这个不难,抓住以下几点即可
1,被动语态的固定格式~be动词(am/is/are/was/were)+动词的过去分词。例如,the boy was beaten by his father。注意黑体字就是被动语态了。
2,只有及物动词才能构成被动语态。不及物动词不能加宾语,所以是没法构成被动语态的。比如take place(发生),是个不及物动词词组,不能用于被动语态,我们不能说it was taken place。finish(结束/完成)是个及物动词,我们就可以用在被动语态,比如the work was finished。
3,被动语态中,动作的发出者可以用介词by来引出,例如the work was finished by Tom。
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