Swain（1985）提出“可理解输出”假设，认为包括写在内的语言产生性运用有助于学习者检验目的语句法结构和词语的使用，促进语言运用的自动化，有效地达到了语言习得的目的。英语写作能力是英语听、说、读、写四种基本能力之一，英语写作能有效地促进语言知识的内化。以下是学历学位网整理的相关资料，希望对您有所帮助！

（一）
Seven days in a week
There are about fifty-two weeks in a year. And there are seven days in each week. The first day of a week is Sunday. The other days of a week between SundayandSaturdayare Monday, Tuesday, Wednesday Thursday and Friday. Monday is the second day, Tuesday is the third day, Wednesday is the fourth day, Thursday is the fifth day, and Friday is the sixth day. What's the last day? Do you know?
（二）
My special friend
I have a friend in the U.S. His name is Don Adams. I know him very well, but I have never met him. We write to each other all the time. My letters are very short. It is still hard for me to write in English. I received a letter from Don yesterday. It makes me very happy. He is coming to my country for a visit next summer. We are going to see each other for the first time.
（三）
The sea
What do know about the sea? Some people have seen it but others haven't. The sea looks beautiful on a fine sunny day and it can be very tough when there is a strong wind. What other things do you know about it? Of course, the sea is very large. In the world there is more sea than land. If you have swum in the sea, you know that the sea is salty. Rivers carry salt from the land into the sea. Some places of the sea are saltier than the other places. Do you know the Dead Sea? It is so salty that you can't sink when you are in the water! And fish cannot live in it!