1、第 1 页 共 4 页 Important and difficult points(学习重难点)：真实条件句和非真实条件句1条件句有两类，一类是真实条件句，一类是虚拟条件句。2如果假设的情况是有可能发生的，就是真实条件句（Zero conditional）。真实条件句中的谓语用陈述语气。Eg。If it doesnt rain tomorrow, we will go to the par.如果明天不下雨,我们就去公园.3.如果假设的情况是过去或现在都不存在的,或将来不大可能发生的,则是虚假条件句,共有三种情况：Have a try.时间 从句 主句来源:学,科,网 Z,X,X,K与现在事实
2、相反与过去事实相反与将来事实相反5.虚拟条件句的用法1) 表示与现在事实相反的假设和结果(1 st conditional)Eg. _如果我是你,我就会/可能对他说实话.If he had time, he would/could/might go wit h you.如果他有时间,他就会/可能和你一起去._要是我哥哥在这儿,一切都没问题了.2) 表示与过去事实相反的假设和结果(2 nd conditional)Eg. _.如果你按照我的建议去做,你不会/不可能考试不及格 .第 2 页 共 4 页 _如果我上星期有了这笔钱,我就会/可能买辆车 .She would/could/might ha
3、ve telephoned you immediately,if she had won the game.如果她比赛赢了,她就会/可能给你打电话._如果你早来几分钟的话,你就会/可能会见到那个著名的歌唱家 .3) 表示与将来事实可能相反的假设和结果(3 r d conditional)_如果明天是星期天,我就/可能去看我的奶奶.If it were to snow this evening,they would not go out.如果今晚下雪,他们就不出去了._.如果下雨,庄稼就一定/可能有救.6.主,从句的动作发生时间不一致的情况(mixed conditional)有时条件从句中的动
4、作和主句中的动作发生的时间不一致,这时动词的形式要根据它所表示的时间加以调整.Eg. If you had listened to the doctor, you would be all right now.如果你当初听了医生的话,身体现在就好了.(从句动作指过去,主句动作指现在)If you had practiced speaking English more, you would be able to speak it fluently.如果你多练习讲英语,现在就能讲得很流利了.7.非真实条件抓过鱼从句中虚拟语气的倒装形式当表虚拟语气的从句中含有 be ,have should, co
5、uld 四个词时，从句可以进行倒装。倒装的形式是吧这四个词提到句首，将 if 省略，剩下的句子顺序不变。如果我是你，我就会好好学习If I were you, I would study hard.= Were I you ,I would study hard.第 3 页 共 4 页 如果我有足够的时间，我会把这件事做的更好If I had enough time, I would have done it better.= Had I enough time, I would have done it better.如果下雨,庄稼就可能被救.If it should rain,the cr
6、ops would be saved.= Should it rain, the crops would be saved.随堂训练：I. 用括号内所给动词的适当形式填空。1. What will you do if it (rain) tomorrow? We have to carry it on, since weve got everything ready.2. If I had been you then, I him. (not quarrel) with3. If I (see) him tomorrow, I would be very happy. 4. If I aske
7、d him, Im sure he (help) me.5. If Id left sooner, I (be) on time. . 单项填空：真实条件句和虚拟条件句的用法比较。1. If he _ in a day or two, I would wait for him.A. returns B. should have returned C. were to return D. have returned If he_in a day or two, I will wait for him. A. returns B. should have returned C. were to r
8、eturn D. have returned2. If I _ time, I _ a chat with you soon.A. have; will have B. had; will have C. had had; would have had 来源:Zxxk.ComD. have had; would have had If I _time last night, I _a chat with you.A. have; will have B. had; will have C. had had; would have had D. have had; would have had3
9、. If it _this afternoon, well put off the sports meet.A. rain B. rains C. rained D. will rain If it _even a drop this spring, we would have had a better harvest.A. rained B. rains C. had rained D. have rained.1. If I _ you, I _ very happy.来源:Z_xx_k.ComA. were, would be B. am, shall be 第 4 页 共 4 页 C.
10、 were, shall be D. am, would be2. If he had not lost his money, he _ the piano last week.A. would buy B. had boughtC. could have bought D. bought 3. _I known it, I should have told him.A. Have B. Had C. Having D. If 4. _ the clouds, you would find the airplane in the sky easily.A. Were it not for B.
11、 If it were not D. Had it not been for C. If it had not been for5. If I had known that, I _ so.来源:学+科+ 网A. wouldnt do B. wont doC. didnt do D. wouldnt have done6. If it _ so hard, wed go to town.A. isnt raining B. werent rainingC. doesnt rain D. isnt going to rain7. He _ you if you _ to see him that
12、 afternoon.A. might tell, were going B. told, were goingC. might have told, had g one D. should tell, went8. If you had started sooner, you _ there.A. may have got B. might have gotC. shall have got D. must have got9. If we were to be 2oo years old, we _ everything.A. will change B. can changeC. could change D. shall change10. I dont think that I shall fail, but if I _ I would try again.A. fail B. would failC. should fail D. had failed
