A
for表示“共计、达到”,后面跟时间段的ten hours 在介词for的宾语.若没有这个介词for,就无法表达该词义,并且sleep是不及物动词,会使别人误以为ten hours是sleep的宾语.
Children sleep____ ten hours a night.A.for B./ 哪个对?有什么区别吗?
2个回答
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