Question

【题目】When the famous pianist turns thirty, he ______ the piano for more than twenty years.

A.playsB.will playC.has been playingD.will have been playing

Answer 1

【答案】D

【解析】

考查将来完成进行时。句意：当这位著名的钢琴家30岁时，他将已经演奏钢琴超过20年。分析句子可知，when引导的时间状语要遵循主将从现的规则，从句When the famous pianist turns thirty是一般现在时，则主句用将来时，再根据句意，可知他现在以至于到将来都在弹钢琴，故用将来完成进行时will have been doing。故选D项。