湖北省武汉市北大附中武汉为明实验九年级英语全册《UNIT9WHENWASITINVENTED-SECTIONA》课件人教新目标版

九年级人教新目标Unit9Whenwasitinvented?SectionAWhichdoyouthinkisthemostimportantinventionintheworld?Whatotherscanyouthinkof?

Doyouknowwhattheyare?radiotelevisioncalculatortelephonecar1a.Groupwork

Lookatthethingsbelow.Inwhatordersdoyouthinktheywereinvented?Numberthem[1-5]524131b.Listenandmatchtheinventionswiththedates.

18851976ab19711876cd1927eTelephoneandcar.

Becauseitwasexpensive.

Yes,shedoes.

1c.PairworkIthinkitwasinventedin1976.______ShoeswithadjustableheelsIt’susedforscoopingreallycoldicecream.Right.ItwasinventedbyChelseaLanmon._______battery-operatedslippers_______heatedicecreamscoop2a.Listenandnumbertheinventionsintheorder.3122b.Listenagainandmatchtheitemsincolumns.2c.Pairwork

Whatisitusedfor?Itisusedforseeinginthedark.3a.Hateitorlikeit?

alarmclockcameralightbulbherbicidemicrowaveovenrefrigeratorvediographyingmachineairconditionerplasticbagsCanyouthinkofothers?

3b.Pairwork

4.GroupworkImaginethatyouarealoneonatinyisland.Choosefiveinventionsyouwouldliketohaveontheislandwithyou.A:I’dliketohavearadiobecauseIcouldlistentomusicallday.B:Yes,butthat’snotgoingtohelpyouleavetheisland.Ithinkitwouldbebettertohaveatelephone.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.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.

爸爸在生我的气。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…=hadbetterdosth…GrammarfocusThepassivevoice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.ThiscarismadeinAmerica.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’tsungbyheronthestage.一般疑问句

Be+主语+过去分词+(by…)Wasasweetsongsungbyheronthestage?特殊疑问句

疑问词+be+主语+过去分词+(by…)Wherewasasweetsongsungbyher?Theyproducedthatkindofcar.Theworkersbuiltabridgeovertheriver.Mothertellsmeastoryeveryday.请把下列主动句变为被动句。Thatkindofcarwasproducedbythem.Abridgewasbuiltbytheworkersovertheriver.Iamtoldastorybymothereveryday.1.Thewomanaskedthepolicemanforhelp.2.TheoldmanonTVtellsastoryonSunday.3.Dotheyusetheboxasatable?4.Shesentmeacollectionlastweek.5.Theteacherdoesn’tte