动词的语态 语态有两种:主动语态和被动语态。
主语是动作的发出者为主动语态;主语是动作的接受者为被动语态。
1)若宾语补足语是不带to 的不定式,变为被动语态 时,该不定式前要加"to"。此类动词为感官动词。
feel, hear, help, listen to, look at, make, observe, see, notice, watch The teacher made me go out of the classroom. --> I was made to go out of the classroom (by the teacher).
We saw him play football on the playground. --> He was seen to play football on the playground.
2)情态动词+ be +过去分词,构成被动语态。
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