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1、第1页/共44页once there was true love for me but I didnt value it.When it silpped away between my fingers,I began to is the saddest thing in God could give me a second chance,I would tell the girl I love you.If there should be a time limit on this love,I wish it would be 10000years.第2页/共44页timetime If If
2、 clause(ifclause(if从句）从句）main clausemain clause（主句）（主句）now pastpastfuturefutureif 条件句中的应用+do sth+have done sth+do sthwouldcouldshouldmightwere/didhad done1.were/did do3.were to dowould shouldmightcouldwouldcouldmightshould第3页/共44页ex.1.If he were rich,he_ (将买房子）。2.If I should fail,I_.(再做一次）。3.If I ha
3、d taken your advice,I _（不会犯错误）4.If you had come earlier,you_ （可能会赶上火车）.would buy the house.would do it againwouldnt have made a mistake.might have caught the train.第4页/共44页What would you do if you won the lottery?If I won the lottery,I would第5页/共44页If I the lottery,I buy an expensive car.wonwould第6页
4、/共44页If I a lot of money now,I travel around the world.hadwould第7页/共44页If he _ more carefully,he _ the car accident yesterday.(drive/have)had driven would not have had 第8页/共44页If I _ how to swim,I _ trapped in this island.had learnt would not have been 第9页/共44页1.If Tom _(be)more careful in the exam,
5、he _(pass)it already.2.If you _(get)up earlier,you _(catch)the first train.had beenwould have passedhad gotwould have caughtPRACTICE:Fill in the blanks.第10页/共44页3.If I _(meet)you yesterday,we _(go)to the concert together.had metwould have gone第11页/共44页If he got/were to/should get up early tomorrow,h
6、e on time.would be 第12页/共44页If Mike should/were to hand in his homework today,the sun would rise from the west.第13页/共44页假如他来了,我们对他说什么呢？If he come,what we say to him.假如他看见我,就会认识我。If he /were to see me,he know me.were toshouldshouldwould第14页/共44页1.If there _(be)no natural resource any more,we _(make)u
7、se of nuclear power.2.What _(happen)if you _(get up)too late tomorrow?should beshould makewould happenshould get upPRACTICE:Fill in the blanks第15页/共44页3.If Robots _(control)the world some day,here _(be)no friendship.were to controlwould be第16页/共44页 主句与从句的动作发生在不同的时主句与从句的动作发生在不同的时间间,这时主从句位于动词的虚拟语气形这时主
8、从句位于动词的虚拟语气形式因时间不同而不同式因时间不同而不同,这叫做这叫做混合条件混合条件句句。例句中从句与过去事实相反,主句与现在事实相反 If you had asked him yesterday,you would know what to do now.第17页/共44页If the staff more careful,the mall on fire now.had beenwould not be第18页/共44页含蓄的虚拟条件句1.But for the help of my English teacher,I _ the first prize in the English
9、 Writing Competition.（09福建卷）A.would not win B.would not have won C.would win D.would have won2.He hesitated for a moment before kicking the ball,otherwise he _ a goal.（09上海春）had scored B.scored A.C.would score D.would have scored第19页/共44页2.宾语宾语从句的虚拟语气从句的虚拟语气1).wish/if only+宾语从句 表示很难实现的愿望，译为“但愿就好了”；“
10、可惜”。2)as though/as if+宾语从句表示与真实情况相反，译为“似乎，好像”3)would rather+宾语从句表示与真实意愿相反的情况，译为“宁愿做.”.第20页/共44页w wishish/if only/if onlyas if/as thoughas if/as though+had done(与过去事实相反)+did(be用were)(与现在事实相反)+would/could/might+do(将来不大可能实现的愿望)第21页/共44页第22页/共44页我要和你一样高就好了。I wish I were as tall as you.第23页/共44页我是一只鸟就好了。
11、I wish I were a bird.第24页/共44页但愿每天都是我的生日就好了If only every day were my birthday.第25页/共44页我宁愿我没吃那么多西瓜就好了。I would rather I hadnt eaten so much watermelon.第26页/共44页The party was terrible,I wish I never gone to it.had第27页/共44页If only it would rain tomorrow.how lovely the rain is!第28页/共44页He behaves as if
12、he the house.(But he doesnt own it or probably doesnt own it or we dont know whether he owns it or not.)owned第29页/共44页She talks about Rome as though she been there himself.had第30页/共44页他那样对待我,好像我是陌生人似的。He treats me as if I were a stranger.注意:如果表示的事情可能会发生,那么方式状语从句中的谓语动词可用陈述语气。Even if she were here,she
13、 could not solve the problem.第31页/共44页Everyone has his best wishes in the daily life.so I suggest that we should try our best to achieve our dreams.第32页/共44页3.表示愿望，表示愿望，命令、要求、建议的命令、要求、建议的动词构成的宾语从句动词构成的宾语从句。一个坚持：一个坚持：insist两个命令：两个命令：order,command 三个建议：三个建议：advise,suggest,propose四四个要求：个要求：demand,requi
14、re,request,ask that sb(should)do sth第33页/共44页我们建议Tom去休息一下。国王命令囚犯明天要实施死刑。他们要求我们派他们去那儿工作。We suggested that Tom _ _ The king ordered that the prisoners _ _ the next day.They requested that we _Ex:(should)have a rest.(should)be killed(should)send them.to work there第34页/共44页1.The smile on her face sugges
15、ts that she should agree with me.she agrees with me.2.The boy insisted that he hadnt broken the window.he shouldnt break the window.第35页/共44页Ex.1.Janes pale face suggested that she_(ill),and her parents suggested she_ (do)medical examination.2.He insisted that he _(be)right and that I _ (apologize)t
16、o him.suggest 暗示，表明（陈述语气）建议（虚拟语气should+do）insist 坚持认为，坚持某种观点（陈述语气）坚持做，坚持要求（虚拟语气should+do)was ill(should)dowas(should)apologize第36页/共44页4.表示建议，要求，命令，坚持的动词或相对应的名词构成的主语从句，表语从句，同位语从句中也用(should)+doadvice,suggestion,proposal,requirementrequest,order,command,desire,demandIt is/was suggested/requested/requi
17、red/ordered/proposed.that sb(should)do sth第37页/共44页我建议你休息一下。I suggest that you(should)have a rest.（宾语从句）My suggestion is that you(should)have a rest.(表语从句）I give the suggestion that you(should)have a rest.（同位语从句）It is suggested that you(should)have a rest.(主语从句）第38页/共44页Ex.1 My demand is that_(每个人要认
18、真听讲）.2 All of us are for the advice that the chemical factory _ (这个化学工厂应该关闭）。3.Its required that the students(should)learn a foreign language.everyone(should)listen to the teacher carefully.(should)be closed down.第39页/共44页It is/was important/necessary/essential/strange/natural.that sb(should)do sthI
19、ts a pity/a shame that sb(should)do sthIt is(high/about)time sb did sth5.固定的虚拟语气句式第40页/共44页Exercises:1.掌握电脑技术对每个人都是非常重要。Its important that everyone(should)master the skills of computer.2.到了我去接女儿的时间了Its time that I picked up my daughter.第41页/共44页6.Ex.1.How I wish every family _ a large house with a b
20、eautiful garden!(02 上海)A.has B.had C.will haveD.had had2.The teacher demanded that the work _ before 4 oclock.A.finished B.be finished C.should finish D.finish3.-What did the doctor say about your mothers illness?-He suggested that she _ an operation at once.A.must have B.had C.have D.had had第42页/共44页4.Is it necessary that he _ the examination?A.takes B.has to take C.must take D.take5.It is strange that he _ you this.A.would tell B.should tell C.had told D.has told第43页/共44页感谢您的观看！第44页/共44页