10.I________ thank you too much for all your help to my son while we were away from home. 【答案】1.must 2.may/might 3.must 4.couldn't 5.must 6.should 7.would 8.needn't 9.shall 10.can't
二、“情态动词+have done”的常考用法 情态动词+have done 用法 must have done sth. 一定做过某事,其否定形式为can't/couldn't have done。 can/could have done sth. 1.本来能够做但却未做;2.可能做过某事。 can't/couldn't have done sth. 不可能做过某事。 情态动词+have done 用法 may/might have done sth. 或许/可能做过某事。 should/ought to have done sth. 本该做但却未做某事,其否定形式表示本不该做但却做了。 needn't have done sth. 做了本没有必要做的某事。 根据括号内的汉语提示完成下面的句子 1. I ___________(本没必要担心) before I came to the new school, for my classmates here are very friendly to me.(2015天津) 2.—Sorry, Mum! I failed the job interview again. —Oh, it's too bad.You _______(本应做) full preparations.(2015福建) 3. I ______________(不可能玩) myself more—it was a perfect day.(2017浙江) 4. Since nobody gave him any help, he ____________ (一定做)the research on his own.(2017课标Ⅱ) 5. —Why are your eyes so red? You ______________(不可能睡好) last night. —Yeah. I stayed up late writing a report.(2017四川)
【答案】1.needn't have worried 2.should have made 3.couldn't have enjoyed 4.must have done 5.could't have slept well 一、虚拟语气在非真实性条件句中的用法 虚拟语气 时间 虚拟条件从句 主句 与现在事实 相反的假设 If+主语+动词的过去式(be动词用were)。 主语+should/would/could/might+动词原形。 与过去事实 相反的假设 If+主语+had+过去分词。 主语+should/would/could/might+have+过去分词。 时间 虚拟条件从句 主句 与将来事实 相反的假设 1.If+主语+动词的过去式。 2.If+主语+were to+动词原形。 3.If+主语+should+动词原形。 主语+should/would/could/might+动词原形。 时间 虚拟条件从句 主句 易错点津 (1)在虚拟语气的从句中,动词be的过去时态一律用were,不用was,即从句中的be用were代替; (2)当条件状语从句表示的行为和主句表示的行为所发生的时间不一致时,被称为“错综时间条件句”,动词的形式要根据它所表示的时间做出相应的调整; (3)在虚拟条件状语从句中可省略if,把were, had, should提到句首,变为倒装句式。 根据括号中的动词提示,用适当的虚拟语气完成下面的句子 1.If I _________(not see) it with my own eyes, I wouldn't have believed it.(2015北京) 2.It might have saved me some trouble _________(I know) the schedule.(2015江苏) 3.We ________(be) back in the hotel now if you didn't lose the map.(2017北京) 4.Had he caught the morning train, he __________________ (not be) late for the meeting.(2017天津) 5.If Mr.Dewey ________ (be) present, he would have offered any possible assistance to the people there.(2017湖南) 【答案】1.hadn't seen 2.had I known 3.would be 4.would not have been 5.had been 二、wish与would rather宾语从句的虚拟语气 wish与would rather宾语从句的虚拟语气。 时间 would rather wish 过去 主语+动词过去分词。 现在 主语+动词过去式(be用were)。 将来 主语+动词过去式(be用were)。 主语+would/could/might+动词原形。
【2017届高考英语一轮复习《全优课堂》核心语法项项破课件:专题9 情态动词和虚拟语气(新人教版)】相关文章:
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