高中英语复习北师大版-虚拟语气用于条件句》优-(共25张)课件.ppt

1、岳西中学岳西中学 胡晓东胡晓东 IF ALL WERE ONEIf all the apple trees were one tree,what a big tree it would be.If all the apples were one apple,what a big apple it would be.If the big apple fell off the big tree and hit Newton2,what a great pain it would be.虚拟语气虚拟语气用来表示说话人用来表示说话人所说的话所说的话不是一个事实不是一个事实，而而只是一种愿望、假设、只是

2、一种愿望、假设、怀疑、猜测、空想怀疑、猜测、空想等。等。虚拟语气用于条件句虚拟语气用于条件句条件句有条件句有真实条件句和非真实条件句真实条件句和非真实条件句两种。两种。1.真实条件句真实条件句所表示的假设是所表示的假设是可能发生或实现可能发生或实现的，句中的条件的，句中的条件从句和结果从句皆用直陈语气。如：从句和结果从句皆用直陈语气。如：(1).If I have enough money,I will buy a computer.假若我有钱，我就买台电脑。假若我有钱，我就买台电脑。(2).If they keep on stealing,they will reap what they s

3、ow.如果他们继续偷窃，必将自食其果。如果他们继续偷窃，必将自食其果。(3).If you have not finished with that book,you can keep it for one more day.如果那本书你还没读完，你可以再看一天。如果那本书你还没读完，你可以再看一天。2.非真实条件句非真实条件句所表示的假设则是所表示的假设则是不可能或不大可能不可能或不大可能发生或实发生或实现的，句中的条件从句和结果从句皆需用现的，句中的条件从句和结果从句皆需用虚拟语气虚拟语气。用在用在if if 引导的非真引导的非真实条件句中实条件句中虚拟语气虚拟语气 动词的过去式动词的过去式

4、（动词（动词be通常通常用用were)should,would,might,could（not)动词原形动词原形现在现在过去过去 had+过去分过去分词词 should,would,might,could(not)have+过去分词过去分词将来将来 动词过去式动词过去式 were to+动词原形动词原形should+动词原形动词原形should,would,might,could(not)动词原动词原形形12345If I were the headmaster.If I were the headmaster If I were the headmaster,I would not allo

5、w students throw litter about.If I were the headmaster,I would persuade students not to fall in love.If I were the headmaster,I would punish students who smoke.If I were the headmaster,I would advise students not to put cups on the desk.If I were the headmaster,I would forbid students to speak in cl

6、ass.If he_ (drive)more carefully,he (have)the car accident yesterday.If I _time last night,I _ to see the film with you.What What wouldwould you do if you do if you you wonwon the lottery?the lottery?If I If I wonwon the lottery,the lottery,I I wouldwouldIf I won the lottery,I would buy a villa.If I

7、 were to win the lottery,I would build a hope primary school.If I should win the lottery,I would travel around the world.如果如果上天上天(GodGod)能够给我能够给我一个一个再来一次的机再来一次的机（another another chancechance），我会对那个女孩子我会对那个女孩子说：我爱你。如果说：我爱你。如果非要非要(have have toto)在这份爱上加上一个期限在这份爱上加上一个期限（add a time limit to the add a tim

8、e limit to the lovelove），我希望是），我希望是一万年一万年 If God were to give me another chance,I would say to that girl，“I love you”.If I had to add a time limit to the love，I hope it would be 10000 years.1、条件从句与主句所表的时间不一致、条件从句与主句所表的时间不一致2、条件从句中省略、条件从句中省略if的情况的情况 虚拟语气假设条件句型注意点：虚拟语气假设条件句型注意点：假设条件从句谓语动词发生的时间与主句所假设条件

9、从句谓语动词发生的时间与主句所假设的谓语动词不一致，叫做假设的谓语动词不一致，叫做错综条件错综条件虚虚拟语气。主句和从句的谓语动词要依照假拟语气。主句和从句的谓语动词要依照假设的时间而定。设的时间而定。If the weather had been finer,the crops would be growing still better.If you had followed the teachers advice,you wouldnt be in the hospital.例句中从句与例句中从句与过去事实过去事实相反相反,主句与主句与现在事实现在事实相反相反If you studied

10、hard,you wouldnt regret tomorrow.例句中从句与例句中从句与现在现在事实事实相反相反,主句与主句与过去事实过去事实相反相反省略省略if倒装句倒装句 在条件句中，可省略在条件句中，可省略 if，把，把were,had,should 提提到句首，变为倒装句式到句首，变为倒装句式If I were at school again,I would study harder.Were I at school again,I would study harder.If you had come earlier,you would have met him.Had you co

11、me earlier,you would have met him.If it should rain tomorrow,we would not go climbing.Should it rain tomorrow,we would not go climbing.1.If you had gone to HeFei,you would have missed the party.2.If it were sunny tomorrow,I would come to see you.3.If I had known everything,I wouldnt be here.=Had you gone to HeFei,you would have met him.=Were it sunny tomorrow,I would come to see you.=Had I known everything,I wouldnt be hereIf I _a teacher,I.