2014考研英语考察的是大家综合的英语水平，要想英语得高分，我们首先就要保证每个句子的正确性，这样才能保证整篇文章通畅连贯。下面我们来看看英语写作中我们常出现的句子错误。众所周知，考研英语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。鉴于同学们在写大作文时，会出现一些共性的错误，本文给大家做了一个汇总，希望大家能够引起足够的重视。

主谓一致：The number of sth is decreasing.

A great number of sth are…

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…(from 1998 to 2013)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.

名词的数：

phenomenon phenomena/phenomenons

medium media

bacterium bacteria

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.

单词大小写及拼写错误

题目的大小写(除冠词、连词和介词外， 其他词原则上都应该第一个字母大写);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(人名，地名)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;Captain Smith——Smith， the captain

Uncle George——George， my uncle

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。