非谓语动词句型问题⒈She is often heard to sing in the next room.(动词sing前面为什么要加to?)⒉The students were made to clean the street.(东西clean前面为什么要加to?)
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非谓语动词句型问题
⒈She is often heard to sing in the next room.
(动词sing前面为什么要加to?)
⒉The students were made to clean the street.
(东西clean前面为什么要加to?)
1.这牵涉到一个常见的英语语法现象.
2.如果在“使役动词(make/let/have)/感官动词 + 宾语(sb/sth) + 宾语补足语”结构中,如果使用不定式去做宾语补足语时,其在主动句中必须使用不带to的不定式,即动词原形结构.
如:I often hear her sing in the next room.
The school made the students clean the street.
3.但是楼主需要知道并谨记的是:该结构在被动句中使用时,必须把省略的不定式to补回.
所以上述两个例子变成被动语态时,则须变成:
She is often heard to sing in the next room (by me).
The students were made to clean the street (by the school).
4.这种语法现象只限制于不定式做宾语补足语的时候,如果是现在分词/过去分词做宾语补足语,则不能这样变化.
5.楼主只需要记住这个规定即可.英语语法这东西毕竟是舶来品,我们中国人非要去用语法解释清楚未免有点自圆其说.
be heard to do sth
be made to do sth
非谓语动词句型问题⒈She is often heard to sing in the next room.(动词sing前面为什么要加to?)⒉The students were made to clean the street.(东西clean前面为什么要加to?)
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