6.关联词语重复 Since I want to go to a good school, therefore I am trying to raise my test scores. 不能在该句的主要主语和主要动词前使用连词。
7.句子不完整 Many students have a hard time passing all the tests to get into college. For example, my friend in high school. 句子没有主要主语或主要动词，因为其实它应是一个从句。这是一个非常常见的错误，修改的方法是将两个句子连接起来。
8.不要使用get When I got home, I got tired, so I got a book and got into bed. Get太不正式，意思也过于含糊，不适合用在正式的场合。应将get改为一个更加具体的单词，如become, receive, find, achieve, 等等。
9.书写难以辨认 信息不正确 I would like to study in America because all modern technology originated there. 传的信息不正确，或者让人听起来觉得可能不正确（如果确实是正确的，应当解释为什么这样，因为读者不认为是正确的）。上述例句中，all的意思是百分之百；我们不能绝对地说每一件新东西都是从美国诞生的。为保险起见，应当使用many或most。 非英语单词 Computers are very helpful and advantageable. 尽管看起来象个单词，其实不是，至少不是个英文单词。使用这个单词的另一种形式。
10.介词多余 I would like to discuss about something important that you mentioned about to me during yesterday. We went to downtown yesterday to buy a watch. When I first came to the US, I did not have a lot of friends in here. In class, my classmate never mentioned about her husband. 在表示这种意思时此单词不能与介词连用。这种情况常见于downtown，home，there，here等词。这些词语在英语中是副词而非名词，因而不能在它们前面添加介词。
11.跑题或不相关 There are many reasons to buy a car, preferably a nice car. 这个意思与文章的主题无关。
12.陈词滥调 It is okay for children to fail sometimes. 所表达的意思很普通 大多数人都已经知道到了，因而就没有必要再说出来。