1、,虛擬語氣在條件狀語從句中的使用,虛擬語氣是一種特殊的動詞形式,用來表示說話人所說的話不是一個事實，而是一種假設、愿望、要求、命令、建議、猜測等 (多用于條件狀語從句if和讓步狀語從句as if, 賓語從句 that),If I were you, I would study hard. He felt as if he had done something wrong. I wish (that) I were a bird.,條件句可分為真實條件句和虛擬條件句. 1.真實條件句表示句子所描述的事件是事實或可能實現(xiàn)的事情,分為零條件句和第一條件句. 2.虛擬條件句表示與現(xiàn)在或過去的事實相反或

2、不可能實現(xiàn)的事情,分為第二條件句和第三條件句.,表示客觀真理和規(guī)律時，主從句謂語動詞直接用一般現(xiàn)在時的動詞形式.,1.零條件句,Zero Conditional,Eg: If you heat the ice, it turns into water.,真實條件句,P57 Ex.4,P95,2.第一條件句,談論將來可能發(fā)生的事, 主句為將來時，從句用一般現(xiàn)在時.,eg: I wont come if it rains.,First Conditional,P13 EX.6,P95,虛擬條件句,1. the second conditional 與現(xiàn)在/將來事實相反 2.the third co

3、nditional 與過去事實相反,were/did ; would do,if從句,主句,它的基本特點是時態(tài)退后。,had done ; would have done,if從句,主句,P96,與將來情況相反, did should do were to do,would do,P13 EX.5、7、9、11,1.If I were you, I would study harder.,事實上我不可能是你,和現(xiàn)在事實相反.說話者想表達的是表達建議或愿望的語氣.,2. If I won the lottery, I would buy a villa.,對將來的假想和美好愿望,事實上很難實現(xiàn)，

4、與將來事實相反.,3. If she had worked harder, she would have succeeded.,說話者想表達的是愿望或責備的語氣, 暗含事實上她過去肯定沒有努力,和過去的事實相反.,1. If you _a few minutes earlier, you _him. 2. Oh, the weather said it will rain tomorrow. If it _sunny tomorrow, I _come to see you. 3. If I _you, I _go at once.,虛擬語氣在條件從句中,had come,would have met,與過去事實相反,表示惋惜,