Unit6 SectionA 1a-1c 课件人教版英语九年级

Unit6

Whenwasitinvented?SectionA1a–1cWhatdoyouknowtheFourGreatInventions

inancientChina?paper-makingprintinggunpowdercompassWarming-upWhenwasitinvented?105B.ConehundredandfiveBC公元前105年Itwasinvented

in……10

48A.Dtenforty-eight公元1048年Ithinkthepaper-makingwasinventedbeforetheprinting.Ithinktheprintingwasinventedafterthepaper-making.Whenwasitinvented?Itwasinvented

in……9thcentury9世纪13

32thirteenthirty-twoIthinkthe_______wasinventedbefore/afterthe____.1四位数读法：每两位数一读。例如：1332thirteenthirty-two1865eighteensixty-five

2千年读法：按数学读法。例如：2000twothousand2008twothousandandeight3前两个数非0的读法：前两位读数+hundred例如：1900nineteenhundred4三位数读法：按数学读法。

例如：635sixhundredandthirty-five.年份读法Whatdoyouthinkwasinventedfirst?ModerninventionspersonalcomputercartelevisiontelephonebulbcameraInwhatorderdoyouthinktheywereinvented?Discussingroups.A:Ithinkthe___wasinventedbeforethe____.B:Well,Ithinkthe____wasinventedafterthe____.Whenwerethecars

invented?Theywereinventedin

1885.Theyweren’tinventedin

1827.18851827√×weren’t

=werenotWhenwasthecarinvented?Itwasinventedin1885.Itwasnotinventedin1827eighteeneighty-fiveeighteentwenty-sevenWhenwerethecomputers

invented?They___________in

1971.They_____________in

1927.19711927wereinventedweren’tinvented√×Whenwasthecomputerinvented?Itwasinventedin1971.Itwasnotinventedin1927.nineteenseventy-onenineteentwenty-sevenListenandanswer:

Whichinventionsaretheytalkingabout?√√√√1b.Listenandmatchtheinventionswiththeyear.______1876______1885______1927______1971dacb再听一遍录音，选择方框中合适的短语完成下面的对话。a.needtotakeahistoryclassb.Myfamilyhadacar.c.havemoderninventionsd.wereinventede.couldn’taffordone.Alice:Wasyourlifeverydifficultwhenyouwereakid?Grandma:Oh,notreally.Why?Alice:Well,youdidn’t___________likeatelephone,right?Grandma:Ofcoursewedid!HowolddoyouthinkIam?Thetelephonewasinventedin1876.You___________,Alice!Alice:Ha,ha!Howaboutcars?Theyweren’tinventedyet,werethey?Grandma:Yes,theywere.Carswereinventedin1885.__________.Alice:Well,didyouhaveaTV?Grandma:No,we_________.Theywereexpensiveinthosedays.TheTVwasinventedaround1927,Ithink.Alice:Well,Iknowthatyoudidn’thaveacomputerbecausewelearnedinschoolthatpersonalcomputers_________in1971.Grandma:You’reright.ButIhaveonenow!cabedA:whatisthemostusefulinvention?B:Thetelephone.A:Whenwasthetelephoneinvented?B:Ithinkitwasinventedin1876.Pairwork1876188519711927Whowasthetelephoneinvented

by?Itwasinvented

byBell.由/被……发明BellBairdWhowastheTVinvented

by?Itwasinvented

byBaird.Whoinventedit?1879EdisonSeeinthedark1839Daguerre[də'ger]

TakepicturesA:Whenwasthe...invented?B:A:Whowasitinventedby?B:A:Whatisitusedfor(被用来…表用途)?B:Itisusedforseeingthedark./itisusedfortakingpictures.Lookandsay针对今天所学的发明，介绍发明者，何时发明的，有何用途等写一篇对话。可用下面的语言结构：

What’sthemostusefulinvention?Whoinventedit?Whenwasitinvented?Whatisitusedfor?writingsample:Moderninventionshavechangedourlife.Ithinkthebulbisthemostusefulinvention.IknowthebulbwasinventedbyThomasAlvaEdison.Itwasinventedin1879.itisusedforseeinginthedark.