My aunt said she came back ( ) a week A.for B. in C.after

问题描述:

My aunt said she came back ( ) a week A.for B. in C.after
老师给答案是C为什么A不可以!?

因为come back 是一个“点动词”,for+时间代表一段延续的时间,两者不搭配啊!


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