Before ______,the play must be examined by the director.A.putting on B.to be put on C.put on D.being
put on 就可以表示被动，为何不选put on
人气：106 ℃ 时间：2020-04-08 03:28:40
解答
D
作介词宾语,要用动名词,逻辑主语是the play,可见是被动关系,所以用being put on
问题补充：
put on 就可以表示被动,为何不选put on
put on 是过去分词,不可以做介词before 的宾语
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