1、单复数要看前后文,这个应该不会难倒你的
2、如果后面是单就It,反之用them
look them up还是look it up
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相关问题
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look it up合适还是 look up it合适？
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look it up与look them up有什么区别,怎么用
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什么时候是look up them ,什么时候look them up?
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look up sb 还是 look up on sb 还是look up at sb 还是look upon to s
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look up sth,up应该是副词,为什么有look them up的说法,代词什么时候放中间,什么时候放后面
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为什么说 look it up 而不说look it for
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是cut up them 还是cut them up 是mix up them 还是mix the
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look into look through look up look after
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pick them up还是 pick up them
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look up look for make up make sure 的区别