仁爱版九年级英语上册课件Unit4Topic1SectionB

1、Unit 4 Amazing ScienceTopic 1 When was it invented?Section B 课件 2Do you know?A:-Whats this in English?B:-Its an ice bridge.11123456-Its made of ice.Choose a number !A: Whats this in English?B: Its a computer desk.A: Whats it made of?B: Its made of wood.A: Whats it used for?B: Its used for holding a

2、computer.Look and learn. be made of . 由.制成(能看出原材料) be made from. 由.制成(看不出原材料,paper, wine, bread等) be used for doing sth 被用来.(用途) hold 容纳,抓住,举办A: Whats the English for this ? B: Its a piece of paper.A: Whats it made from ?B: Its made from wood.A: Whats it used for? B: Its used for writing on.toothbru

3、shes/plastic/brush teethred wine/grapes/drink Practice the above dialogue with your partners.ruler /steel/measuresweater/cotton/keep warmbed/iron/sleeplift/metal/ go up and downink/carbon/ write in1a Look ,listen and say.K: Jane, why are you unhappy?J: Because Im not allowed to play computer games.K

4、: Its bad for you health if you spend too much time on them.J: Maybe youre right.K: Look at this. (Kangkang shows a model to Jane.)J: Wow! A model rocket! Whats it made of ?K: Its made of metal. Do you know what a rocket is used for?J: Sure. Its used for sending satellites or spaceships into space.

5、K: Youre right. Ive learned a lot about spaceships from Mr. Lee and then I made this model rocket. I wish I could go into space some day.J: I hope your dream will come true. Read 1a again. And answer the questions. Why is Jane unhappy? What is bad for our health? Whats the model rocket made of ?d. W

6、hats a rocket used for ?Listen to 2a and fill in the blanks.W: Hi, Kangkang ! whats this?K: Its an MP3 _.W: Er. Whats it _for ?K: Its used for helping us to _ our English.W: _ was it developed ?K: Around _.W: _ _ was it developed?K: It was developed in Korea. Its more_ than a recorder.W: Cool ! Ill

7、buy _,too.playerusedimproveWhen1998Whereusefulone3a A. Listen to the conversations and number the following pictures.2313a B. Listen again and complete the table . InventionItemlaptopcell phonedigital cameraMaterialUsageYearcountryplasticplasticmetal and plasticstudy, work and play communicatetake p

8、hotosaround 19851973around 1975JapanAmericaAmerica3b Work in pairs. Ask and answer questions based on the table in 3a with passive voice. A: What is a laptop made of?B: It is made of plastic. A: Whats it used for?B: It is used for studying. A: When and where was it developed?B: It was developed in J

9、apan in 1985.Example:Focus on the meaning in communication. Dont be afraid of making mistakes. InventionTimeCountry UseDigitalcamera( )1975Americatake photosComputer ( )1946Americahelp to work and studyCellphone ( )1973Americacommunicate Match the pictures with their inventions.213312Then make conve

10、rsations similar to 2a.When was it developed? It was developed in .Where was it developed? It was developed in . Fill in the blanks with the right prepositions.1.The desk is made _ wood.2.The red wine is made _ grapes.3.This delicious cake was made _my mother.4.Glasses is made _ glass.5.That kind of

11、 machine is made _Japan.offromofbyina computer desk a bottle of red wine -Whats this in English?a piece of paper a toothbrush -Whats this in English?a ruler a bottle of ink ink墨水-Whats this in English?a beda sweater -Whats this in English?a towel an MP3 -Whats this in English?You are so lucky!You do

12、nt need to answer any questions ,but you can get 2 points. Congratulations!Grammar The simple past passive voice 一般过去时被动语态一般过去时被动语态表示过去经常性、习惯性被动动作或过去某一时刻发生的被动性动作，与主动语态相比,被动语态中主语是谓语动作的执行者。 被动语态的构成:was/were+ v 过去分词 Bell invented the telephone in 1876. The telephone was invented by Bell in 1876. 主动语态变被

13、动语态的结构图:主语谓语动词过去式宾语时间状语主语谓语动词的过去分词宾语时间状语Complete the sentences with the correct forms of the verbs in the box. You_ to the party last night, werent you? Why didnt you go? 2.The earthquake happened all of a sudden, but luckily the villagers _to a safe place.3.The door_when we arrived, so we _the bell

14、.4. The students _ not to eat or drink in class, but Ruby _ the rule when she started eating a biscuit in science class. 5. The cookies _by the hungry kids in less than 20 minutes, and they really _them. eat, lock, like, ring, invite, break, tell, bring were invitedwere broughtwas lockedrangwere tol

15、dbrokewere eatenliked Decide whether active or passive forms should be used in these sentences. Write the correct forms in the blanks. The telephone _(invent) by Alexander Graham Bell.He_(born) in 1847. Mr. Bell _（work）on the invention of the telephone with Thomas Watson. In 1875, Mr. Bell_(learn) h

16、ow to send musical notes through an instrument similar to a telephone. Finally, the telephone _ (invent) in 1876. The first sentence that _(say) on the telephone by Mr. Bell was “Mr. Watson, come here; I want to see you.” Today the telephone _(use) around the world. was inventedwas bornworkedlearnedwas saidis used was invented用所给词的正确形式填空。 1. T