2. 职称英语
  3. ______ what to do, he went to the manager for help.A、Not to knowB、Not knowingC

______ what to do, he went to the manager for help.A、Not to knowB、Not knowingC

游客2024-06-29  37
问题 ______ what to do, he went to the manager for help.
选项 A、Not to know
B、Not knowing
C、Not having known
D、Having not known
答案 B
解析 本句中现在分词knowing作原因状语，其否定形式是在前面直接加not。例如：Not having received un answer, I decided to write another letter．(没有得到答复，我决定再写一封信。)故选B。
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