众所周知，考研英语中作文是由一个个句子而构成的。要想让一篇作文很出彩，首先得保证构成文章的每一个句子是正确的，其次才会上升到去考虑措词的准确性。鉴于同学们在写考研英语大作文时，会出现一些共性的错误，文都考研英语辅导老师就常见的错误给大家做了一个汇总，希望大家能够引起足够的重视。

　　A. 主谓一致：The number of sth is decreasing.

　　A great number of sth are.

　　B. 时态语态：

　　描述图画用进行时: doing

　　As is shown in the picture, there is sb doing sth, suggesting sth/with sb doing sth.

　　描述图表用过去时: 完成时

　　As is illustrated by the chart, there was an obvious increase/a dramatic decrease in the number of sth from 1998 to 2008.

　　There has been an increase

　　The number of sth has been increasing

　　预测趋势用一般将来时: will

　　The situation will develop for the/a better/worse direction.

　　C. 名词的数：

　　phenomenon phenomena/phenomenons

　　medium media

　　bacterium bacteria

　　D. 介词搭配

　　insist on persist in

　　I insist that we should do sth.

　　I insist on doing sth. I persist in doing sth.

　　E. 单词大小写及拼写错误

　　题目的大小写;

　　Human Needs and Wants

　　每句话的第一个字母和直接引语的第一个字母要大写;

　　He said, He is going to Shanghai next week.

　　专有名词和缩写字母要大写;

　　头衔在专有名词前要大写，在专有名词后则小写;

　　Caption SmithSmith, the captain

　　Uncle GeorgeGeorge, my uncle

　　F. 标点符号

　　写文章时，切忌从头到尾只用逗号的现象;要正确使用逗号和分号。

　　众所周知，考研英语中作文是由一个个句子而构成的。要想让一篇作文很出彩，首先得保证构成文章的每一个句子是正确的，其次才会上升到去考虑措词的准确性。鉴于同学们在写考研英语大作文时，会出现一些共性的错误，文都考研英语辅导老师就常见的错误给大家做了一个汇总，希望大家能够引起足够的重视。

　　A. 主谓一致：The number of sth is decreasing.

　　A great number of sth are.

　　B. 时态语态：

　　描述图画用进行时: doing

　　As is shown in the picture, there is sb doing sth, suggesting sth/with sb doing sth.

　　描述图表用过去时: 完成时

　　As is illustrated by the chart, there was an obvious increase/a dramatic decrease in the number of sth from 1998 to 2008.

　　There has been an increase

　　The number of sth has been increasing

　　预测趋势用一般将来时: will

　　The situation will develop for the/a better/worse direction.

　　C. 名词的数：

　　phenomenon phenomena/phenomenons

　　medium media

　　bacterium bacteria

　　D. 介词搭配

　　insist on persist in

　　I insist that we should do sth.

　　I insist on doing sth. I persist in doing sth.

　　E. 单词大小写及拼写错误

　　题目的大小写;

　　Human Needs and Wants

　　每句话的第一个字母和直接引语的第一个字母要大写;

　　He said, He is going to Shanghai next week.

　　专有名词和缩写字母要大写;

　　头衔在专有名词前要大写，在专有名词后则小写;

　　Caption SmithSmith, the captain

　　Uncle GeorgeGeorge, my uncle

　　F. 标点符号

　　写文章时，切忌从头到尾只用逗号的现象;要正确使用逗号和分号。