1.句子成分不全
　　错误：I happy to have a picnic with you.
　　正确：I am happy to have a picnic with you.

　　2.主谓不一致
　　错误：She are a good friend of mine.
　　正确：She is a good friend of mine.

　　3.时态错误
　　错误：Although I have no work experience when I was a teenager, I always dreamed about having a job.
　　正确：Although I had no work experience when I was a teenager, I always dreamed about having a job.

　　4.词性不一致
　　错误：None can negative the importance of money.
　　正确：None can deny the importance of money.

5.结构不平行
　　错误：I was able to raise my TOEFL score by studying hard and I read lots of books.
　　正确：I raised my TOEFL score by studying hard and reading lots of books.

　　6.关联词语重复
　　错误：Since I want to go to a good school, therefore I am trying to raise my test scores.
　　正确：I am trying to raise my test scores because I want to go to a good school.
　　I am trying to raise my test scores in order to go to a good school.

　　7.介词多余或者搭配错误
　　错误：I would like to discuss about something important that you mentioned about to me during yesterday.
　　正确：I would like to discuss something important that was mentioned yesterday.

　　错误：Nowadays, people are crazy pursuing to be excellent.
　　正确：Nowadays, people are crazy about excellence.

　　8.There be句型误用
　　错误：There are many ways we get to know the outside world.
   正确：There are many ways for us to learn about the outside world.

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