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视频课题：新目标初中英语Unit 12 Life is full of the unexpected. Section A(Grammar focus-4c) 甘肃省 - 兰州
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Unit 12 Life is full of the unexpected. Section A (Grammar focus-4c)
一、教学目标
1.学习掌握下列词汇:cream, workday, pie, show up, bean, market, by the end of.
2.进一步复习巩固学习Section A 部分所学的生词和词组。 3.巩固过去完成时的用法，能运用所掌握的语法，句型和词汇进行交流。
4.能比较流利地讲述自己特别的经历。 二、教学重难点 教学重点
指导学生归纳总结过去完成时的用法以及句型结构。 教学难点
运用学过的语法写出过去难忘的的经历，并能流畅地讲故事。 三、教学方法
1.合作交流、互相帮助。
2.指导学生归类总结语法内容并能运用过去完成时讲述故事。 四、教学过程 1. Revision
Ask some students to retell the story that we learned yesterday. Teacher shares her story --- The unexpected lunch II. Lead-in
T: I made dumplings last Sunday.
I had hurt my hand with knife before 12a.m last Sunday. I had hurt my hand with knife before I made dumplings. Ss: 过去完成时的构成：________________________
过去完成时表示：__________________________ 过去完成时常与_______________等引导的时间状语连用 III. Talk and share.
1.By the time I left for school in the morning, _____________. 2. By the end of the school day, _______________________. 3. By dinner time, _____________________________. IV. Grammar Focus.
1. Ask the students to finish the exercises
(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 ___ ___ ___ ___. 2. Make a summary
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。
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 four students to write their sentences on the blackboard.Correct their sentences together in class. Eg. (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 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. Work on 4b. Let Ss read the words or phrases in the box and try to understand the meanings of them. Then 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.
2.Correct their answers together. VI. Write and share stories.
1.Let Ss think about their sad/interesting/unlucky/exciting/scary day . Then write their unforgettable stories. 2.Ask some students to share their stories. VII. Homework
1.Review Grammar Focus .Try to make sentences with before, by the time and and make use of the past perfect tense. 2.Writing：Describe the most unforgettable experience.
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