公开课-虚拟语气在if条件句中的用法课件.ppt

1、精品 如果我有一千万，我就能买一栋房子如果我有一千万，我就能买一栋房子. 我有一千万吗？我有一千万吗？ 没有。没有。 所以我仍然没有房子。所以我仍然没有房子。 如果我有翅膀，我就能飞。如果我有翅膀，我就能飞。 我有翅膀吗？我有翅膀吗？ 没有。没有。 所以我也没办法飞。所以我也没办法飞。 如果把整个太平洋的水倒出，如果把整个太平洋的水倒出， 也浇不息我对你爱情的火也浇不息我对你爱情的火 整个太平洋的水全部倒得出吗？整个太平洋的水全部倒得出吗？ 不行。不行。 所以我并不爱你。所以我并不爱你。精品 These show your good wishes or dreams. It is eviden

2、t that they are not real or they cant come true (表示说话人的愿望、假设、猜测或表示说话人的愿望、假设、猜测或建议，而不表示客观存在的事实。建议，而不表示客观存在的事实。)romantic , unrealistic, best wishes 精品精品英语动词有三种语气，英语动词有三种语气， 陈述陈述语气，祈使语气和虚拟语气。语气，祈使语气和虚拟语气。陈述语气陈述语气 (The Indicative Mood):用来陈用来陈述一个事实，或提出一种看法，有肯定、述一个事实，或提出一种看法，有肯定、否定、疑问或感叹等形式。否定、疑问或感叹等形式。I

3、am not interested in what you said.Have you ever been to France?What a splendid palace!We had many trees planted last year .精品祈使语气祈使语气(The Imperative Mood),用来用来表示请求、邀请、命令、警告或劝告等。表示请求、邀请、命令、警告或劝告等。nLets have a talk.nDont jump in the queue.nOpen the door ,please .精品虚拟语气虚拟语气(The Subjunctive Mood)定义：表示说

4、的话不是事实，或者是不可定义：表示说的话不是事实，或者是不可能发生的情况，而是一种愿望，建议，能发生的情况，而是一种愿望，建议，假设。假设。nIf I were you, I would go there.nI wish I were a bird flying in the sky.nI suggest you should follow your fathers advice .精品Subjunctive Mood 虚拟语气在虚拟语气在if条件句中的用法条件句中的用法精品 If I were a child, I would be happier.精品If he were a bird ,

5、 he could fly in the big blue sky.精品If I had a lot of money, I would buy a villa （别墅）（别墅）. 精品1.If I were a child, I would be happier.2.If he were a bird , he could fly in the big blue sky.3.If I had a lot of money, I would buy a villa .When(时间）Structure (结构） 与_事实相反(现在,过去,未来) If sb_， sb_.Discover1 现在

6、现在 were/did(动词过去式动词过去式）. would/could do(动词原形动词原形) 精品Practice1 Tell what the following people are thinking.Two-year-old: If I _(can) talk, I _(tell) my mother that I hate peas.14 year-old: I _(be) happier if I _(can) drive. 16-year-old: If I _(have) a car, my friends andI_ (go) out every night.19-yea

7、r-old: If I _(have) a lot of money, _(attend) a private(私立的私立的) university. could would tell would be could would attend had had could go精品If you had worked hard ,you would have passed the exam .精品If they had had enough rain last year, they would have gained good harvest.精品If he had driven more care

8、fully yesterday, he would not have had the car accident .精品1.If you had worked hard ,you would have passed the exam .2.If they had had enough rain last year, they would have gained good harvest.3.If he had driven more carefully yesterday, he would not have had the car accident.When(时间）Structure (结构）

9、 与_事实相反(现在,过去,未来) If sb_, sb_.Discover2 过去过去 had done(动词过去分词）动词过去分词） would (not) have done(动词过去分词）动词过去分词）精品Practice 2 1.I _ (study) English when I was a child if I _(know) the importance (重要性重要性)of it. 2.I didnt see your sister at the meeting. If she_ (come), she_ (meet) my brother. 3. Miss Jiang ex

10、plained the homework to the class yesterday. If Judy _(pay) more attention at the time, he_ (not miss) her instructions(介绍介绍). would have studied had known had come would have met had paid would not have missed 精品If it were/ should be fine tomorrow , I would go to see him.精品If I should visit/ were t

11、o visit/ visited the school next time, I would go to the library .精品If they should play/were to play / played better next time , they would not fail again. 精品1.If it should be/were fine tomorrow , I would go to see him.2.If I should visit/ were to visit/ visited the school next time, I would go to t

12、he library .3.If they should play/were to play / played better next time , they would not fail again.When(时间）Structure (结构） 与_事实相反(现在,过去,未来) If sb_, sb_.Discover3 未来未来 would (not) do were/ should be/ should do / were to do / did 精品Practice3 1.If it _ (rain) tomorrow, we _ (not go) out.2. I dont like

13、 exams. If there _ (be) no exam tomorrow, I _ (see) a movie.3. Eason doesnt think he will ever win a singing Competition（比赛）（比赛）. If, by chance, he _ (win), he _ (spend) the prize money on a computer. should rain/were to rain/rained would not go would see would spendwere/should be were to win/should

14、 win/won精品Conclusion 虚拟语气在虚拟语气在if条件句中的用法条件句中的用法When When If sbIf sb_(_(条件句条件句) )Sb _Sb _（主句）（主句）与现在事实相反 与过去事实相反 与将来事实相反 助动词 be用 were 实义动词 do 用 did would should + do sth could mighthad donedid / were should dowere to dowould should + do sth could mightwould should + have done sth could might精品注意点注意点1

15、:省略省略ifif的条件句的条件句有时侯在使用时可省略有时侯在使用时可省略if,句子则可换成下列形式，即句子则可换成下列形式，即“were / had / should +主语主语”。 如如1.If I were a boy, I would join the army.2. If he had taken my advice, he would have succeeded. 3. If it were not for the expense, I would go to Britain. Were I a boy, I would join the army.Had he taken my

16、 advice, he would have succeeded.Were it not for the expense, I would go to Britain.注注: If it were not / had not been for 也是常见的虚拟句也是常见的虚拟句型型, 意思是意思是“要不是要不是” 例如例如:If it had not been for your help, we would not have achieved so much in our work. If it were not for the wise decision, we could not be li

17、ving a happy life.精品注意点注意点2: 时间错综条件句时间错综条件句 当条件状语从句表示的行为和主句表示的行为当条件状语从句表示的行为和主句表示的行为所发生的时间不一致时，动词的形式要根据它所发生的时间不一致时，动词的形式要根据它所表示的时间作相应调整。所表示的时间作相应调整。 If you had followed my advice yesterday, you would be better now.He might be praised now, if he had made rapid progress .精品注意点注意点3: with,without , but

18、for ,but,or,otherwise等形式的等形式的含蓄条件句。含蓄条件句。nWithout air (If there were no air)，there would be no living things. 如果没有空气的话，就不会有生物了。nBut_for your help (If it hadnt been for your help) I couldnt have done it. 要不是你的帮助，我就不可能完成这件事。精品1. Without sunlight, peoples life different from today.2. But for the rain w

19、e _(有有)a pleasant journey today.3. He is not a careful driver; otherwise he (不会撞不会撞) _the tree yesterday.would be should havewouldnt have hit精品注意点注意点4: If only 要是就好了要是就好了(假设假设) If only I knew his name!If only we had followed your advice!If only I could see him again!要是我们的父母能和我们住在一起就好了。要是我们的父母能和我们住在一

20、起就好了。要是我没错过火车就好了！要是我没错过火车就好了！If only our parents could live with us!If only I hadnt missed the train!精品If the God _(give) meanother chance，I_ (tell)the girl three words: I love her! If our love _ (have to) be set a time limit, I wish it _ (be)10,000 years! should /were to give/gave would tellhad to would be 如果上天能够给我一个再来一次的机会，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。我会对那个女孩子说三个字：我爱你。如果非要在这份爱上加上一个期限，我希望是如果非要在这份爱上加上一个期限，我希望是-一万年一万年! 精品Homework1. Review what we have learned today2. Do Ex3 on page5(Students Book)3. Finish all the exercises on page 10-12(金版学案)