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It is our duty to keep our classroom clean and tidy.这句话谁做主语谁做谓语
人气:359 ℃ 时间:2019-11-04 13:56:47
解答
it是形式主语,真正的主语是后面的不定式短语to keep our classroom clean and tidy我问的是谁是主语谁是谓语谓语是is,真正的主语是后面的不定式短语to keep our classroom clean and tidy
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