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英语
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He found it difficult to sleep.为什么is省略?
人气:295 ℃ 时间:2019-11-22 14:12:52
解答
因为difficult是宾语补足语,如果加上is,原句就会有两个谓语动词,一个是find
另一个是 is(这是不允许的,英文的单句中只允许有一个谓语动词).
如果加上is可以这么说:He found that it is difficult to sleep.
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