人教版九年级全册英语 Unit12 Life is full of the unexpected. SectionA Grammar focus 4a-4c 教案

Unit 12 Life is full of the unexpected
Section A 3 (Grammar Focus-4c)
一、教学目标：
1.. 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：
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
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
Ⅰ. Revision. Review some main phrases we learned in the last class. Check the homework.
2.把下列短语翻译成英语1. 即将 2. 倒杯咖啡3. 排队等候 4. 起床5. 出去 6. 迟到7. 到时候 8. 闹铃响9. 开始做某事 10. 搭便车
3. Revision过去完成时的构成：had+动词的过去分词
II. Lead-in
T: What happened to you on a bad 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 Find1. 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。
Ⅴ. 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.
VI 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！
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.
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。
板书设计： Unit12 Life is full of the unexpected.
Section A Grammar Focus-4c
When,by the time ,before +从句（一般过去式），主句（过去完成时）
1.When I got to...,I realize.. had left...
2.By the time I got back to ..., the bell had rung
3.Before I got to ...,the bus had already left.