人教版九年级英语下册《nit 9 When was it invented.Section A》课件_31

1、Unit 9 When was it invented?,Section A Period One,invent calculator be used for scoop adjustable,v. 发明；创造 n.计算器 用来做 v. 用勺舀 n. 勺子；球形勺；长柄勺 adj. 可调整的,heel battery operate battery-operate slipper heat,n. （鞋、袜等的）后 跟；(足) 跟 n. 电池 v. 操作；作业 电池供电的 n. 拖鞋 v. 加热；使变热,What are the Four Great Inventions in ancient

2、China?,Do you know?,paper-making 造纸术,compass 指南针,printing 印刷术,gunpowder 火 药,造纸术,印刷术,Look at the things. In what order do you think they were invented?,1a,A: I think the calculator was invented before the computer. B: well, I think the calculator was invented after the computer.,Talk about with your

3、parterner.,Listen and match the inventions with the dates.,1b,_ 1876 _ 1885 _ 1927 _ 1971 _ 1976,d,a,e,c,b,Sample dialogues: A: When was the telephone invented? B: I think it was invented in 1876. A: When was the car invented? B: I think it was invented in 1885. I think it was invented after the tel

4、ephone.,Pairwork,1c,When was the calculator invented? What is it used for? It is used for counting.,What are they used for?,They are used for giving light.,light bulbs,What is/are used for? Its/Theyre used for,part 2,3,1,2,2a,Listen and number the inventions in the order that you hear them.,Listen a

5、gain and match the items with their inventors and uses.,2b,Role play the conversations using the information in the chart above.,2c,Pairwork,Oral Practice,Sentence pattern: Who was it / were they invented by? It was / They were invented by . What is it / are they used for? It is / They are used for

6、.,Grammar,The passive voice 被动语态 语态是表示主语与谓语的关系的。如果主语是动作的执行者，动词要用主动语态；反之，如果主语是动作的承受者，动词就要使用被动语态。 被动语态谓语部分结构为助动词be + 过去分词。,各种句型的被动形式,注意：这里 be 的形式决定了被动语态的时态，其后的过去分词没有变化。,重点内容,肯定句 主语 + be + 过去分词 + (by ) 否定句 主语+ be not +过去分词 +(by ) 一般疑问句 Be +主语+过去分词 + (by )? 特殊疑问句 疑问词 + be +主语 + 过去分词 + (by )?,Maria bough

7、t the book last year. (主动句) The book was bought by Maria last year. When was the book bought by Maria? What was bought by Maria last year?,被动句：,让我们看一看各种句型的主动语态变为被动语态时，到底发生了什么变化？,do/does,is/am/are + done,did,will/ be going to do,was/were + done,will be done,be going to be done,S + was/were +done,S +

8、was/were +not + done,Was /Were +S + done?,S + will not be + done,S + am/is/are going to be done,Am /Is/Are +S + going to be done?,S + am/is/are not going to be done,Will+ S +done?,S + will be +done,Language points,Its used for scooping really cold ice cream. 【经典习题】完成句子： 邮票是用来发送信件的。 Stamps are _ _ _

9、letters. 【要点点拨】be used for doing sth. 表示“被用于干某事”，意思与be used to do sth.相同。 如：The camera is used for taking photos. = The camera is used to take photos.,used for sending,【拓展延伸】 be used as sth. 表示“被用作某物”。如：English is used as the second language in many countries. be used by sb. 表示“被某人使用”，后接动作的执行者。如：The

10、se textbooks are used by students. be / get used to do sth. 表示“习惯于做某事”。如：She is used to running every morning. used to do sth. 表示“过去常常做某事”。如：Miss Li used to dance after work.,Grammar Focus,Quiz,把下列句子改为被动语态。 1. They made these computers in Shenzhen. These computers _ _ in Shenzhen. 2. She bought a ne

11、w bike yesterday. A new bike _ _ by her yesterday.,were made,was bought,3. The students clean the room every day. The room _ _ by the students every day. 4. He will sing a new song at the party. A new song _ _ _ by him at the party. 5. Students cant take the books out of the library. The books _ _ _

12、 out of the library by students.,is cleaned,will be sung,cant be taken,中考真题链接,1. I feel very happy that I _ to be the host. Congratulations! (07 江西) A. choose B. am chosen C. was chosen D. haven chosen 2. Today Chinese _ by more and more people around the world. (07北京) A. was spoken B. is spoken C. spoke D. speak,3(课改实验区考生做) (07重庆) Your hometown has changed a lot Yes. Take a look at these tall buildings. They _ last year A. build