-–Mary knows the city quite well.
--She______ well have been there before.
A.needB.couldC.should D.may
D

試題分析:考查情態(tài)動詞:A. need 需要B. could 能夠C. should應該D. may可以,幾個選項只有may可以用may well do sth的意思是“有足夠/充分的理由去做某事”。 句意:瑪麗很了解這個城市。--她很有可能去過那里。選D。
點評:情態(tài)動詞要記住基本含義,還有情態(tài)動詞的多種含義,象could表示:能夠,也可以表示客觀上有可能。May還可以構成詞組:may as well do sth不妨做…,may well“有足夠/充分的理由去做某事”,如: You may well not accept his apology.你有足夠/充分的理由不接受他的道歉。
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