Jack doesn’t smoke now, but he ______ for almost twenty years.
A.smokedB.was smokingC.has smokedD.had smoked
A

試題分析:考查時態(tài)。本題特別容易錯選C項?忌鷷鶕(jù)for twenty years認為現(xiàn)在現(xiàn)在完成時。實際上本題與前句的now形成對比。句意:Jack現(xiàn)在不抽煙。但是他以前抽了幾乎20年。是對以前發(fā)生的事情的描述,故使用過去時。
點評:本題的時態(tài)是構(gòu)成一個對比的關(guān)系,是現(xiàn)在與過去的對比,所以前半句使用現(xiàn)在時,后半句使用過去時。
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