高三英语一轮复习专题情态动词与虚拟语气ppt课件.ppt

走向高考 英语,路漫漫其修远兮 吾将上下而求索,人教版(课标卷地区) 高考总复习,语法专项突破,第二部分,专题九情态动词与虚拟语气,第二部分,情态动词一、9大情态动词的基本用法,二、3组易混情态动词用法比较,三、5大表示推测的情态动词用法比较,虚拟语气一、状语从句中虚拟语气的用法1非真实条件句中虚拟语气的用法,2.目的状语从句(1)so that/in order that从句：从句谓语用can/could/may/ might动词原形。We got up early in order that we could catch the early bus.我们早起是为了能赶上早班车。(2)for fear that/in case that从句：从句谓语用should动词原形，意为“以防，万一”。We got up early for fear that we should miss the early bus.我们早起以防错过早班车。,(3)lest从句：从句谓语用should动词原形，意为“以防，万一”。We got up early lest that we should miss the early bus.我们早起以防错过早班车。,3方式状语从句as if/as though从句：(1)与现在事实相反，从句用一般过去时；(2)与过去事实相反，从句用过去完成时；(3)与将来事实相反，从句谓语用would/could/might动词原形。名师点拨as if/as though连接的从句表示可能的事实时，不需用虚拟语气。She speaks English as if/as though she were a native of New York.她讲英语好像她是一位地道的纽约人。(虚拟语气)It seems as if he doesnt know her.他似乎不认识她。(可能的事实),二、其他从句中虚拟语气的用法1主语从句中的虚拟语气It is desired/suggested/proposed/necessary/important/strange/ natural/essential/a pitythat从句，从句中的谓语动词用“(should)动词原形”。Its strange that she(should)make so much trouble.很奇怪她居然惹这么多麻烦。,2宾语从句中的3种虚拟语气(1)表示“建议，命令，要求”等意义时，名词性从句用“(should)动词原形”。坚持：动词insist；命令：order，command；建议：动词advise，suggest，propose，recommend；要求：动词request，require，demand，ask。,It is suggested that I(should)exercise every day.有人建议我应该天天锻炼。Teachers recommend parents not allow their children under 12 to ride bicycles to school for safety.老师建议父母出于安全考虑最好不要让12岁以下的孩子骑自行车去学校。名师点拨suggest意为“表明，暗示”时，宾语从句不用虚拟语气；insist意为“坚持说”时，宾语从句不用虚拟语气。,(2)I wish(that)宾语从句(虚拟语气)。表示愿望与“现在事实相反”，从句用一般过去时；How he wishes that he were a bird!他真希望他是一只小鸟。表示愿望与“过去事实相反”，从句用过去完成时；We wish that we had visited the Great Wall last year.我们要是去年去参观长城就好了。表示将来愿望实现的可能性很小，从句常用could/would动词原形。We wish we would live on the moon one day.但愿我们有一天能住在月球上。,(3)would rather/preferthat从句(从句用虚拟语气)表示愿望与“现在事实或将来事实相反”，从句用一般过去时；I would rather you were not here with me now.我宁愿你现在不和我在一起。表示愿望与“过去事实相反”，从句用过去完成时。I would rather you hadnt done that.我宁愿你没做过那件事。,3表语从句和同位语从句中的两种虚拟语气(1)在suggestion，proposal，order，plan，idea，request，advice等名词后的表语从句和同位语从句中要用虚拟语气。其构成是“(should)动词原形”。He gave orders that the guests(should)be hospitably entertained.他下达命令客人们应该被热情款待。,(2)as if, as though引导的表语从句和方式状语从句中常用虚拟语气，与现在事实相反用一般过去时；与过去事实相反用过去完成时。It looks as if he were 10 years younger today.他今天看上去似乎年轻了10岁。It looks as if he hadnt had a meal for a week.他好像一周没吃过饭了。,4定语从句中的虚拟语气Its(about/high/very)timethat从句(从句用虚拟语气，谓语动词用一般过去时或should do，should不能省略)，意为“某人该做某事了”。Its time that we should go/went home.我们该回家了。,三、3种特殊的虚拟语气结构,