Unit4OurWorldTopic2I’msuretherearenoUFOs教学引言向学生们介绍了当代科技最流行的几个话题——UFOs,Robots和Internet,让学生们在学习语言材料的过程中复习、巩固状语从句,树立宾语从句的基本概念。中考要求重难点词汇:appear,situation,lazy,while,scientist,if,balloon,seem,dream,real,robot,order,happen,repair,useless,soldier重点短语:taketheplaceof,seemto,callfor,wakesb.up,lookup,payattentionto,beginwith,andsoon,switchon.语法:宾语从句日常交际用语:Couldyoutellmesomethingaboutrobots?Ofcourse.Whenwasthefirstrobotinvented?Itwasinventedin1921.Areyousure?Yes,quitesure./No,I’mnotsure.Howiseverythingthesedays?Imissyouverymuch.Pleasewritetomesoon.What’sthematterwithit?Therobotsmaytaketheplaceofhumansinsomeworksituations.Peopleoftenmistakesomeman-madeobjectssuchasakiteoraballoonforaUFO.Weshouldn’tspendtoomuchtimeontheinternet.Whenyoulookupawordinthedictionary,payattentiontothefirstletteroftheword.要点聚焦----本单元重点扫描课堂小贴1:Kangkang,couldyoutellmesomethingaboutrobots?康康,请给我讲讲关于机器人的情况好吗?【讲解】Couldyou…?或Couldyouplease…?“请您……好吗?”或CouldIplease…?“我可以…吗?”本句型用于请求、允许做某事,语气较婉转、客气。其中句中如含some,something,不必变为any,anything。如:CouldIaskyousomequestions,Mr.Wu?吴老师,我可以问你几个问题吗?类似的句型还有:MayIhavesomewater?Wouldyoulikesomethingtoeat?Willyoupleasegivemesomepaper?课堂小贴2:Butbeforethat,somethinglikerobotsappeared.但是在这之前,像机器人的东西已出现过。【讲解】Appear在这作不及物动词,“出现,呈现”。OncemoreMissLiudidn’tappear.刘老师还没来。Appear作连系动词,意为“似乎”、“看来”、“显得”,其含义近似seem。Appear作系动词可用于以下结构中:(1)appeartodosth.如:Theboyappearedtobeveryfriendlytous.那个男孩对我们显得很友好。Thereappearedtobeonlyoneroom.似乎只有一个房间。(2)appear+adj.(形容词),如:YouappearedalrightwhenIleft.我离开时,你看起来还不错。Theyappearedamusedbythestory.他们听到这个故事显得很高兴。(3)Itappeared/appearsthat…如:ItappearsthatIamwrong.看起来是我错了。课堂小贴3:Robotsmaytaketheplaceofhumansinsomeworksituation.在某些工作中,机器人可以代替人。【讲解】Taketheplaceof…“代替……”,“取代……”如:Tractorshavetakentheplaceofhorsesinvillages.在农村,拖拉机取代了马。Nowgastakestheplaceofcoalincooking.现在,煤气代替煤来做饭。课堂小贴4:Theycanalsodolotsofdangerousworkinsteadofhumans.他们可能代替人类做许多危险的工作。【讲解】Insteadof…复合介词,“代替……:替…”,“而不……”,如:He’llgotoItalyinsteadofFrance.他要去意大利而不去法国。Youshouldbeoutplayinginsteadofworkingindoorsallday.你应该到外边去活动,而不要整天呆在屋子里工作。We’llgobybusinsteadofonfoot.我们坐车去,而不步行去。课堂小贴5:I’msurerobotscandosomeworkbetterthanhumans.【讲解】Sure形容词,“肯定的;确信的”。如:I’msurethathewillhelpus.我相信他会帮助我们的。I’mnotsurewhereIputit.我不确定我把它放在哪儿了。课堂小贴6:Robotscandomanykindsofjobs.机器人能做很多工作。Robotscandohardwork.机器人能做艰苦的工作。【词语辨析】job与work(1)job,“工作”;零工(可数名词),如:Jobsarenoteasytoget.工作不好找。Manymenlosttheirjobs.许多人世间失业了。Ihaveseveraljobstodobeforegoingtobed.我睡觉前还有好几项工作要做。(2)work,“工作”(不可数名词)。如:Tomcannotfindworkinthiscity.汤姆在这个城市里找不到这个工作。Canyoudotheworkalone?这活儿你一个人做得好吗?Fewpeoplelikehardwork.几乎没有人喜欢艰苦的工作。Work可用作动词。如:Thenewworkerworkswell.这...