SectionAPeriodTwoA:Whenwas…invented?B:Itwasinventedin…A:Whowasitinventedby?B:Itwasinventedby…A:Whatisthe…usedfor?B:The…isusedfordoing…192719761885181876Whatisit/aretheyusedfor?It’sanannoyinginvention.BecauseitwakesmeupwhenI’msleeping.alarmclockalarmclockIthinkcomputeristhemosthelpfulinvention.BecauseithelpsmesearchtheinformationthatIneed.computercomputerWhatdoyouthinkisthemosthelpfulorannoyinginvention?3aPairworkMakealistoffivehelpfulinventionsandfiveannoyinginventions.Helpfulinventions:bike,soundproofdoorandwindow,car,computer,faxmachineAnnoyinginventions:air-conditioner,truck,telephone,junkfood,icecreamA:Whatisthis?B:Itisanalarmclock.A:Whatisitusedfor?B:Itisusedforwakingpeopleupinthemorning.A:Doyouthinkitisannoying?B:Sometimes,whenIwanttogoonsleep.A:Whatisthis?B:Itisanalarmclock.A:Whatisitusedfor?B:Itisusedforwakingpeopleupinthemorning.A:Doyouthinkitisannoying?B:Sometimes,whenIwanttogoonsleep.Dialogue1:Dialogue2:A:Whatisthis?B:Itisalightbulb.A:Whatisitusedfor?B:Itisusedforgivinglight.A:Doyouthinkitishelpful?B:Yes,Ithinkso.BecauseIalwaysdohomeworkandreadbooksintheeveningbyitslight.Dialogue2:A:Whatisthis?B:Itisalightbulb.A:Whatisitusedfor?B:Itisusedforgivinglight.A:Doyouthinkitishelpful?B:Yes,Ithinkso.BecauseIalwaysdohomeworkandreadbooksintheeveningbyitslight.A:Whatdoyouthinkisthemosthelpfulinvention?B:Ithinkthemosthelpfulinventionisthelightbulb.A:Whyisthat?B:Well,itgivespeoplemoretimetoworkandplayeveryday.3bPairworkA:Whatdoyouthinkisthemostannoyinginvention?B:Ithinkthemostannoyinginventionistheair-conditioner.A:Whyisthat?B:Well,Ifeeluncomfortableintheroomwithanair-conditioner.A:Whatdoyouthinkisthemostannoyinginvention?B:Ithinkthemostannoyinginventionistheair-conditioner.A:Whyisthat?B:Well,Ifeeluncomfortableintheroomwithanair-conditioner.GroupworkGroupworkWhatwouldyoudoifyouarealoneonatinyisland?Whatwouldyoudoifyouarealoneonatinyisland?Imaginethatyouarealoneonatinyisland.Choosefiveinventionsyouwouldliketohaveontheislandwithyou.Tellthegroupwhatyouchooseandwhy.Imaginethatyouarealoneonatinyisland.Choosefiveinventionsyouwouldliketohaveontheislandwithyou.Tellthegroupwhatyouchooseandwhy.A:I’dliketohavearadiobecauseIcouldlistentomusicallday.B:Yes,butthat’snotgoingtohelpyouleavetheisland.Ithinkitwouldbebettertohave…A:I’dliketohavesomematchesbecauseIcouldlightafiretokeepwarm.B:Yes,butthat’snotgoingtohelpyouleavetheisland.Ithinkitwouldbebettertohaveatelephone.Dialogue1:Dialogue2:A:I’dliketohaveatelescopebecauseIcouldlookfar.B:Yes,butthat’snotgoingtohelpyouleavetheisland.Ithinkitwouldbebettertohaveasignallamp.[teliskəup]信号灯[siɡnəllæmp]Thepassivevoice被动语态语态是表示主语与谓语的关系的。如果主语是动作的执行者，动词要用主动语态；反之，如果主语是动作的承受者，动词就要使用被动语态。被动语态谓语部分结构为助动词be+过去分词。各种句型的被动形式注意：这里be的形式决定了被动语态的时态，其后的过去分词没有变化。重点内容肯定句主语+be+过去分词+(by…)否定句主语+benot+过去分词+(by…)一般疑问句Be+主语+过去分词+(by…)?特殊疑问句疑问词+be+主语+过去分词+(by…)?Mariaboughtthebooklastyear.(主动句)ThebookwasboughtbyMarialastyear.WhenwasthebookboughtbyMaria?WhatwasboughtbyMarialastyear?被动句：让我们看一看各种句型的主动语态变为被动语态时，到底发生了什么变化？时态主动语态被动语态一般现在时一般过去时一般将来时do/doesis/am/are+donedidwill/begoingtodowas/were+donewillbedonebegoingtobedo...
