If he ______ it, he _______ it.A.had seen; could have believedB.saw; couldn’t be
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If he ______ it, he _______ it.A.had seen; could have believed | B.saw; couldn’t believe | C.saw; couldn’t have believed | D.has seen; had believed |
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答案
A |
解析
考察虚拟语气.句意:如果他看见了它,他可能已经相信了. 表示与过去事实相反的假设,if 从句的谓语形式用过去完成时即had+过去分词; “could+have+done”是虚拟语气,表示对过去事情的假设,意思是本来能够做某事而没有做。故选A. |
举一反三
—Do you think the thief entered through the window? —No, if he had, I don’t believe, _______ broken the living-room’s window.A.he would have | B.he must have | C.he had | D.should he have |
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—Did you go swimming last Sunday? —No. We would have gone ______ nicer.A.if the weather was | B.would the weather have been | C.had the weather been | D.should the weather be |
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