1、Today we buried our 20-year-old son.He was killed instantly in a motorcycle accident yesterday.How I wish I had known it when I talked to him last time.If I had known what would happen,I would have said,Jim,I love you and Im so very proud of you.Read the following essay and payspecial attention to t
2、he sentence in red.Subjunctive mood (虚拟语气）Unreal conditionals with“if clause”if引导的虚拟条件句中1.If it doesnt rain tomorrow，we will go to the park.1.If引导的条件状语从句If引导的真实条件句2.If he had seen you yesterday，he would have asked you about it.If引导的虚拟条件句 What would/could you do if you were a superman?If I were a sup
3、erman,I would/could If I were a superman,I could protectpeople who are in danger.Look and learn:If I got much money,I might/should What might/should you do if you got much money?If I got much money,I should donatesome to people suffering the earthquake.What would/could you do if you lived on the moo
4、n?If I lived on the moon,I would/could/might/shouldIf I lived on the moon,I might see the beautyChange.If I were a superman,I could protect people who are in danger.If I lived on the moon,I might see the beautyChange.If I got much money,I should donate some to people suffering the earthquake.Find ou
5、t the rules条件从句主句did/were(be动词一般用were,非正式情况可用was）would(could,might,should)+do总结1.Opposite to the present truth与现在事实相反时，主、从句谓语构成would intention;plan;expected result (意图；计划；必然结果）could ability;possibility（能够；可能性）might possibility（可能性）should suggestion（建议）TIPTranslation:1 如果我是你，我可能会告诉他真相。If I _ you,I _h
6、im the truth.2 要是我哥哥在这儿，一切都会很顺利的.If my brother _ here,everything _ all right.weremight tellwerewould bePractice:要是我哥哥昨天在这儿，一切都会很顺利的.If my brother _ here,everything _ all right.had beenwould have been比较一下发现什么不同了吗？1.If my brother were here,everything would be all right.2.If my brother had been here ye
7、sterday,everything would have been all right.If he (drive)morecarefully,he(have)the car accident yesterday.had drivenwould not have hadLook and learn:If they hadnt committed a crime,they wouldnt have been caughtby the police.Find out the structureIf my brother had been here yesterday,everything woul
8、d have been all right.If he had driven more carefully,he wouldnt have had the car accident yesterday.If they hadnt committed a crime,they wouldnt have been caught by the police.条件从句主句had donewould(should,could,might)+have done总结2.Opposite to the past truth与过去事实相反时，主、从句谓语构成1.If Tom _(be)more careful
9、in the exam,he _ (pass)it already.2.If you _(get)up earlier,you _ (catch)the first train.3.If I _(meet)you yesterday,we _ (go)to the concert together.had beenwould have passedhad gotmight have caughthad metcould have gonePractice:Zhou Xing Xings regret曾经有一份真挚的感情放在我的面前，我没有珍惜。等我失去的时候我才后悔莫及。If I _ when
10、 I got it,I _ when I lost it.had valued the true lovewouldnt have greatly regretted如果上天能够给我一个再来一次的机会，我会对那个女孩子说三个字：“我爱你”。If God _ me another chance right now,I _ the three words to the girl,“I love you”.offeredwould utter：Would you please help me move house tomorrow?：Id like to,but I have a meeting t
11、omorrow.If I got time tomorrow,I would certainly help you.：Thats all right.Thank you all the same.Read and learn:If it should be the Spring Festival tomorrow,I might get some pocket money.If I were to have free time this Friday,I would go to the party.However,Ill attend a meeting that day.What a pit
12、y!If I got time tomorrow,I wouldcertainly help you.If I were to have free time this Friday,I would go to the party.If it should be the Spring Festival tomorrow,I might get some pocket money.Summarize the structure条件从句主句过去式(were/did)should+do were to dowould(might,could,should)+do总结3.Opposite to the
13、future truth与将来事实相反时，主、从句谓语构成如果明天下雨，运动会将会被推迟。If it rained tomorrow,the sports meet would be put off.=If it _tomorrow,the sports meet would beput off.举一反三should rain/were to rainUnreal conditionals with“if”2.If 引导的虚拟条件从句中的结构Consolidation(巩固）:If sb.,(条件句)sb.(主句)Present(现在)Past(过去)Future(将来)did/wereA.h
14、ad donewould/could/should/might doD.would/could/should/might have doneB.did/wereshould dowere to doC.would/could/should/might doOpposite toHave a try!3.If引导的虚拟条件句的省略倒装：(Inverted structures of them)1._ to do the work,I should do it some other day.A.If were IB.I wereC.If I were D.Was I E.Were IIf I we
15、re to do the work,I should do it some other day.=Were I to do the work,I should do it some other day.2._ it rain tomorrow,we would have to put off the visit to the park.A.Were B.Should C.Would D.Will=If it should rain tomorrow,we would have to put off the visit to the park.Should it rain tomorrow,we
16、 would have to put off the visit to the park.3._ for the doctors careful treatment,he _till last year.A.If it is not,cant live B.Were it not,couldnt liveC.If it hadnt been,couldnt have lived D.Had it not been,couldnt have lived E.If they were not,couldnt liveIf it hadnt been for the doctors careful
17、treatment,he couldnt have lived till last year.=Had it not been for the doctors careful treatment,he couldnt have lived till last year在If引导的虚拟条件句中总结should,were 和 had 可以放在句首，这种情况下，if必须省略.1.如果had是实义动词，表示“有”时，则不可以移到句首。正：If we had time to spare,we would go to see a film.误：Had we time to spare,we would g
18、o to see a film.TipIf you had gone to bed earlier last night,you wouldnt be sleepy now.错综时间(mixed time)条件句或混合虚拟语气如果你刚才向右转，你现在就不会有麻烦了。If you _ _ _(turn right)just now,you _(be)in trouble now.had turned rightwouldnt be in4.If引导的混合虚拟语气中：Its hard to image what I would be doing today if I _ in love at th
19、e age of seven,with the Melinda Cox Library in my hometown.A.wouldnt have fallen B.had not fallenC.should fallD.were to fall含蓄条件句：有时假设的情况并不用if条件从句表示，而使用如:but for(要不是),without,with，or,otherwise等一些介词短语，分词结构来代替if条件句,这时剩下的主句要用虚拟语气。虚拟语气其他形式：a)with,without,but for 等介词短语代替条件句相当于 if it is not for“要不是”But fo
20、r the rain,the crops would have died.(=If _)Without the teachers help,he couldnt have made such great progress in English.(=If _)it hadnt been for the rainit hadnt been for the teachers help,b).otherwise,but,or 常把真实情况和虚拟语气混合（重、难点）I was ill that day.Otherwise,I would have taken part in the sports mee
21、ting.（副词）I would have taken part in the sports meeting，but I was ill that day.（连词）He telephoned to inform me of your birthday,or I would have known nothing about it.（连词）I _(give)you more help,but I was too busy.（连词）c)Given more time,we could have done it better.(分词短语)=If_we had been given more time,
22、might have given1.Without your help,we _ such rapid progress.A.couldnt make B.wouldnt makeC.will not have made D.wouldnt have made2.I could have called you for help,but I _ your number.A.couldnt have remembered B.didnt remember C.should have remembered D.hadnt rememberedHomework:1.Have a revision.2.Exercises(p41.116)
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