新目标九年级英语UNIT9SectionA

九年级新目标Unit9Whenwasitinvented?SectionAWhichdoyouthinkisthemostimportantinventionintheworld?Whatelsecanyouthinkof?

TV?telephome?radio?computer?caculator?car?Doyouknowwhattheyare?computerradiotelevisioncalculatortelephonecarLookatthethingsbelow.Inwhatordersdoyouthinktheywereinvented?Numberthem[1-5]52413A：Ithinkthecalculatorwasinventedbeforethecomputer.B:Well.Idon'tthinkso.Ithinkitwasinventedafterthecomputer.Guess:Whenwasitinvented?In1876In1885In1976In1971In19271b.Listenandmatchtheinventionswiththedates.18851976abThecarwasinventedin1885.19711876cd1927e18761885192719711976A:Whenwas

thecarinvented?B:Itwasinventedin1885.orA:Whenwerecarsinvented?B:Theywereinventedin1885.Whatisitusedfor?Whenwasitinvented?Itwasinventedin1976.Whatisitusedfor?Asforme,itisusedformakingPPTandhavingfun.Whatisitusedfor?Itisusedforcounting.calculatorWhataretheyusedfor?Theyareusedforgivinglight.lightbulbsWhatis/are…usedfor?It’s/They’re…usedfor…part2______ShoeswithadjustableheelsIt’susedforscoopingreallycoldicecream.Right.ItwasinventedbyChelseaLanmon._______battery-operatedslippers_______heatedicecreamscoop2a.Listenandnumbertheinventionsintheorder.3122b.Listenagainandmatchtheitemsincolumns.InventionWhowasit/weretheyinventedbyWhatisit/aretheyusedfor?shoeswithadjustableheelsChelseaLanmonscoopingreallycoldicecreambattery-operatedsneakersJayceCoziarandJamieEllsworthseekinginthedarkheatedicecreamscoopJulieThompsonchangingthestyleoftheshoes3a.Hateitorlikeit?

alarmclockcameralightbulbmicrowaveovenplasticbagCanyouthinkofothers?

3b.Pairwork

A:Whatdoyouthinkisthemosthelpfulinvention?B:Ithinkthemosthelpfulinventionisthecomputer.A:Whyisthat?B:BecauseithelpsmesearchtheinformationthatIneed.

Explanation

1.It’susedforscoopingreallycoldicecream.

beusedfor意为“被用来……”,强调用途或作用。e.g.Thedusterisusedforcleaningtherooms.

beusedas意为”被当作……来用”，强调被当作工具或手段来用。

beusedby意为“被……使用，强调使用者。e.g.Thebigboxisusedasatable.Thecarisusedbyourmanager.2.Shoeswith

adjustableheelswereinventedby…(1)with是介词，意为”“具有，持有，带有”。e.g.agirlwithlonghairahousewithablueroof(2)adjustable意为“可调整的，可调节的”。e.g.Ihaveapairofshoeswithadjustableheels.(3)invent是动词，意为“发明，创造”。e.g.Edisoninventedthelightbulb.

invention是名词，“发明，发明物”e.g.Edisonhadabout2,000inventionsduringhislifetime.3.Battery-operatedslipperswereinventedby…operate用法：(1)“操作”e.g.Canyouoperatethecomputer?(2)“起作用，见效果”e.g.Thesleepingpilloperatedatonce.(3)“经营，管理”e.g.Thecompanyoperatestenfactories.(4)“动手术”e.g.Thedoctorwilloperateonhismothernextweek.4.annoyingadj.讨厌的,恼人的(往往指事物)e.g.Howannoyingitis!真讨厌。

annoyedadj.生气的,恼怒的(往往指人)e.g.Myfatherisannoyedwithme.爸爸在生我气。5.helpfuladj.有帮助的,有益的e.g.Mr.Whiteisaveryhelpfulman.构词法：n+ful→adje.g.use+ful→usefulthank+ful→thankfulbeauty+ful→beautifulcare+ful→careful6.Imaginethatyouarealoneontinyisland.

aloneadj.意为“单独的”,不带感情色彩。e.g.Whenhiswifedied,helivedalone.

lonelyadj.意为“孤独的,寂寞的”e.g.Hefeelslonelywhenheisalone.

lonely指地方时表示“荒凉的,偏僻的”e.g.Theoldmanlivesinalonelysmallvillage.7.Ithinkitwouldbebettertohave…(1)would在此处表示“料想或猜想、揣测”，后接动词原形或完成式。e.g.Whatwouldshebedoingthere?(2)Itisbettertodosth…“最好做……“，it是形式主语，动词不定式是真正的主语。e.g.Itisbetterforyoutowalktoschool.Itisbettertodosth…=hadbettertodosth…GrammarfocusWhenwasthecarinvented?Itwasinventedin1885.Whenwereelectricslippersinvented?Theywereinventedlastyear.Whoweretheyinventedby?TheywereinventedbyJulieThompson.Whataretheyusedfor?They’reusedforseeinginthedark.Thepassivevoice一、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.二、被动语态的构成助动词be+及物动词的过去分词

am(is,are)+done一般现在时was(were)+done一般过去时三、被动语态的用法1.不知动作执行者时,常用被动语态.eg.Mybikewasstolenyesterday.ThiscarismadeinAmerican.2.不必要说出动作执行者时,常用被动语态。eg.Romewasnotbuiltinaday.3.为了突出强调动作的承受者时,常用被动语态.eg.Thousandsofbeachesarepolluted.四、主动语态变为被动语态的步骤:

They

speak

English.主语谓语宾语English

isspoken

bythem.主语谓语动词的过去分词宾语(1)主动语态的宾语变成被动语态的主语。(2)主动语态的谓语动词变为被动语态的谓语动词，即”“be+及物动词的过去分词”(be有时态、人称和数的变化)。(3)主动语态的主语变为by的宾语。主动语态变为被动语态的步骤主动语态改被动语态Bellinvented

thetelephonein1876.wasby五、被动语态的时态表示被动语态的时态一般只通过be表现,过去分词不变。例如：一般现在时:Thetreesareplantedbythefarmers.一般过去时:Thetreeswereplantedbythefarmers.现在进行时:Thetreesarebeingplantedbythefarmers.一般将来时：Thetreeswillbeplantedbythefarmers.现在完成时：Thetreeshavebeenplantedbythefarmers.含情态动词的被动语态：Thetreescan(must,should)beplantedbythefarmers.六、被动语态的几种句型：肯定句主语+be+过去分词+(by…)Asweetsongwassungbyheronthestage.否定句主语+be+not+过去分词+(by…)Asweetsongwasn’tsungbyheron