题目内容
11.By the time Jack returned home from England,his son, from college.( )A. | graduated | B. | has graduated | ||
C. | had been graduating | D. | had graduated |
分析 句意:等到杰克从英国回家的时候,他的儿子已经大学毕业了.
解答 答案D."by the time …"表示"到…的时候",通常引导一个时间状语从句,当从句用过去时的时候,主句通常用过去完成时.分析句子语境可知,从句中"return"所表示的动作发生在过去,主句中"graduate"所表示的动作发生在他回家之前,是"过去的过去",所以用过去完成时态,D项符合语境,故选D.
点评 本题考查时态的用法.解答此类题目的关键是要读懂句意,分析上下文的语境,从而判断时态,锁定答案.
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