— You could have asked Mr. Richard for help. He’s kind-hearted.
— Yes. But that _______ him a whole day.
A．would have takenB．had taken
C．would takeD．took
A

試題分析：考查虛擬語氣。句意：—你本可以向Mr. Richard求助，他是一個(gè)好心腸的人�！堑�。但是那卻會(huì)花掉他一整天的時(shí)間。本句是一個(gè)與過去事實(shí)相反的虛擬語氣。根據(jù)句意說明前者根本沒有向Mr. Richard求助，那么要花掉Mr. Richard一整天的時(shí)間也是不可能的事情，同時(shí)這與過去事實(shí)相反，故使用情態(tài)動(dòng)詞+have done的形式。故A正確。
點(diǎn)評(píng)：在虛擬語氣里要注意具體的時(shí)間，如果是與過去事實(shí)相反，那么使用情態(tài)動(dòng)詞+have done的形式；如果是與現(xiàn)在事實(shí)相反就使用情態(tài)動(dòng)詞+動(dòng)詞原形。在具體的語境中要靈活掌握。
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