九年级英语上册《Module 5 Museums Unit 3 Language in use》课件 （新版）外研版.ppt

Unit3,Languageinuse,1.Noshouting,please!2.Dontcrossthatrope!3.Dontberude!4.IfyouevergotoLondon,makesureyouvisittheScienceMuseum.,Languagepractice,Lookatthefollowingsentences.,1.Noshouting,please!请勿喧哗!Dontcrossthatcrop!不要越过那条绳子！Nophotos.请勿拍照。表示“禁止做某事”的结构，它的主要构成形式有：1)No+动名词e.g.Nosmoking.禁止吸烟。,Languagenotes,Noshouting.请勿喧哗。Nojoking!不要开玩笑！2)No+名词e.g.Nophotos.请勿拍照。Noentry.请勿入内。3)祈使句祈使句同样可以用来表示“禁止做某事”。e.g.Dontmakeanynoise.不要吵闹。Keepoffthegrass.请勿践踏草坪。,1.Matchthesignswiththerules.,1.Noswimming.2.Nofootball.3.Norightturn.4.Noparking.5.Nolittering.6.Nofoodanddrinks.,2.Lookatthesignsandwritetherules.,_,_,_,_,Donttouch.,Nosmoking.,Nophotos.,Noentry.,Lookatthesignsandwritetherules.,Donttouch.,Nophotos.,Nosmoking.,Noentry.,Whatdoeseachsignmean?Writetherules.,Dontdrinkthewater.,Noparking.,Nofire.,Nofoodanddrinks.,Grammar,if引导的状语从句。if引导的状语从句不是指已经发生的事件，而是指能够发生或可能发生的事件。if从句+祈使句，相当于汉语的“如果，就”。1.if从句的构成，例句：Ifyouwanttogo,pleasetellme.如果你想去的话，请告诉我一声。,状语从句,Ifyouwanttoknowmoreaboutit,callnow.如果你想了解更多内容，现在就打电话吧。Ifyouwanttoknowwhattosee,lookattheguide.如果你想知道可参观的内容，就读一下指南吧。if后面通常接一个完整的句子作从句。,2.if从句的位置if引导的从句可以放在主句之前，也可以放在主句之后。例如：IfyouevergotoLondon,makesureyouvisittheScienceMuseum.如果你去伦敦，一定要去参观科学博物馆。可以改写为：MakesureyouvisittheScienceMuseumifyouevergotoLondon.,3.if从句的用法本模块主要学习并运用“if从句+祈使句”这种结构来表达建议。比如说，如果对方生病了，你建议他去看医生，就可以说：Ifyoudonotfeelwell,pleasegotoseethedoctor.你如果感觉不舒服，就去看医生吧。,“禁止做某事”的句型总结,（1）No+v.-ing!Notalking!（2）否定祈使句。Dontjump.（3）情态动词must表示“禁止”。Youmustntplaywithfire.（4）cant表示“不允许”。Youcantmakeanynoise.（5）Youarentallowedto表示“不允许对方做某事”。YouarentallowedtowatchTVathomebeforeyoufinishyourhomework.,祈使句用来表达叮嘱、劝告、希望、禁止、警告、请求或命令等。祈使句最常用来表达命令。,Goandwashyourhands.快去洗手。（命令）Bequiet,please.请安静。（请求）,祈使句,Bekindtooursister.要对我们的妹妹友善。（劝告）Watchyoursteps.走路小心。（警告）Nolittering.不要乱扔垃圾。（禁止）Dontforgettotakeanumbrella.不要忘了带雨伞。（叮嘱）,祈使句的特点：,(1)祈使句一般没有主语，说话的对象都是第二人称“你”或“你们”，所以也可以理解为省略了主语you。祈使句末用句号或惊叹号，句子读时用降调。(2)以动词原形开头，无时态和数的变化。(3)祈使句的否定形式是在动词原形前加dont。,Pleaseclosethedoor.请把门关上。Sitdown,please.请坐。,(4)在表达请求时，可以加上please;表达比较强烈的语气时，可以用感叹号。,Dontworry.Behappy.不要担心，高兴点儿。Dontbringanyfoodordrinkintothelabnexttime.下次不要把任何食物或饮料带到实验室来。Dontforgettoturnoffthelights.不要忘记关灯。,口诀下面的口诀总结了祈使句的一般规律。一起来看看吧!祈使句,有特点,动词原形摆在前,否定句式也不难,Dont放在最前面,其它一律都不变。,3.Completethesentenceswiththecorrectformofthewordsinbrackets.,Ifyou_(want)toseeoldmachines,_(go)tothemuseum.2.Ifyou_(visit)London,_(take)aboattripontheriver.3.Ifthecomputerdoesnot_(start)immediately,_(wait)foroneminute.,want,wait,go,take,visit,start,4.Iftheweather_(get)colder,_(put)onmorewarmclothes.5.Ifanystudent_(have)ahighfever,_(send)him/hertotheschooldoctoratonce.6.Ifyou_(want)toknowhowitworks,_(read)thebook.,put,send,read,gets,has,want,4.Completethesentenceswithyourownideas.,1.IfyoudonotliketheTVprogramme,_.,Ifyouwanttojoinourteam,practisemoreafterclass.,IfyoudonotliketheTVprogramme,_.,turnofftheTV/changethechannel,Completethesentences.,readabookinstead,2.Ifyouwanttoknowwhereyouare,_.,askthepoliceforhelp,Completethesentences.,3.Ifyoucannotarriveatthestationontime,_.,waitforthenexttrain,Completethesentences.,4.Ifyouneedtosendanemail,_.,turnonthecomputer,Completethesentences.,5.Ifyouwanttogo,please_.,Completethesentences.,call,6.Ifyouwanttogoskating,_.,Completethesentences.,wearwarmclothes,7.Ifyouvisitamuseum,_.,Completethesentences.,notshout,notrun,6.Completethesentenceswiththewordsorexpressioninthebox.,at,between,inside,into,nextto,on,1.TheScienceandTechnologyRoomis_thethirdfloor.2.Takethelifttothethirdfloor.Itisoverthere,_thestairs.3.Thereisagarden_thebackofthebuilding.,on,nextto,at,4.Youarenotallowedtogo_themuseumwithoutpaying.5.Theshopis_theticketofficeandthemaindoor.6.Theremustbeanotherway_theroom.,inside,between,into,7.Completethepassagewiththeexpressionsinthebox.,aswell,aswellas,comparewith,lookingforwardto,makesure,payattentionto,Well,hereweareattheScienceMuseum.Todaywewillbelookingatancientandmoderntechnology.Youcanlearnabouthistory(1)_technology.,aswellas,Thatsbecausechangesintechnologyhavechangedtheworld.Please(2)_themachinesortoolsinventedinancientChina.Theyareveryimportantinhistoryandhavechangedtheworldforever.Whenyouwriteyourreportslater,(3)_that