_finished his homework ,he had to stay home at the weedend.A.Not having B.having not C.Being not D.having no being.这四个选项是什么意思,在什么情况用.
问题描述：
_finished his homework ,he had to stay home at the weedend.
A.Not having B.having not C.Being not D.having no being.
这四个选项是什么意思,在什么情况用.
答
你好。答案是A
Not having finished his homework 这个部分是分词结构做原因状语，可以改写成As / Since he hadn't finished his homework,he - - - - - 。
答
A. Not having
因为还未完成作业，他周末不得不呆在家里。
A.这里用分词结构的完成形式，它的否定直接在分词前加not
答
A
现在分词的否定为not doing/ not having done.
其余几个都不对的,干扰选项.