1.托福写作答题结构不平行
例子：I was able to raise my TOEFL score by studying hard and I read lots of books.
这句话的写作结构是有问题的，当将一系列的单词并列连接起来的时候，应当使用词性相同或同一类型的短语。
2.表达方式不符合语言习惯，不知所云
例子：Many companies began using computers mouth.
3.段落过长，不分段，主语与动词一致问题
例子：She are a good friend of mine that I has known for a long time.
主语和动词不一致。
4.句子别扭
例子：We heated the soup in the microwave for too long and the shape of the container changed.
措辞过长或不清。
5.拼写错误主语、动词或宾语有问题
例子：I want to buy something for my mother that she will like it. There was a terrible accident happen yesterday.
句子的基本结构有问题，缺少主语、动词或宾语，或者这些成分重复。
6.语气与文章不符
例子：I was kind of mad at the guy who vociferated angry words at me.
I have heard many wonderful things about such cosmopolitan cities as Paris, London, Tokyo, and Hong Kong and I would love to visit these cities to check them out.
语气与文章其他部分不相符，可能是过于正式或者太不正式。
7.代词指代不明
例子：If people do not speak the same language, it has a greater chance of misco munication. I intend to complete my studies in the United States because they have good prrams there.
代词所指代的指示词(介词所代替的名词)不清楚。
8.过于笼统
例子：We should use our resources on Earth because the Earth is getting worse.
句子或者所表达的意思过于笼统，不能提供多少信息。
9.托福写作答题使用动词的时态错误
例子：Yesterday I will go to the store because tomorrow I needed some food.
动词时态不正确，检查一下是应该用现在时、过去时、将来时或者是完成时等等。
10.介词多余
例子：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。
