早教吧作业答案频道 -->英语-->
--- Where is Mary?--- She ____ in the library.A.should be B.must beC.can be D.must have been为什么D不对?
题目详情
--- Where is Mary?--- She ____ in the library.
A.should be B.must be
C.can be D.must have been
为什么D不对?
A.should be B.must be
C.can be D.must have been
为什么D不对?
▼优质解答
答案和解析
must have been 的意思是,Mary到现在肯定还在呆在图书馆
然而问句问的是一个时刻的状况,问Mary在哪里.
你回答 “到现在还在”就不对了,它只是问你这个时刻Mary在哪里而已.用be是对的
然而问句问的是一个时刻的状况,问Mary在哪里.
你回答 “到现在还在”就不对了,它只是问你这个时刻Mary在哪里而已.用be是对的
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