______how to do it , we had to help him.
问题描述：
______how to do it , we had to help him.
A.His not knowingB. The boy knowing not
C. He not knowing D. The boy's not having known
请详细分析
答
______how to do it ,we had to help him.
A.His not knowing B.The boy knowing not
C.He not knowing D.The boy's not having known
选A
这是独立主格结构
因为前后两句主语不一致,所以用独立主格
【物主代词+非谓语】的结构
B应该是The boy’s not knowing
D不应该用完成时,分析得 很清楚，但是答案是C嗯应该是C这是独立主格，我和动名词的复合结构搞起来了独立主格主语应该是从句原本的主语的主格形式，这边就是he动名词的复合结构不属于独立主格~