13.标点问题　I love animals. And I like to help them. Because they are helpless. So I want　to become a vet.　这是一个非常普遍的问题!许多学生在句子中使用了太多的句号，尤其是当他们用手写的时候。

　　14.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。

　　15.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)。

　　16.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。

　　17.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。

　　18.代词指代不明　If people do not speak the same language， it has a greater chance of　miscommunication. I intend to complete my studies in the United States because they have　good programs there. 代词所指代的指示词(介词所代替的名词)不清楚。

　　19.过于笼统　We should use our resources on Earth because the Earth is getting worse.　句子或它所表达的意思过于笼统，不能提供多少信息。

　　20.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。

　　21.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。

　　22.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。

　　23.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用词。