If I ______ about this computer program, a hage amount of time and energy would
题型：不详难度：来源：
If I ______ about this computer program, a hage amount of time and energy would have been saved.| A．know | B．knew | C．had known | D．have known |
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答案
| C |
解析
试题分析：考查虚拟语气：句意：如果我知道这电脑程序，大量的时间和精力就会被节省下来，从句意和主句的would have done可知是和过去相反的虚拟语气，if条件句用过去完成时，选C。
点评：考查虚拟语气的时候要注意和不同的时间相反的情况，主从句的时态是不一样的。要注意记忆。 |
举一反三
I didn’t go to the party, but I do wish I ____there.| A．was | B．were | C．had been | D．went |
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—My uncle suggests I ________abroad.
— I would rather you ________at home.| A．go；stay | B．went；stayed | C．go；stayed | D．went；stay |
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If these kind-hearted soldiers ___ us last week, we would not have such a good harvest.| A．helped | B．had helped | C．had not helped | D．didn’t help |
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— You could have asked Mr. Richard for help. He’s kind-hearted.
— Yes. But that _______ him a whole day.| A．would have taken | B．had taken | | C．would take | D．took |
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Had it not been for the fact that she ____ in the accident, she ____ in the race．| A．got injured; would have competed | | B．had got injured; would compete | | C．would be injured; would have competed | | D．should be injured; would compete |
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