在比较正式的新闻、商务、法律等英语文体中，被动句式因为其更突出客观性的宾语或者事实被广为使用。雅思的图表分析和议论文都是比较正式的文体，所以我们也应该注意多用被动句式。尤其是在以下两个方面：

　　1 主语不确定

　　Someone murdered the millionaire last night.→The millionaire was murderedlast night。

　　2 主语是泛指很多人或者大部分人

　　To improve the air quality, we should reduce the use of private cars. →To improve the air quality, the use of private cars should be reduced。

　　Most people think that we can get a large share of benefit in the sales campaign.→It is widely believed that we can get a large share of benefit in the sale campaign。

　　被动句的用法不仅体现在主句中，在从句、非谓语动词短语中都有可能用到，如：

　　It is important for nations all over the world to join hands to control the software piracy. →It is important for nations all over the world to join hands to have the software piracy controlled。

　　I don’t expect that she returned. → She is not expected to have returned。

　　I am not sure whether the college graduates will find jobs in the financially difficult year. →I am not sure whether the college graduates will get employed in the financiallydifficult year。

　　但是因为汉语中本来是没有被动句式的，所以受汉化思维的影响很多考生不会想到这一点。这就要求我们对此要引起足够的重视，并且在平时多加练习以培养对其敏感度。