unit 12 Grammar 课件.ppt
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1、Unit 12Life is full of the unexpected.Section A(Grammar Focus 4c)一、教学目标:一、教学目标:1.语言知识目标:语言知识目标:1)学习掌握下列词汇:学习掌握下列词汇:cream,workday,pie,show up,bean,market,by the end of2)进行一步复习巩固学习)进行一步复习巩固学习Section A 部分所学的生词和词组。部分所学的生词和词组。3)巩固过去完成时的用法)巩固过去完成时的用法2.情感态度价值观目标:情感态度价值观目标:1)能运用所掌握的语法,句型和词汇进行交流。)能运用所掌握的语法,句
2、型和词汇进行交流。2)能比较流利地讲述自己曾经有的特别的经历。)能比较流利地讲述自己曾经有的特别的经历。二、教学重难点二、教学重难点1.教学重点:教学重点:1)复习巩固复习巩固Section A 部分所学的生词和词组,达到熟练运用的目标。部分所学的生词和词组,达到熟练运用的目标。2)总结过去完成时的不同句型。总结过去完成时的不同句型。3)总结过去完成时的用法。)总结过去完成时的用法。2.教学难点:教学难点:过去完成时的用法过去完成时的用法What a bad morning!What about your morning?First,I had overslept when the clock
3、 went off.Then by the time I made the banana pie,I had hurt my finger with a knife.Before I went to school,I had bandaged my finger up.By the time she got up,her brother had already gotten in the shower.By the time she went outside,the bus had already left.When she got to school,she realized she had
4、 left her backpack at home.What happened to Mary?1.1.构成:主构成:主+_+_+_+_hadV过去分词过去分词2.2.过去完成时常与过去完成时常与_等等引导的时间状语连用。引导的时间状语连用。when,by the time,before,by 过去完成时过去完成时表示在过去某个时间或动作之前已经发生表示在过去某个时间或动作之前已经发生或完成了的动作或存在的状态,即或完成了的动作或存在的状态,即“过去的过去(过去的过去(past-in-the-past past-in-the-past)”。7 oclock8 oclock nowthe bu
5、s had leftthe bus had leftwent outsidewent outsidehad left at homehad left at homegot to schoolgot to schoolBy the time she went outside,the bus had already left.When she got to school,she realized she had left her backpack at home.pastpast in pastnow一般过去时一般过去时表示在表示在过去过去某时发生的动作或存某时发生的动作或存在的状态。在的状态。例
6、:例:We started to learn English 5 years ago.我们五年前开始学英语。我们五年前开始学英语。对比一般过去时与过去完成时一般过去时与过去完成时5 years ago nowpast now 1)在以上的时间状语从句中,主句和从句的动作是同时发)在以上的时间状语从句中,主句和从句的动作是同时发生,或者是在进行一个动作时,另外一个动作突然发生。生,或者是在进行一个动作时,另外一个动作突然发生。2)主从句都用一般过去时态的时间状语从句引导词有)主从句都用一般过去时态的时间状语从句引导词有(when,as)等)等When he came in,the student
7、s stood up.When the baby saw her mother,she stopped crying.He was about to watch a movie when his parents knocked at the door.They were about to get on the bus when they heard someone shout.As I was standing in front of the teachers office,I saw a boy fight with another boy.As he was doing housework
8、,a bird flew into the kitchen.思考与讨论:思考与讨论:1.在以下的时间状语从句中,主句和从句的动作是先后发生还在以下的时间状语从句中,主句和从句的动作是先后发生还 是同时发生?是同时发生?2.主从句都用一般过去时态的时间状语从句的引导词有什么?主从句都用一般过去时态的时间状语从句的引导词有什么?pastpast in pastnowthe bus had leftwent outside past now 5 years agonow过去完成时过去完成时表示在过去某个时间或动作之前已经发生表示在过去某个时间或动作之前已经发生或完成了的动作或存在的状态,即或完成了的
9、动作或存在的状态,即“过去的过去(过去的过去(past-in-the-past past-in-the-past)”。一般过去时一般过去时表示在表示在过去过去某时发生的动作或存在的某时发生的动作或存在的状态。状态。一般过去时与过去完成时一般过去时与过去完成时GrammarFocusWhen I went to school,I realized that I had left my backpack at home.By the time I got back to school,the bell had rung.Before I got to the bus stop,the bus ha
10、d already left.I was about to go up to my office when I decided to get a coffee first.As I was waiting in line with the other office workers,I heard a loud sound.When I got to school,I realized that I had left my backpack at home.By the time I got back to school,the bell had rung.Before I got to the
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