人教版九年级Unit 12 Life is full of the unexpected.-Section A Grammar focus 4a—4c-ppt课件-(含教案+素材)-公开课-(编号：50a5c).zip

Exercises 一、一、用括号里所给词的适当形式填空。 1. When Tim get back home, he started to realize that the thief _ (come) to his house. 2. By the time I received the letter, I _ (tell) the content of it. 3. When I was born, I _ (cry) heavily the first time in my life. 1. had come 2. had been told 3. cried 二、翻译下列句子： 1.当他到达学校的时候，老师已经开始上课了。 2.当我出来的时候，我爸爸已经离开家了。 3.在我拿书包以前我把门锁上了。 4.在她做完作业之前我妈妈已经回来了。 Unit 12 Life 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 of 2）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 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 left her backpack at home. What happened to Mary? 1.1.构成：主构成：主+_+_+_+_ had V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（ pastpast -in-the-past-in-the-past ）”。 7 oclock8 oclock now thethe busbus hadhad leftleftwentwent outsideoutside hadhad leftleft at at homehomegotgot to to schoolschool By 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：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 now past 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 students 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, 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 pastnow the 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，即或完成了的动作或存在的状态，即“过去的过去（过去的过去（ pastpast -in-the-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 Grammar Focus When 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 had 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 bus stop, the bus had already left. 由由when, by the time, before等引导时间状语从句等引导时间状语从句 时，若描述发生在过去的事，主句常用时，若描述发生在过去的事，主句常用过去完成时过去完成时 (had + 过去分词过去分词)表示动作发生在过去的过去。表示动作发生在过去的过去。 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. bebe aboutabout toto do,do, bebe doingdoing等表示即将或正在等表示即将或正在 做某事时，常用做某事时，常用whenwhen引导从句表示突然发生的动引导从句表示突然发生的动 作。作。 4a Make sentences using by the time or before. Before I put cream in the coffee, the coffee had become cold. 1. Tim went into the bathroom. Mary got up. By the time Mary got up, Tim had already gone into the bathroom. 2. The coffee became cold. I put cream (n. 奶 油) in the coffee. _ _ 3. The teacher collected the math homework. I got to school. _ _ 4. I completed the work for my boss. The workday (n. 工作日) ended. _ _ By the time I got to school, the teacher had collected the math homework. I had completed the work for my boss before the workday ended. 5. The movie started. I arrived at the cinema. _ _ 6. My mother finished making the apple pie (n. 果馅 派). I got home from my language course. _ _ _ The movie had started before I arrived at the cinema. By the time I got home from my language course, my mother had finished making the apple pie. 4b Fill in the blanks with the correct forms of the words in the box. 1. By the time I arrived at the party, everyone else _ already _. 2. When he put the noodles into a bowl, he realized he _ to add the green beans (n. 豆). rush out, forget, arrive at, go into, show up (赶到；露面), find out showed uphad had forgotten 3. By the time my mother came back from the market (n. 市馅 ), I _ already _ the door to go for my piano lesson. 4. Before she got to the airport, she _ _ about the earthquake. 5. When she _ the movie theater, she remembered she had forgotten to feed her dog. 6. Before she got a chance to say goodbye, he _ the building. hadrushed out arrived at had gone into had found out 4c Write two true statements and one false statement about your day yesterday. Then ask your classmates to guess the false statement. 1. By the time I left for school in the morning, _ _ _ I had already had breakfast. I had already had supper. I had already had my hair cut. 2. By the end of the school day, _ _ _ 3. By dinner time, I_ I_ I_ 2. By the end of the school day, _ _ _ I have got a present from Tom. I had had these articles read. I had finished my homework. 3. By dinner time, I_ I_ I_ had had too many apples. had eaten plenty of meat. have had all the housework finished. Building a story Each of you need to contribute at least two sentences to the story with one sentence using the past perfect tense. Two weeks ago, when I got home from school, I found that there was no one at home. I was surprised because my grandmother is usually waiting for me. I looked around to see if there was a note, but there was none. . 1.1.复习复习GrammarGrammar FocusFocus 中的内容。中的内容。 TryTry toto makemake sentencessentences withwith beforebefore, , byby thethe timetime andand bebe doingdoing whenwhen, , andand makemake useuse ofof thethe pastpast perfectperfect tense.tense. 2.2. 写作：写作： 描述一次难忘的经历。描述一次难忘的经历。 Section A 3 (Grammar focus-4c) 一、教学目标：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：cream, workday, pie, show up, bean, market, by the end of 2）进行一步复习巩固学习 Section A 部分所学的生词和词组。 3）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。 2）能比较流利地讲述自己曾经有的特别的经历。 二、教学重难点教学重难点 1. 教学重点： 1) 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。 2) 总结过去完成时的不同句型。 3）总结过去完成时的用法。 2. 教学难点：过去完成时的用法 三、教学过程三、教学过程 . Lead-in Teacher talk about the bad things happened on me this morning. T：This morning, I had overslept when the clock 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. What a bad morning! T: What about your morning? Ss 引导学生用过去完成时回答。 III. Grammar Focus. 1. 过去完成时讲解。 2. 学生阅读 Grammar Focus 中的句子，然后做填空练习。 1）当我到达学校的时候， 我才意识到我把书包忘在家里了。 When I got to school, I realized I _ _ my backpack at home. 2）到我返回学校的时候， 铃声已经响过了。 _ _ _ I got back to school, the bell _ _. 3）我到达公共汽车站之前， 汽车已经离开了。 Before I _ _ the bus stop, the bus _ _ _. 4）我决定先买一杯咖啡，然后再准备去办公室， I _ _ _ go up to my office when I decided to get a coffee first. 5）就在我和别的工作人员一起排队等候的时候，听到了一个巨大的声响。 As I _ _ _ _ with the other office workers, I _ _ _ _. Keys: 1. had left 2. By the time , had rung 3. got to, had left 4. was about to 5. was waiting in line , heard a loud sound 3. 学生们根据记忆，看大屏幕来完成填空练习。 4. 学生们完成填空试题后，可以打开课本检查答案，对错误的句子，单独进行 强化记忆。 IV. Try to Find 1. 由 when, by the time, before 等引导时间状语从句时，若描述发生在过去的事， 主句常用过去完成时(had + 过去分词)表示动作发生在过去的过去。 2. be about to do, be doing 等表示即将或正在做某事时，常用 when 引导从句表示 突然发生的动作，when 可省略。 . Practice 1. Work on 4a. Ask Ss to make sentences using by the time or before on their own. 1) Ask five students to the blackboard to write their sentences. 1. Tim went into the bathroom. Mary got up. By the time Mary got up, Tim had already gone into the bathroom. 2. The coffee became cold. I put cream (n. 奶油) in the coffee. _ 3. The teacher collected the math homework. I got to school. _ 4. I completed the work for my boss. The workday (n. 工作日) ended. _ 5. The movie started. I arrived at the cinema. _ 6. My mother finished making the apple pie (n. 果馅派). I got home from my language course. _ 2) Correct their sentences together in class. 2. Work on 4b. 1) Let Ss read the words or phrases in the box and try to understand the meanings of them. 2) Fill in the blanks with the correct forms of the words by themselves. 1. By the time I arrived at the party, everyone else _ already _. 2. When he put the noodles into a bowl, he realized he _ to add the green beans (n. 豆). 3. By the time my mother came back from the market (n. 市场), I _ already _ the door to go for my piano lesson. 4. Before she got to the airport, she _ _ about the earthquake. 5. When she _ the movie theater, she _ remembered she had forgotten to feed her dog. 6. Before she got a chance to say goodbye, he _ the building. 3) Correct their answers together. Work on 4c. 1) Let Ss think about his/her day yesterday. 2) Let them write two true statements and one false statement about their day yesterday. 3) Ask their classmates to guess the false statement. e.g. 1. By the time I left for school in the morning, _. 2. By the end of the school day, _ 3. By dinner time, _ VI. 如果有时间的话，再做以下练习吧！如果有时间的话，再做以下练习吧！ 用括号里所给词的适当形式填空。 1. When Tim get back home, he started to realize that the thief _ (come) to his house. 2. By the time I received the letter, I _ (tell) the content of it. 3. When I was born, I _ (cry) heavily the first time in my life. 1. had come 2. had been told 3. cried 翻译下列句子： 1.当他到达学校的时候，老师已经开始上课了。 2.当我出来的时候，我爸爸已经离开家了。 3.在我拿书包以前我把门锁上了。 4.在她做完作业之前我妈妈已经回来了。 VII. Homework 1. 复习 Grammar Focus 中的内容。Try to make sentences with before, by the time and be doing when, and make use of the past perfect tense. 2. 写作： 描述一次难忘的经历。