Something terrible       have happened if Li Chang was not coming to eat in his restaurant as he always did.
A.ought to B.must C.shouldD.will
B

試題分析:考查情態(tài)動詞+完成式的用法:A. ought to應(yīng)該B. must必須C. should應(yīng)該D. will將要,句意:如果李暢不象平常一樣到他的飯店吃飯,一定發(fā)生了可怕的事情。Must have done是過去一定做了。ought to/ Should have done本該做卻沒做,選B
點評:情態(tài)動詞無論是表達“推測和可能性”,還是表達“虛擬”這一概念,只要是對過去已經(jīng)發(fā)生的事情進行描述,一律用“情態(tài)動詞+have done”這一結(jié)構(gòu);對現(xiàn)在或?qū)淼氖虑檫M行描述,用“情態(tài)動詞+動詞或系動詞原形”。
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