第五题和第六题的D为什么不选?
2017-09-18
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选D是对的。考察的是虚拟语气。29.Tom,youaresolazy!Thiswork___hoursago.A.shouldfinishB.musthavefinishedC.shouldhavebeenfinishedD.mighthavefinished选C。Suan,youaresolazy.Thisjob___hoursbefore.A.shouldfinishB.couldbefinishedC.musthavebeenfinishedD.shouldhavebeenfinished这题选D。虚拟语气知识体系:条件从句中的谓语动词形式主句中的谓语动词形式与过去事实相反had+过去分词should/would+have+过去分词与现在事实相反过去式should/would+动词原形与将来事实相反1、过去式should/would+动词原形2、should+动词原形should/would+动词原形3、wereto+动词原形should/would+动词原形
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