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1、Welcome to our Welcome to our class!class!Unit 9 When was it invented?SectionA(1a-2c)paper makinggunpowdergnpad(r)printingprinticompasskmpspaper makingCai Luninvented the .=The paper making was invented by Cai Lun.printingprintiBi Sheng invented the . = The printing was invented by Bi Sheng.Otherinv
2、entionscalculatorklkjuleitWhen were they invented?1b Listen and match the inventions Listen and match the inventions with the dates.with the dates.18761885192719711976dabecadbecA A: : When When waswas the _ the _ inventedinvented? ?B: I think it B: I think it was inventedwas invented in in _._.Pairw
3、ork Pairwork (1c:P68)(1c:P68)19761885187619271971high heelsadjustable heelsadjustable 可调整的可调整的ice cream scoop heat 加热加热scoopslippersabatterybatteriesoperate 操作操作Who were they invented by?What are they used for?adjustable 可调整的可调整的operate 操作操作 heat 加热加热ListeningListeningListen and number the invention
4、s in the order that you hear.2a312InventionWho was it/were they invented by?What is/are they used for?shoes with adjustable heelsChelsea Lanmonscooping really cold ice creambattery-operated slippers Jayce Coziar and Jamie Ellsworth seeing in the darkheated ice cream scoopJulie Thompsonchanging the s
5、tyle of the shoesMatchtheinventionswiththeirinventorsanduses.DiscussA: What is used for?B: It is used forItisusedfor(takephoto)Thepanisusedfor(cook)Thekeyisusedfor(openthedoor)takingphotoscookingopeningthedoorThetelephoneisusedfor(talk).talkingThedictionaryisusedfor_(lookup)newwords.lookingupTheclot
6、hesareusedfor_(keep)warm.keeping1. Some useful wordsSuch as: invent be used for heat2.Some useful expressionsWhen was it invented?Who was it invented by?What is it used for?3. Grammar: the Passive Voice：被动语态：被动语态be + done(动词过去分词动词过去分词)The passive voice.被动语态被动语态 英语中动词有主动语态和被动语态两种语态. 主动语态表示主语是动作的执行者,被
7、动语态表示主语是动作的承受者, 在被动语态中动作的执行者有时用by短语表示出来.被动语态的被动语态的构成构成:助动词be+ (及物动词的) 过去分词 一般现在时一般现在时一般过去时一般过去时am (is, are) + donewas (were) + donewill be +done一般将来时一般将来时Bell invented the telephone in 1876. The telephone was invented by Bell in 1876. 主语谓语动词过去时宾语时间状语主语谓语动词的过去分词宾语时间状语主动语态变被动语态的步骤：主动语态变被动语态的步骤：1、主动语态的
8、宾语变为被动语态的主语；、主动语态的宾语变为被动语态的主语；2、主动句的谓语动词变为被动结构；、主动句的谓语动词变为被动结构；3、主动句的主语变为被动句的宾语，由、主动句的主语变为被动句的宾语，由by 引出，当不强调动作的执行者时，常省略。引出，当不强调动作的执行者时，常省略。4.其它成分不变。其它成分不变。The passive voice.被动语态被动语态主动语态改被动语态主动语态改被动语态:Bellinvented the telephone in 1876.wasbyChange the following sentences into passive voice.1.Edisonin
9、ventedthelightbulb（电灯）.Thelightbulb_Edison.2.Studentsliketheirteacher.Theirteacher_bystudents.wasinventedbyisliked3.TheyspeakEnglishinCanada.4.Peopleusedwoodformakingtables.English _ in Canada(by them).Wood_formakingtables.isspokenwasusedExercise1Doyouknowwhenthecomputer_(invent)?2When_theGreatWall_(build)?3Thismachineisusedfor_(make)freshair.4Thesenew_(invent)changedtheworld.5Whoisthe_(invent)ofthetelephone?wasinventedwasbuiltmakinginventionsinventorHomework:1.Finish work book P1042.Find out more interesting and creative inventions.
