虚拟语气227804.ppt

虚拟语气(一) SUBJUNCTIVE MOOD(I) 一. 语气的分类 陈述语气I went to the theatre yesterday.Jack hadn’t come back home yet. 祁使语气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. a.真实条件句 表示条件是真的或有可能实现的,采用陈述语气. b.虚拟条件句 表示条件是无法实现或几乎无法实现的,采用虚拟语气. 2. ‘IF’虚拟条件句的概念 由 ‘if’ 引导的虚拟条件句叫作 ‘IF’虚拟条件句I could easily recognize if I had seen him before. 其他虚拟条件句Without your help,I couldn’t have finished my work on time. 三. IF Sentence Structure ‘IF’虚拟条件句的结构 IF虚拟条件句根据条件所处时态分为三类.a. 表示与现在事实相反 的假设.b. 表示与过去事实相反 的假设.c. 表示与将来事实相反 的假设. PRACTICE 1: Fill in the blanks.   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. PRACTICE 2: Fill in the blanks 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. If he got up early, PRACTICE 3: Fill in the blanks 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,there (be) no friendship . If you had asked him yesterday, you would know what to do now. 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