题目内容
10.If we a table earlier,we couldn't be standing here in a queue.( )A. | have booked | B. | booked | C. | book | D. | had booked |
分析 句意为:如果我们早点预订桌子的话,我们就不会站在这儿排队了.
解答 答案:D
根据语境可知,此处是if引导的虚拟条件状语从句,从句中叙述的是与过去事实相反的情况,因为"我们没有早点订桌子",所以从句谓语动词用had done.因为事实上"我们没有订桌子(we haven't booked a table),为现在完成时,所以变成虚拟语气的条件状语从句为"过去完成时"we had booked.主句为情态动词加上真实情况的时态"现在进行时"--not be standing here.故正确答案为D项.
点评 主句与从句的动作发生在不同的时间,这时主,从句谓语动词的虚拟语气形式因时间不同而不同,这叫做混合条件句. 做题时,一定要看清主从句所表达的时间是否一致.
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