用现在分词的完成时态,表示分词的动作prepare发生在主句动作(decided)之前,相等于说：
Because the doctor had not prepared, he decided to postpone the operation.
如果直接用现在分词,分词的动作和主句的动作是同时发生的,例如：
Taking the umbrella, she rushed out of the door.那为什么不用made 呢如果用过去分词，则表示这个分词的逻辑主语（即主句的主语）和这个过去分词之间是被动的关系：Punished harshly by his mom, the girl cried hard.
___ full preparation,the doctor decided to postpone the operation.
___ full preparation,the doctor decided to postpone the operation.
A not making B not made C not to make D not hacing made
the answer is D,why not choose A,tell me why
A not making B not made C not to make D not hacing made
the answer is D,why not choose A,tell me why
英语人气：873 ℃时间：2020-01-29 23:51:11
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