初三英語語法 虛擬語氣課件

1、虛擬語氣虛擬語氣分三種情況來掌握：1、虛擬條件句。2、名詞性虛擬語氣。3、虛擬語氣的其他用語。一、虛擬條件句：條件狀語從句是非真實情況，在這種情況下要用虛擬語氣。1、條件從句與現(xiàn)在事實不一致，其句型為：If 主語+過去時，主語+should(could, would, 或might)+動詞原形，如：If I were you, I would study hard.If it rained, I would not be here now.2、條件從句與過去事實不一致，句型為：If 主語+had+過去分詞，主語+should(could, would, 或might)+have+過去分詞，如：

2、If the doctor had come last night, the boy would have saved.If I had not studied hard, I would have failed in the exam last term.3、條件從句與將來事實不一致，句型為：If 主語+shouldwere to+do過去時，主語+should(could.)+原形do，如：If it should rain tomorrow, we would stay at home.If I were to go to the moon one day, I could see it

3、 with my own eyes.If you missed the film tonight, you would feel sorry.二、名詞性虛擬語氣：在表示命令、建議、要求、驚嘆時的名詞性從句中需用虛擬語氣，基本句型：主語+(should)+動詞原形，如：Mother insisted that John go to bed at 9 oclock.(賓語從句)We suggested that the meeting should not be held.It was required that the crops should be harvested at once.(主語從

4、句)The suggestion that he be invited was rejected.(同位語從句)That is their demand that their wages be increased.(表語從句)注意：在這種句子中絕不出現(xiàn)wouldmustcould等。三、虛擬語氣在一些特殊詞中的使用或含蓄條件句：1、wish后的賓語從句：與現(xiàn)在愿望不一致主語+過去時：I wish I were you.與過去愿望不一致主語+had+過去分詞：I wish I had visited the white House when I was in the states.與未來愿望不一

5、致主語+would(could)+原形：I wish I could meet you tomorrow at the party.2、Its time句型：當(dāng)Its time后用that從句時應(yīng)該為“主語+should+原形”或“主語+過去時”，例如：Its time that you went to school. 或Its time that you should go to school.3、If only引起的感嘆句相當(dāng)于“How I wish+賓語從句”：If only he could come! 他要能來就好了。If only I had known the answer! 我

6、要早知答案就好了。4、would rather, as if(though)引導(dǎo)的句子也需使用虛擬，表示過去的情況用過去完成時，表示現(xiàn)在與將來的情況用過去時，如：Id rather you posted the letter right away.Id rather you had returned the book yesterday.She loves the children as if they were hers.Alan talked about Rome as if he had been there.5、without, but, but for, otherwise引起的短語

7、或句子常暗含著含蓄條件：Without you, I would never know him.But for your cooperation, we wouldnt have done the work so well. = If it were not for your cooperation, we wouldnt have done the work so well.(注：without / but for. = If it was not for./ If it hadnt been for.)But that she was afraid, she would have said no.I would be most glad to help you, but I am busy now.I am busy now; otherwise I would do you the favor!4、 “He is a brave man.”“Yes, I wish I _ his courage.”A.have B.had C.will have D.may have5、If it _ rain, the crops would be saved.A.should B.will C