初中九年級(jí)英語(yǔ)課件Unit When was it invented

Unit6Whenwasitinvented?SectionA1A—2d人教版九年級(jí)英語(yǔ)Lookatthethingsbelow.Inwhatorderdoyouthinktheywereinvented?

A:IthinktheTVwasinventedbeforethecar.B:Ithink…….abcd1876____1885____1927____1971____cbdaListenandmatchtheinventionswiththeyears.Changetherolesandpractice.A:Whenwasthetelephoneinvented?B:Ithinkitwasinventedin1876.一般過(guò)去時(shí)的被動(dòng)語(yǔ)態(tài):1.肯定式主語(yǔ)+

waswere+及物動(dòng)詞的過(guò)去分詞+by.2.疑問(wèn)句WasWere+主語(yǔ)+及物動(dòng)詞的過(guò)去分詞。

Rewritethesesentencesusingthepassivevoice.1.Someonestolemywatch._____________________________.2.Whendidtheyinventthepersonalcomputer?________________________________________.3.Ourteacheraskedusnottotalkinclass._________________________________________.4.ThomasEdisoninventedthelightbulb..Mywatchwasstolenbysomeone.Whenwasthepersonalcomputerinvented?Wewereaskednottotalkinclass.ThelightbulbwasinventedbyThomasEdison.6:Columbusdiscoveredthenewworld.

ThenewworldwasdiscoveredbyColumbus.5.TheytookmanyphotosontheGreatWalllastyear.ManyphotosweretakenontheGreatWalllastyearbythem.ThomasEdisonisagreat_______,He_______manythingsinhislife,Thelightbulbishisgreat_______.Listenandlookattheseinterestinginventions.Doyouthinkwhattheyareusedfor?Whataretheshoeswithlightsusedfor?Ithinkthey________________________.inventorinventedinventionareusedforseeinginthedark

Whataretheshoeswithspecialheelsusedfor?Ithinktheyareusedforchangingthestyleofyourheelsandusedforraisingorloweringtheheels.Whatisthehotice-creamscoopusedfor?Ithink___________________________________.itisusedforservingreallycoldice-cream.

HeyRoy,thesubjectformyschoolis''Smallinventionsthatchanggdtheworld”.Canyouhelpmethinkofaninvention?Withpleasure!TheZipper!Paul;Roy;Isitreallysuchagreatinvention?Thinkabouthowoftenitisusedinourdailylives.youcanseezippersondresses,trousersshoes,bags…almosteverywhere.

Paul;Roy;youdoseemtohaveapoint…Ofcourse!IthoughtaboutitbecauseIsawawebsitelastweek.Thepoineersofdifferentinventionswerelistedthere.ForexampleitmentionedthatthezipperwasinventedbyWhitcombJudsonin1893.Butatthattime,itwasn’tusedwidely.Paul;Sowhendiditbecomepopular?Roy;Around1917.Paul;Roy;Dothefollowingexerises.1.Theblenderisusedfor______(make)bananamilkshake.

makingwasinventeddailyWhowasinventedbyWhatareused3.Electricityisbecomingmoreandmoreimportantinour

（day)lives.4.PaperwasinventedbyCaiLun.(對(duì)劃線部分提問(wèn))

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