their relatives, how many children do not see their parents, and they risked their lives every day to protect us. Many medical workers were infected in the epidemic, and the mask was worn and their faces were bad. Your sacrifice brings us peace. I believe that with you, our country will eliminate the epidemic as soon as possible. You've been working hard!

谢谢你们

Thank you

英语作文400字 篇4

Mid-autumn Festival is a popular and important lunar harvest festival celebrated by Chinese people. The festival is held on the 15th day of the eighth month in the Chinese calendar. There are some traditions in this holiday. For example, people would have a big dinner with there families.

After dinner, they often enjoy the full moon which is round and bright. The other tradition of mid-autumn festival is eating moon cake. Moon cake is the essential of that day, which means reunion. As time goes by, there are various kinds of moon cakes, but they are much more expensive than before. I like mid-autumn festival because my families will get together and have a big dinner on that day.

英语作文400字 篇5

I am a student from another place in the country。 I have came back to my hometown recently。 What I saw there made me very surprised and sad。

My hometown was very beautiful in the past。 There use to be many trees everywhere 。 But now the trees on the mountains have been cut off。 And the river turned black。 Fish are not in it any longer。 Sand storms often attack my hometown。 Many people have to leave there。

It is our human being’s fault that the environment has got so bad 。 We’d better to take actions immediately to protect the environment。

英语作文400字 篇6

It was October 12th yesterday. My friends held a birthday party for me. In the morning, they came to my home early, and they brought many presents for me. I liked them very much. I invited them to the KTV, we sang songs, danced and played games. About 5:30 p.m., wewentmy home.

My mother had cooked a delicious dinner for r dinner, we watched TV and at about 8:30 p.m. we ate birthday e were fifteen candles on my birthday cake. I made a silent wish, and then I blew the candles out in one breath. I had an interesting birthday party. We had a good time in the party. I was so grateful to what they did for me.

英语作文400字 篇7

on the new year’s eve, our family gets together, my parents made the big dinner, we ate dinner at about five o’clock, we talked so happily.

after finishing the dinner, my sister and i were so excited, because we planned to see the firework. in my hometown, people can play the firework as they want, people play all kinds of firework every year, it is so beautiful. when the time was about 9 o’clock, i heard the voice, then i looked at the sky, the darkness was lighted up by the firework, i saw many different pictures of firework, all were beautiful. i couldn’t blink my eyes, i was afraid of missing the beautiful moment.

i love firework’s night.