对呀，是to do something.但do 是 finish。doing是动名词，来表示something部分
it takes him two hours to finish doing his homework为啥用doing?
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相关问题
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It well take him an hour _______（do ）his homework .
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often takes him an hour to do his homework.
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It took him about two hours to do his homework.(改同义句)
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It takes him three hours to do his homework every day?同义句)
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It takes him about an hour a day to do his homework.(改为同义句）
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It takes me about two hour to do my homework about two hour提
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it takes me two hours to do my homework同义句转换 i _ two hours _
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It takes more than two hours to do my homework every day.
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It ____ him about an hour _____ _____ doing his homework las
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It takes him two hours to do housework each week.改为一般疑问句