高三unit10 grammar动词及时态语态-人教版[整理].ppt
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I wonder why Jenny _____us recently. We should have heard from her by now. ［2002全国统考题］
A. hasn't written B. doesn't write
C. won't write D. hadn't written
【解析】时间状语recently常与现在完成时连用。“We should have heard from her by now”的意思是“目前我们应该受到她的来信了”。should在本句中表示可能性、估计、猜测或推论，又如：They should have arrived at the station now.(他们现在应该抵达车站了)。答案：A。