We can't laugh at him.改为被动语态是He can't be laugh at by us.
问题描述:
We can't laugh at him.改为被动语态是He can't be laugh at by us.
而另一句:He listens to the radio every day.改为被动语态是The radio is listened to by him every day. 这两句被动语态中为什么第一句中用“be”+动词过去分词,而第二句中用“is”+动词过去分词呢?谢谢!
答
因为第一句中的“can“是情态动词,情态动词后面要加动词原形,第一句中的被动语态是由“be+动词过去分词”构成的,由于“be"在情态动词“can"后面,所以要用原形“be"
第二句中的被动语态也是“be+动词过去分词" 但由于第二句中不存在情态动词,只是简单的现在时态,所以句中的"be"根据主语“the radio(第三人称单数)”进行配合就变成了“is" ,所以第二句中的被动语态就变成了"is+动词过去分词"