1、If 條件句

　　If I were you, I would leave now.

　　If you had asked me yesterday, I could have told you.

　　If it should rain tomorrow, we couldnt climb.

　　NOTICE:　錯綜時間條件句（根據所表示的時間調整）

　　If you had followed me, you wouldnt miss the train now.

　　2、主語從句中的虛擬

　　①It is (was) important (necessary, strange ) that-clause

　　Its necessary that you (should) be present at the meeting.

　　②It is (was) ordered (suggested, required, requested) that-clause

　　It was ordered that the room (should) be cleaned.

　　3、wish + that-clause

　　①現在的愿望：I wish that you werent so lazy.

　　②過去的愿望：I wish that you hadnt hurt Jim so much.

　　③將來的愿望：I wish you wouldnt talk like that.

　　--- Have you ever studied French ?

　　--- No, but I wish I had.

　　4、表語從句和同位語從句中的虛擬

　　通常由幾個要求接虛擬語氣的名詞引起：order, demand, suggestion

　　He gave orders that the test (should) be finished before 5:30.

　　His suggestion is that the house (should) be built there.

　　5、賓語從句中的虛擬

　　下列動詞后的賓語從句用虛擬語氣：demand, insist, order, require, etc.

　　The judge ordered that the thief (should) not be punished.

　　NOTICE: ①suggest 暗示，表明

　　Her expression suggested that he was angry.

　　②insist 堅持認為是怎么回事

　　The Arab insisted that he had never seen the camel.

　　He insisted that John (should) do it.

　　6、狀語從句中的虛擬

　　①as if (though)

　　與現在相反，從句用過去時

　　He talks as if he knew everything.

　　與過去相反，從句用過去完成時

　　He looks (looked) as if she had wept.

　　客觀事實，從句用陳述句語氣

　　It looks as if you are tired.

　　②so that, even if (though)

　　Nothing could have saved him even if he had been tended .

　　7、由介詞短語引起的虛擬語氣

　　①without : Without your help, I shouldnt get a result.

　　②but for若非： But for you, we couldnt have carried out the plan.

　　8、句型

　　①Its time + that-clause (指現在或將來）

　　Its time that you went to school .( should go to school)

　　②would rather + that-clause（指現在或將來）

　　Id rather you went home now.

　　Dont come tomorrow, Id rather you came next week.

　　③what if 如果 怎么辦?

　　What if they should come here ?

　　9、虛擬語氣的倒裝

　　Were I you, I would leave now.

　　Had you asked me yesterday, I could have told you.

　　Should it rain tomorrow, we couldnt climb.

1、If 條件句

　　If I were you, I would leave now.

　　If you had asked me yesterday, I could have told you.

　　If it should rain tomorrow, we couldnt climb.

　　NOTICE:　錯綜時間條件句（根據所表示的時間調整）

　　If you had followed me, you wouldnt miss the train now.

　　2、主語從句中的虛擬

　　①It is (was) important (necessary, strange ) that-clause

　　Its necessary that you (should) be present at the meeting.

　　②It is (was) ordered (suggested, required, requested) that-clause

　　It was ordered that the room (should) be cleaned.

　　3、wish + that-clause

　　①現在的愿望：I wish that you werent so lazy.

　　②過去的愿望：I wish that you hadnt hurt Jim so much.

　　③將來的愿望：I wish you wouldnt talk like that.

　　--- Have you ever studied French ?

　　--- No, but I wish I had.

　　4、表語從句和同位語從句中的虛擬

　　通常由幾個要求接虛擬語氣的名詞引起：order, demand, suggestion

　　He gave orders that the test (should) be finished before 5:30.

　　His suggestion is that the house (should) be built there.

　　5、賓語從句中的虛擬

　　下列動詞后的賓語從句用虛擬語氣：demand, insist, order, require, etc.

　　The judge ordered that the thief (should) not be punished.

　　NOTICE: ①suggest 暗示，表明

　　Her expression suggested that he was angry.

　　②insist 堅持認為是怎么回事

　　The Arab insisted that he had never seen the camel.

　　He insisted that John (should) do it.

　　6、狀語從句中的虛擬

　　①as if (though)

　　與現在相反，從句用過去時

　　He talks as if he knew everything.

　　與過去相反，從句用過去完成時

　　He looks (looked) as if she had wept.

　　客觀事實，從句用陳述句語氣

　　It looks as if you are tired.

　　②so that, even if (though)

　　Nothing could have saved him even if he had been tended .

　　7、由介詞短語引起的虛擬語氣

　　①without : Without your help, I shouldnt get a result.

　　②but for若非： But for you, we couldnt have carried out the plan.

　　8、句型

　　①Its time + that-clause (指現在或將來）

　　Its time that you went to school .( should go to school)

　　②would rather + that-clause（指現在或將來）

　　Id rather you went home now.

　　Dont come tomorrow, Id rather you came next week.

　　③what if 如果 怎么辦?

　　What if they should come here ?

　　9、虛擬語氣的倒裝

　　Were I you, I would leave now.

　　Had you asked me yesterday, I could have told you.

　　Should it rain tomorrow, we couldnt climb.