Question

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．should

D．will

Answer 1

B

試題分析：考查情態(tài)動(dòng)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(diǎn)評(píng)：情態(tài)動(dòng)詞無論是表達(dá)“推測(cè)和可能性”，還是表達(dá)“虛擬”這一概念，只要是對(duì)過去已經(jīng)發(fā)生的事情進(jìn)行描述，一律用“情態(tài)動(dòng)詞+have done”這一結(jié)構(gòu)；對(duì)現(xiàn)在或?qū)�來的事情進(jìn)行描述，用“情態(tài)動(dòng)詞+動(dòng)詞或系動(dòng)詞原形”。