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Tom's father had him finish his homework on time.(改成被动语态)

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Tom's father had him finish his homework on time.(改成被动语态)
Tom __________ had ___________ finish his homework on time by his father.
可否告诉我空格应填什么?说说原因?
Tom's father had him finish his homework on time.(改成被动语态)
was to
第一个空主要就是时态一致
第二个空是三让make/let/have(这句一般过去用的had)主动宾补省略to,被动语态中to要还原出来,不过实话,用have的还真不多,一般这题都是用make来考
再提醒下,两个had不一样,上面那个是过去式,下面这个是过去分词,虽然长得一样
再问: 为什么在被动语态中要还原to?
再答: 所有主动语态中强制省略的to在被动语态中都要还原,这是语法点啊,没学过?还是你们当年学make+宾语+do的时候直接就把那个叫做动词原型了?那叫省略to的不定式