九年级英语Unit9.doc

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1、优质课教案Unit 9 When was it invented?西平县师灵中学陈贺香2010年3月22日Unit 9 When was it invented?学习目标：1学会使用含有被动语态的不同句型结构“When/ Where was it invented?” 和“What are they used for?- They are used for doing sth.”来谈论各种发明物的历史。2学习理解被动语态的含义。能够就不同的发明物与他人交流看法，发表自己的见解，并陈述理由。3了解到更多在世界上有重大意义的发明，并向那些伟大的发明家学习。Step one : Vocabulary

2、1基础词汇的掌握。 inventheel slipper scoopbulb microwaveoven sweetsalty crispysour potatochip mistak beverageaccordingancient legend boil produce pleasant bakery abacus century camera 2重点短语：be invented by be used for by mistake be angery with be used toStep two : Dayly spoken English1. - When was the car in

3、vented？ -It was invented in 1985.2. -When were electric slippers invented？ -They were invented last year.3. -Who were they invented by？ -They were invented by Julie Thompson.4. -What are they used for？ -Theyre used for seeing in the dark.Step three : Teaching Section A:1.被动语态谓语动词的语态表示句子的主语和谓语动作之间的关系

4、：1）当句子的主语是谓语动作的执行者时，主、谓之间的关系称为主动语态；2）当句子的主语是谓语动作的承受者时，主、谓之间的关系称为被动语态。 例如： I teach English.（主动语态）我教英语。 Our English is taught by him.（被动语态）我们的英语是由他教的。 He speaks English.（主动语态）他说英文。 English is spoken in many countries all over the world.（被动语态）世界许多国家都讲英语。在被动语态的句子中，谓语部分的结构是be + p.p.（过去分词）。被动语态的句子有时态的变化，这

5、个变化反映在be动词上。也就是说，把一个句子做成被动语态的句子，只需要写出be动词的所需时态，再加上所给动词的过去分词就行了。当然，这只是指谓语部分而言。我们知道，be动词作为一个独立的谓语动词有自己现在分词（being）和过去分词 （been）。那么，下面我们来看看be在各种时态中的变化形式：一般现在时 am / is / are 一般过去时 was / were 一般将来时 shall / will + be 过去完成时 had + been 现在进行时 am / is / are + being过去进行时 was / were + being 现在完成时 have / has + bee

6、n 过去将来时 would / should + be 我们可看看下面的实例： English is spoken in many countries all over the world .（一般现在时） 世界上许多国家都讲英文。 Some TV sets for sale in the department store were stolen last night. 那家商场用来出售的部分电视机昨晚被盗。（一般过去时） He wont be allowed, by his father, to marry Laura. （一般将来时） 他父亲不会让他娶劳拉为妻的。 They would b

7、e sent to the army when they finished the training. 他们结束训练时将被派往部队。（过去将来时） The project is being carried out.（现在进行时） 这个计划正在执行中。 The case was being investigated then.（过去进行时） 那时这案子正在调查中。 This novel has been translated into several languages. （现在完成时）这本小说已被译成了几种语言。 They said that production costs had been

8、 reduced. （过去完成时）他们说生产成本已经下降了。Step four：Doing exercises一、根据开头字母，补全单词1. Do you know who the computer was i _by?2. The seat belt on a plane are a _.3. It was a big m_ to leave my umbrella at home.4. A c_ is a hundred years.5. Boys, stop t_ stones to the poor dog.二、单项选择1. The bridge _ by the farmers th

9、emselves in 1982. A. built B. was built C. build D. was build2. All the books will _ to the children who live in the small village. A. be sentB. sent C. be send D. send3. Keys _ used for _ the doors. A. is, openingB. is, openedC. are, opening D. are opened4. My mother told me that my homework must _

10、 on time. A. finish B. be finish C. be finishedD. finished5. The police found the lost car _. A. with mistakeB. by accidentC. by mistake D. in accident6. I dont like this kind of potato chips because they are not _. A. crispyB. sweetC. soft D. sour7. They decided _ at the end of this month. A. to leave B. going back C. travelD. not stat out8. Its used for _ clearly in the dark. A. seeing B. see C. looking D. look9. When _ the car _? A. did, invent B. was, inventedC. does, invent D. in, invented10. Jack _ leave _ his teacher comes back. A. doesnt, untilB. /, until C. wont, / D. wont, until7