I bought a computer last year. I ______ it for one year.
A.buyB.have boughtC.have hadD.bought
C

試題分析:根據(jù)上文可知動作發(fā)生在過去,下文時間狀語for one year已經(jīng)有一年了,可知動作已經(jīng)完成,故用現(xiàn)在完成時態(tài),選C。
點評:現(xiàn)在完成時和帶有since或for等表示時間的狀語連用(since 后跟表示過去的一個時間點;for 后跟一段時間),表示動作或狀態(tài)從某一時刻開始,一直持續(xù)到現(xiàn)在,并有可能繼續(xù)延續(xù)下去。
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