Question

—Mary’s got crazy and has been sent to the mental hospital. Did you tell her boss about that?
—Yes, but I _______her husband first.  

A．can have told

B．should have told

C．need have told

D．must have told

Answer 1

B

試題分析：考查情態(tài)動(dòng)詞用法。Can have done可能做了某事；Should have done本應(yīng)該做某事，實(shí)際上卻未做；need have done本需要做某事，實(shí)際上卻未做；must have done一定做了某事；句意：—Mary瘋掉了，已經(jīng)被送到了精神病醫(yī)院。你把這件事情告訴她的老板了嗎?—是的。但是我本應(yīng)該先告訴他丈夫的。BC兩項(xiàng)是虛擬語氣，表示對(duì)過去的虛擬。AD兩項(xiàng)表示對(duì)過去情況的推測(cè)。
點(diǎn)評(píng)：“情態(tài)動(dòng)詞+have done”可以表示對(duì)過去情況的推測(cè)也可以表示對(duì)過去情況的虛擬。如Can have done可能做了某事；must have done一定做了某事；這兩個(gè)詞組不是對(duì)過去情況的推測(cè)；Should have done本應(yīng)該做某事，實(shí)際上卻未做；need have done本需要做某事，實(shí)際上卻未做；表示對(duì)過去情況的虛擬。