语法与词汇
He _____ unwisely, but he was at least trying to do something helpful.
A、
may have acted
B、
must have acted
C、
should act
D、
would act
【正确答案】
A
【答案解析】
句意:他做得也许不是十分明智,但至少他在努力帮忙。本题考查情态动词及虚拟语气。may have done用来提示说话人假设某人在过去可能曾做过某事,而实际上有没有做说话人不能肯定。must have done用来提示说话人假设某人在过去曾做过某事,说话人对其假设的内容十分肯定。
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