I haven't seen him for many years.I hardly imagine ___ grown up.A him B hisC heD it正确答案是A,为什么不选B呢?怎样区分适用的情况?

I haven't seen him for many years.I hardly imagine ___ grown up.A him B hisC heD it正确答案是A,为什么不选B呢?怎样区分适用的情况?
I haven't seen him for many years.I hardly imagine ___ grown up.
A him
B his
C he
D it
正确答案是A,为什么不选B呢?
怎样区分适用的情况?

I haven't seen him for many years.I hardly imagine ___ grown up.A him B hisC heD it正确答案是A,为什么不选B呢?怎样区分适用的情况?
his 的意思是“他的”是代词,是不能跟动词的,必须跟名词.
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我很难想象他是怎么成长的。 根据答案应该是动词后面用人称宾格吧，不是很肯定，不好意思

因为不能想像的是长大了的他，不是他的长大，所以用him（他）不用his（他的）

i是主语，imagine是谓语，需要一个宾语，所以用him

此处imagine作vt.用，后面须接宾语，故用him，grown up作补足语表起说明作用，表示现在已经达到或完成的状态，若用his，后面应该是growing up。