新目标九年级Unit9Unit9Whenwasitinvented?SectionAPeriod2Pairwork(3a:P70)Helpfulinventions:vacuumcleaner,soundproofdoorandwindow,car,computer,faxmachineAnnoyinginventions:air-conditioner,truck,telephone,junkfood,icecreamSentencepattern:Whatisthisinthepicture?Whatisitusedfor?Doyouthinkitishelpful/annoying?Dialogue1:A:Whatisthis?B:Itisanalarmclock.A:Whatisitusedfor?B:Itisusedforwakingpeopleupinthemorning.A:Doyouthinkitisannoying?B:Sometimes,whenIwanttogoonsleep.Dialogue2:A:Whatisthis?B:Itisalightbulb.A:Whatisitusedfor?B:Itisusedforgivinglight.A:Doyouthinkitishelpful?B:Yes,Ithinkso.BecauseIalwaysdohomeworkandreadbooksintheeveningbyitslight.Dialogue3:A:Whatisthis?B:Itisamicrowaveoven.A:Whatisitusedfor?B:Itisusedforheatingcoldfoodandcookingmeals.A:Doyouthinkitishelpful?B:Yes,Ithinkso.BecausemyparentsareverybusyandIcanuseittocookmealsbymyself.Dialogue1:A:Whatdoyouthinkisthemosthelpfulinvention?B:Ithinkthemosthelpfulinventionisthevacuumcleaner.Pairwork(4:P70)A:Whyisthat?B:Well,itcanhelpmecleanthefloorwhenmotherasksmetodothecleaning.Dialogue2:A:Whatdoyouthinkisthemostannoyinginvention?B:Ithinkthemostannoyinginventionistheair-conditioner.A:Whyisthat?B:Well,Ifeeluncomfortableintheroomwithanair-conditioner.A:Whatdoyouthinkarethemostannoyingorhelpfulinventions?B:Ithinkthetruckisthemostannoyinginventionandthesoundproofdoorandwindowisthemosthelpfulinvention.Dialogue3:soundproofdoorandwindowA:Whyisthat?B:Thetrucksalwaysmakenoisesandpeoplecan’tsleepwell.Iftheyhavethesoundproofdoorandwindow,peopleneedn’tworryaboutthenoisesanymore.Groupwork(4:P70)Whatwouldyoudoifyouarealoneonatinyisland?A:I’dliketohavesomematchesbecauseIcouldlightafiretokeepwarm.B:Yes,butthat’snotgoingtohelpyouleavetheisland.Ithinkitwouldbebettertohaveacellphone.Dialogue1:A:I’dliketohaveatelescopebecauseIcouldlookfar.B:Yes,butthat’snotgoingtohelpyouleavetheisland.Ithinkitwouldbebettertohaveasignallamp.Dialogue2:Thankyouforlistening!