took away our teacher's cell phone without being permitted
问题描述：
took away our teacher's cell phone without being permitted
Tom took away our teacher's cell phone without being permitted.
Really?i can't imagine that he _____ have done such a thing.
A.must B.may C.can D.should
should have done 是本来应该做的事没做.‘这个句子不是已经做了吗?怎么理解选择D.
答
答案：D
should还有一个特殊用法,意思是“居然,竟然”,用于表达说话人惊讶、不相信、怀疑等语气.
should have done sth在此种情况下,解释为“居然/竟然做了某事”.