② 如果从句中的谓语动词所表示的动作明显发生在主句谓语动词所表示的动作之前,从句中须用过去完成时,如:I didn’t know that she had been to London twice.
③ 如果从句中的谓语动词所表示的动作发生在主句谓语动词所表示的动作之后,从句须用过去将来时,如:They didn’t know when they would have a rest.
④ 如果从句中说明的是一种普遍真理现象,虽然主句的谓语动词为过去时态从句中仍要用一般现在时,如:When I was a little child, my father told me that the earth is round.
⑤ 如果从句中有表示具体过去时间的状语,虽然其谓语动词所表示的动作发生在主句谓语动词所表示的动作之前,从句仍用一般过去时,但如果该状语表示的时间不具体,则从句仍要用过去完成时,如:Tome said he was born in 1975.
(1)宾补为动词不定式,如:They asked her to sing a song. →She was asked to sing a song. 在动词make, see, hear, watch, notice等之后,不定式的to在主动语态里可要省略,而被动语态里不能省,如:Tom was seen to come out of the lab.
(2)宾补为-ing,-ed分词,改为被动后不变:如:They heard them singing at the time.→They were heard singing at that time.
(3)宾补为形容词、副词、名词或介词短语,改为被动后不变:如:She kept me busy all the morning. →I was kept busy all the morning.
【2017年高考英语一轮复习讲练测:必修3 语法专题复习 动词时态语态复习(1)(讲)(解析版)】相关文章:
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