初中英语被动语态知识点详解

时间:2018-10-17 英语知识 我要投稿

  英语中有一种主动句可以转换成两种被动句型,它们通常是一些表示客观说明的句子,如:

  People believed that she is honest. 大家相信她是诚实的。

  Its believed that she is honest. 大家相信她是诚实的。

  She is believed to be honest. 大家相信她是诚实的。

  比较上面两类被动句型可以发现,一类是it+be+过去分词+that从句,另一类则是主语+be+过去分词+不定式(其中的主语为前一类句型中that从句中的主语),通常可用于这两类被动句型的动词有assume, believe, expect, fear, feel, know, presume, report, say, suppose, think, understand等,比较(同时注意其中时态和动词形式的变化):

  Its expected that he will come soon.= He is expected to come soon. 预计他很快就会来。

  Its expected that he has come. =He is expected to have come. 估计他会已经来了。

  Its known that is a good singer. =He is known to be a good singer. 大家知道他是位优秀的歌手。

  Its known that was a good singer. =He is known to have been a good singer. 大家知道他曾是位优秀的歌手。