-- He was regarded as the best doctor in town. 他被认为是城里最好的医生。
注意:
有些使役动词和感官动词,如make, see, hear, watch, notice, observe, listen to等,在主动结构中跟不带to的动词不定式作宾语补足语,在变为被动结构时,不定式应加上to。
We heard him say good-bye to his friends. 我们听见他向朋友们道别。
He was heard to say good-bye to his friends. 他被听到向朋友们道别。
D. 含有情态动词的主动句变被动句
含有情态动词的谓语变成被动语态时,用“情态动词+ be done”构成。
情态动词
cancould
may/might
must
have/had to
will/would
shall/should
ought to
主动形式
cancould do
may/might do
must do
have/had to do
will/would do
shall/should do
ought to do
被动形式
cancould be done
may/might be done
must be done
have/had to be done
will/would be done
shall/should be done
ought to be done
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