不知所云 例：Many companies began using computers mouth.
段落过长，不分段，主语与动词一致问题 She are a good friend of mine that I has known for a long time. 主语和动词在数方面不一致。
句子别扭 We heated the soup in the microwave for too long and the shape of the container changed. 措辞过长或不清。换言之，句子显得滑稽可笑。
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。
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。
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。
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。
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。
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。
重复冗余 Personally， I believe what the newspaper prints. 一种意思的表述不止一次，或者某个词语不必要。
单数/复数 Many year ago， dinosaur roamed the Earths. 单词需要从单数变为复数，或者由复数变成单数。 单数可数名词 单数可数名词不能单独使用，应该将其变为复数形式或者加上限定词(a， the， my， his， her， Gary"s， no， any， 1， 3， 50， most，等等)。
拼写错误，主语、动词或宾语有问题 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。
语气与文章不符 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。
动词时态错误 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、将来时还是完成时等等。
选词不恰当 I was late getting home because I lost my way. 在这种情况下不应该使用该词 可选择更好的词语或者所使用的词语与文章的总体语气不符。
单词形式不当 I want to creation a great web site so that I can becoming wealth. 所使用的单词的形式不正确 检查一下应该使用该词的名词、形容词或副词形式的哪一种。
用词错误 Even I don‘t speak Spanish， I was able to find a bathroom in the department store. I gained a lot of pounds during vacation. 用词错误或在此种情况下该词不是最佳用词。
以上就是托福写作中经常出现的问题，一篇优秀的英语作文在内容和语言两方面应是一个统一体，任何一方面的欠缺都会直接影响到作文的质量。以上语句中的出现的常见错误，希望考生能够避免。为了文章的华丽偏用一些另类语句会出彩，但是若写作中有问题，可是得不偿失。
