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300字范文 > we don't know how to do that.We don't know what ma

we don't know how to do that.We don't know what ma

时间:2022-06-26 17:38:48

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we don't know how to do that.We don't know what ma

问题补充:

we don know how to do that.We don know what makes us laughhow 后边为什么加 to 而what后不加呢

答案:

how to do that是不定式短语做宾语,也可以用how we can do that,是宾语从句.而what makes us laugh是宾语从句,且what 在从句中做主语,所以what 后面不加to.

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