—How did he get my telephone number?
—You ________ it . You told him last week.
A.should have forgottenB.may have forgotten
C.must have forgottenD.could have forgotten
B

試題分析:考查情態(tài)動(dòng)詞用法。本題考查了“情態(tài)動(dòng)詞+have done”的不同含義,這個(gè)結(jié)構(gòu)可以表示對(duì)過(guò)去情況的推測(cè),也可以表示虛擬語(yǔ)氣。Should have done本應(yīng)該做某事,實(shí)際上卻未做;may have done也許做了某事;must have done一定做了某事;could have done本可以做某事,實(shí)際上卻未做;句意:—他是怎么拿到我的電話(huà)號(hào)碼的?—你也許忘記了,上個(gè)星期你告訴他的。故B正確。
點(diǎn)評(píng):情態(tài)動(dòng)詞+have done”的不同含義,這個(gè)結(jié)構(gòu)可以表示對(duì)過(guò)去情況的推測(cè),也可以表示虛擬語(yǔ)氣是高考必考考點(diǎn),一定要牢記句型意思。must have done過(guò)去肯定做了某事。should have done 本應(yīng)該做而實(shí)際未做。can’t have done 過(guò)去不可能做了某事;shouldn’t have done 本不應(yīng)該做而實(shí)際做了。 need have done 本有必要做某事;needn’t have done 本沒(méi)有必要做某事;注意沒(méi)有 mustn’t have done的形式。
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