unit1Arts第四课时Grammar1课件（人教版选修六）.ppt

虚拟语气Subjunctive Mood (I);陈述语气I went to the theatre yesterday.Jack hadn’t come back home yet. 祈使语气Let’s go.Don’t touch anything on the table until the bell rings.;虚拟语气If I were you,I would not leave her alone.Our teacher suggested that we go to the library this afternoon.;条件句表示主句的条件,分真实条件句 和虚拟条件句 两种。;二. ‘if ’虚拟条件句的概念;三. if Sentence Structure  ‘if ’虚拟条件句的结构;1. 虚拟语气用于条件状语从句中 (1) 表示与现在事实相反的假设, 条件 状语从句中的谓语动词用“过去式(be 动词的过去式用were)”, 而主句中的谓语动词“would / should/ could / might + 动词原形”。 ;What would you do if you won the lottery? If I won the lottery, I would…;If I won the lottery, I would buy an expensive car. ;If I had a lot of money ;If I had a lot of money now, I would travel around the world.;a. If they ____ (be) here, they __________ (take) your advice. b. If the world-war _____ (burst) out again, what _____________ (happen) to our people on earth?;c. If the policeman ________ (be not) in that room, it ________ (be) very dangerous. d. If I ____ (be) in your position, I _________ (ask) for teacher’s help.;2. 与过去的事实相反;If he __________ more carefully, he _________________ the car accident yesterday.;If I ________ how to swim,;a. If Tom ________ (be) more careful in the exam, he ________________ (pass) it already. b. If you _______ (get) up earlier, you ________________ (catch) the first train.;c. If I _______ (meet) you yesterday, we ______________ (go) to the concert together.;3. 与将来事实相反;If he got up early, ;假如他来了, 我们对他说什么呢？;a. If there ________ (be) no natural resource any more, we ___________ (make) use of nuclear power . b. What ____________ (happen) if you ____________ (get up) too late tomorrow?;c. If Robots _____________ (control) the world some day, here ________ (be) no friendship.; 主句与从句的动作发生在不同的时间, 这时主从句位于动词的虚拟语气形式因时间不同而不同, 这叫做混合条件句。 例句中从句与过去事实相反, 主句与现在事实相反 If you had asked him yesterday, you would know what to do now.;If the staff had been more careful, ;条件从句;条件从句;条件从句;二. 虚拟语气在宾语从句中的用法;I wish I w