2019-2020学年人教版英语选修六讲义:Unit 1 Period Four
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1、Period Four Grammar Subjunctive Mood (1)感知以下课文原句,补全方框下的小题1If you could have three of these paintings on the walls of your classroom,which would you choose?2If you were an artist,what kind of pictures would you paint?3If the rules of perspective had not been discovered,no one would have been able to
2、paint such realistic pictures.4Without the new paints and the new technique,we would not be able to see the many great masterpieces for which this period is famous.5There are scores of modern art styles,but without the Impressionists,many of these painting styles might not exist.1在虚拟条件句中,谓语动词用一般过去时(
3、be 动词常用 were)表示与现在事实相反的情况,主句谓语则用“would/should/could/might动词原形 ”表示。( 如句 1、2、4 和 5)2在虚拟条件句中,谓语动词一般用过去完成时表示与过去事实可能不符的情况,主句则用“would/should/could/mighthave过去分词”表示。(如句 3)虚拟语气是英语考查的重点之一。虚拟语气用来表示说话人所说的话并不是事实,而是一种假设、愿望、怀疑或推测。其使用情况如下:一、虚拟语气在 if 条件从句中的用法if 条件从句 条件从句的谓语形式 主句的谓语形式动词过去式(be 动词常用 were)would/should/
4、could/might动词原形表示与现在相反的情况 If we had enough money,we would buy a computer.如果我们有足够的钱,我们就会买台电脑。had过去分词would/should/could/mighthave过去分词表示与过去相反的情况If he had known your address yesterday,he would have visited you.如果他昨天知道你的地址,他就会拜访你了。should动词原形;were to动词原形;动词过去式(be 动词常用were)would/should/could/might动词原形表示与将来
5、相反的情况,是对将来的一种假设(发生的可能性不大)1.If it should rain tomorrow,we d stay at home.(下雨的可能性并不大)如果明天下雨,我们就待在家里。2.If I were to meet Mary some day,I would tell her what has happened here.如果有一天我遇到玛丽,我就会告诉她这里发生的一切。3.If our train arrived on time,we would have time to visit your sister.如果我们的火车能按时到达,我们就有时间去看你妹妹。注意:1虚拟条
6、件句中有 had,should ,were 时,可将 if 去掉,把 had,should ,were 提到主语之前,即倒装结构,如:Were they here now,they could help us.如果现在他们在这里,他们就能帮助我们。Had I worked harder at school,I d have got a better job.如果我在学校学习更努力的话,就会找到一份更好的工作。Should he agree to go there,we would send him there.要是他答应去的话,我们就派他去。2有时条件从句表示的动作和主句表示的动作发生的时间不
7、一致,这类句子称为错综时间条件句。此时主、从句动词的形式应根据各自所表示的时间进行调整。If he had taken my advice then,he wouldnt be in trouble now.如果那时他听取了我的建议,现在他就不会有麻烦了。If she were to leave,I would have heard about it.如果她要走,我会听说的。3某些介词或介词短语,如 but for,without,副词或连词,如otherwise,however,or,but 等也可以表达一个暗含的虚拟的条件,这种情况下要仔细阅读上下文的语境。二、使用虚拟语气的其他情况1(1
8、)在 wish 后的宾语从句,表示现在的愿望,谓语常用过去时。I wish I knew his address.我要是知道他的地址就好了。I wish I were young.我要是年轻就好了。I wish I could swim.我要是会游泳就好了。(2)表示过去不能实现的愿望,并对此感到遗憾或后悔,谓语用过去完成时。I wish you had written to him.我希望你写信给他了。(3)表示将来的愿望,谓语用 would/could/might动词原形,实现的可能性较低,接近一种客气的请求。I wish you wouldnt smoke any more.我希望你不再
9、抽烟了。I wish he could come tomorrow.我希望他明天能来。2(1)if only 后的从句中,表示现在的愿望,谓语常用过去时。If only mother were here now!现在要是妈妈在这里就好了!(2) 表示过去不能实现的愿望,并对此感到遗憾或后悔,谓语用过去完成时。I have failed in the exam.If only I had followed your advice!我考试没及格。要是我听了你的建议就好了!(3)表示将来的愿望,谓语用 would/could/might动词原形。If only it would stop raini
10、ng!要是雨能停就好了!3在 would rather 后的宾语从句中,谓语常用一般过去时表示现在或将来的情况;用过去完成时表示过去的情况。I would rather I hadnt been to such a place.我宁愿我没有去过那样一个地方。4在“It is (about/high) time(that) ”结构中,that 从句的谓语用过去式,有时也可用“should动词原形”形式, should 不能省略。It is high time that we fought/should fight against the haze.是我们该同雾霾开战的时候了。.单句语法填空1If
11、 we had caught(catch) the flight yesterday,we would be enjoying our holiday on the beach now.(2018天津 )2There is a good social life in the village,and I wish I had(have) a second chance to become more involved.(2018江苏)3If the new safety system had been put(put) to use,the accident would never have ha
12、ppened.(2017北京)4Do you have Bettys phone number?Yes.Otherwise,I wouldn t have been(not,be) able to reach her yesterday.(2017天津)5Were(be) it not for the support of the teachers,the student could not overcome her difficulty.(2017江苏)6Why didnt you tell me about your trouble last week? If you had told(t
13、ell) me,I could have helped.(2016北京)7If it had not been(not,be) for his invitation the other day,I should not be here now.(2016江苏)8I was wearing a seatbelt.If I hadnt been wearing one,I would have been injured(injure).(2016天津)9Without his wartime experiences,Hemingway wouldnt have written(not,write)
14、 his famous novel A Farewell to Arms.(2015重庆)10I wish I had been(be) at my sisters wedding last Tuesday,but I was on a business trip in New York then.(2015天津).单句改错(仅有 1 处错误)If you me,would you talk to them ?(2015四川,短文改错)arewere.单句语法填空1If there should be/were(be) any change about the date,I would inf
15、orm you in time.2Had the weather been good,the twins would have gone(go) out for a walk.3My best friend is in trouble.If only I had(have) enough money to help her!4How I wish I had seen(see) her at the station,but I was too busy.5We arrived there on time.Otherwise we would have missed(miss) the earl
16、y bus.单句改错(每小题仅有 1 处错误 )6If only I played computer games last night!haventhadnt7If it 或 this afternoon,the football match would be put off. should rainrained8If I a big boss,I would help the poor children in the world.waswere9I would rather I accepted his offer that day.haventhadnt10He wishes his so
17、n become a famous doctor someday.willwould.完成句子11If only I could invent a powerful robot !要是我能发明一个强大的机器人就好了!12I wish I could/would go to the moon in a spaceship one day.我希望有一天我能乘坐宇宙飞船登上月球。13If he hadnt been late last night,he would have grasped the chance.如果他昨晚没有迟到,他就会抓住这次机会了。14Without exams,we woul
18、d live a much easier life now.要是没有考试,现在我们会过着一种轻松很多的生活。15He would rather he hadn t shouted at his son that day.他宁愿那天没有对儿子大喊大叫。基础巩固.单句语法填空1But for your help,we would have failed(fail) the exam.2If you had worked carefully,you wouldnt have made (not,make) so many mistakes.3If he were(be) here this afte
19、rnoon I would go with him.4If it were to rain tomorrow,the match would be postponed(postpone)5Its (high) time we did/should do(do) our homework.6The play was over.If only you had come(come) a few minutes earlier!7Without air,there would be(be) no living things.8Had(have) he been more careful,the mis
20、take would not have been made.9This watch has gone wrong.I wish I had bought(buy) a better one.10Dont come tomorrow.Id rather you came(come) next week.单句改错(每小题仅有 1 处错误 )11If I more time now,I would learn another foreign language.havehad12I would rather he the wall red next time.paintspainted13If it
21、not been for the doctors timely operation that day,he would have died.hashad14I wish I had a chance to talk to you last night,but you left so early. had15If you hadnt seen that film late last night,you not be so sleepy willwould/could/should/mightnow.16They were abroad during the months when we were
22、 carrying out the investigation,or they would come to our help. have17If I paid him more money for it then,he would have felt satisfied with the deal. had(2018山东菏泽期末)18He very busy last week,or he would have helped you with your experiment.werewas.句型转换19If I had studied science instead of literature
23、 then,I would have been able to give you more help. Had I studied science instead of literature then, I would have been able to give you more help.(倒 装 )20If it hadnt been for the teachers help,I wouldnt have made so much progress.Without/But for/Had it not been for the teachers help,I wouldnt have
24、made so much progress.21If he had studied hard last term,he would have passed the exam.He would have passed the exam,but he didnt study hard last term.22If I were to do the work , I should do it in a different way.Were I to do the work,I should do it in a different way.(倒装)23If I had known she was a
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