[英語學(xué)習(xí)]虛擬語氣ppt課件

1、虛擬語氣虛擬語氣條件句中的條件句中的虛擬語氣虛擬語氣A真實條件句If a flood happened in the past, there was usually a great loss of life and property. B非真實條件句1 表示與如今現(xiàn)實相反的條件If I were you, I should go and try. If 過去式(were), would/should/ could/might do2表示與過去現(xiàn)實相反的條件 If I had known your telephone number yesterday, I would have telephon

2、ed you. If 過去完成式, would/should/ could/might have done 3 表示在未來不太能夠?qū)崿F(xiàn)的條件If he were here tomorrow, I would speak to him. If it should rain, the crops could be saved.If I were to do the work, I should do it in a different way. 過去式(were)If should do, would/should/ could/might do were to C省略if的條件句Were it

3、necessary, I might go without delay. = If it were necessary.Had you taken my advice, you wouldnt have failed in the exam. = If you had taken my advice.Should I have time, I would call on her. = If I should have time.D錯綜條件句If you hadnt watched TV yesterday, you wouldnt be so sleepy now. 從句yesterday闡明

4、過去，主句now闡明如今 If they had left home early this morning, they would arrive in half an hour. 從句闡明過去，主句闡明未來。 If you hesitated this moment, you might suffer in the future. 從句闡明如今，主句闡明未來 E含蓄條件句1條件暗含在短語中without; but for He would not get such a result without your help. (條件暗含在介詞短語without your help中)2條件可根據(jù)上下

5、文推理出Such mistakes could have been avoided. 條件能夠是if you had been more careful 假設(shè)他更加小心一點的話 3條件用其他方式來表示Suppose you were in my shoes, what would you do ?用suppose/supposing/providing等詞表示if 主語從句中主語從句中的虛擬語氣的虛擬語氣虛擬語氣1. It is 過去分詞thatIt is requested that weshouldget everything ready this evening 命令、建議、要求2. I

6、t is 描畫詞描畫詞that 表示建議或不滿、驚奇等心情。表示建議或不滿、驚奇等心情。essential，important，natural，necessary，possible，strange等。等。 It is necessary that he (should) learn a foreign language(should) + do賓語從句中賓語從句中的虛擬語氣的虛擬語氣I ordered we leave at once. 虛擬語氣1.表示要求、命令、建議、決議等意義的動詞后，that從句用“(should)+ 動詞原形的構(gòu)造一個堅持 insist兩個命令 order comma

7、nd 三個建議 suggest advise propose四個要求 demand request require ask(should) His face suggested that he was ill.His doctor suggested that he should stay in hospital for several days.He insisted that he didnt kill the woman and that he should be set free.暗示,闡明建議堅持說堅持要求insistedI wish I were a bird. I wish th

8、at I had seen her yesterday.I wish you would stay an hour longer. 2. Wish后的虛擬語氣如今 普經(jīng)過去時 ( were/did )過去 過去完成時 ( had done )未來 過去未來時 ( would / could do )表語從句和同表語從句和同位語從句中的位語從句中的虛擬語氣虛擬語氣That was my suggestion that she start early tomorrow. His proposal was that they challenge the other classes to a frie

9、ndly competition. shouldshould虛擬語氣n. (建議、勸告、命令)+ be +that (should) do一個堅持 insist兩個命令 order command 三個建議 suggest advise propose四個要求 demand request require desire一個堅持一個堅持 insistence兩個命令兩個命令 order command 三個建議三個建議 suggestion advice proposal三個要求三個要求 demand request requirement狀語從句中狀語從句中的虛擬語氣的虛擬語氣The teac

10、her treats the pupil as if he were her own child. I felt as though we had known each other for years. It looks as if it might rain. 方式狀語從句as if / though 后的虛擬語氣如今 普經(jīng)過去時 ( were/did )過去 過去完成時 ( had done )未來 過去未來時 ( would / might could do )對比： He looks as if he is young. 他就是年輕He looks as if he were youn

11、g. 實踐上他不年輕目的狀語從句 Please remind me of it again tomorrow in case I (should) forget. She emphasized it again and again, lest he (should) forget. We had a meeting and talked the matter over face to face for fear that there should be any misunderstanding. in case lest should + 動詞原形 for fear that定語從句中的定語從

12、句中的虛擬語氣虛擬語氣 It is time that we did something for the society. It is high time that we should do something for the society.It is (high) time (that) 主語 should + 動詞原形 過去式其他句型中其他句型中的虛擬語氣的虛擬語氣 A If only. If only he knew the answer. If only I could speak several foreign languages！If only you had told me t

13、he truth before. If only 如今 普經(jīng)過去時 ( were/did )過去 過去完成時 ( had done )未來 過去未來時 ( would / could do )Bwould rather, would prefer, would sooner I would rather you left today. I would prefer he didnt stay here too long I would rather I hadnt seen that film yesterday. would rather, would prefer, would sooner如今 /未來 普經(jīng)過去時 ( were/did )過去 過去完成時 ( had done )would rathe