作业帮it _harf an hour to read the book?为什么答案是took 而不是cost?是half,不好意思 .它们都可以表示花费时间和金钱，为什么这里只能用took？
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it _harf an hour to read the book?为什么答案是took 而不是cost?是half,不好意思 .它们都可以表示花费时间和金钱，为什么这里只能用took？
it _harf an hour to read the book?
为什么答案是took 而不是cost?
是half,不好意思 .它们都可以表示花费时间和金钱，为什么这里只能用took？
it _harf an hour to read the book?为什么答案是took 而不是cost?是half,不好意思 .它们都可以表示花费时间和金钱，为什么这里只能用took？
首先呢,因为It takes (sb.) sometime to do sth.这是一个句式,即做某事花费某人多长时间,助于必须用it
其次,cost也为花费,但是主语为人或物,多数情况为花费多少金钱,而不是时间,所以这里不能用.
不知是否明白?
固定搭配it takes some time to do sth
cost指的是“花钱”多少，不能用来指时间！！
这里只能用took
it _harf an hour to read the book?为什么答案是took 而不是cost?是half,不好意思 .它们都可以表示花费时间和金钱，为什么这里只能用took？
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