在學習、工作或生活中，許多人都寫過作文吧，根據寫作命題的特點，作文可以分為命題作文和非命題作文。你所見過的作文是什麼樣的呢？下面是小編為大家整理的大學英語作文300字5篇，希望對大家有所幫助。
july 20th 1969 was an important day for the human american astronauts landed on the moon. it was the first time for man to be on the moon. as soon as they got there, they put a television camera on the moon in order to let the people on the earth watch them on tv at home. before they left the moon, they collected some moon rocks and brought them back to the earth. a new age of eploration began.
大學英語作文300字 篇2Friends play an important part in everyone’s life.
Some people make friends for their own benefits.
A friend in need is a friend in deed.
1)Friends influence your development, maturity and sense of responsibility.
2)These people are not reallyfriends. They only want to be your friends if it
is to their advantage. By this time you should know who are your true friends.
3)A true friend is eager to help you whenever necessary. You can consider yourself very lucky if you have one true friend. You and your true friend have a good understanding of each other
大學英語作文300字 篇3Campus love
Nowadays, campus love is popular. Some college teachers argue that students should give up love for the sake of learning. They maintain that love is time consuming and influences one's learning. Some students, however, hold that a student who falls in love will study harder and will make greater progress. They don't believe that a person in love lags behind in his studies. Please write an essay of no less than 150 words and talk about your views on campus love.
大學英語作文300字 篇4如果我們分析海水的鹽度，會發現地區間只有輕微的變化，然而有些小的變化是重要的。 導致海洋的鹽度變化的基本過程有三個。
其中之一是通過蒸發的方式即把液態水轉化為水蒸氣來減少海洋中的水分。這樣由於鹽留了下來，所以鹽度增大。
當然，如果這種方式走向極端，將會餘下白色的鹽晶體。 與蒸發相反的是降水，如降雨，由此水被加入海中，海水被稀釋，從而鹽度降低。 這種情形會發生在大量降雨的地區，或江河入海岸處。 因此，鹽度通過蒸發減少水分而上升或通過降水或徑流增加淡水成分而下降。
一般來說，在陽光很強烈的熱帶地區，海水的鹽度略高於世界上其它沒有熱帶那樣多的蒸發的地區。 同理，在江河稀釋海水的海岸地帶，海水鹽度略低於其它海區。
第三個可以變更鹽度的過程與海洋中冰的形成和融化有關。 海水凍結時，溶於其中的'物質被留了下來。 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。 當然，當冰融化的時候，會降低周圍水中的鹽度。 在南極洲邊緣的威德爾海中，結冰過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現。
大學英語作文300字 篇5Dear ________,
Im very ___________ to know / learn that __________. I am writing to voice my suggestions / proposals / views concerning _________. In my opinion,_________. On the on hand,__________. On the other hand,__________.
As to _________, I would like to suggest / recommend that __________, because __________. It would be __________. In addition,___________. I am sure that __________.
Please inform me of your feedback on __________. I am looking forward to __________.
Truly yours,
_________
