九年级英语上册 Unit 4 Topic 1 When was it invented Section D课件 （新版）仁爱版.ppt

Unit4AmazingScience Topic2Whenwasitinvented SectionD Haveyouevergotlostsomewhere Whatmethoddidyouusetofindyourdirection Wherearewe Readanddiscussthefollowingquestions 1 Whatwouldyoudoifyouloseyourwayinaforest 2 Howdidtheearlyexplorersknowwheretheywere 3 WhatisGPS Isitusefultous 4 WhatdoyouthinkGPSwillbeusedforinthefuture WhatisGPS GPS即全球定位系统 GlobalPositioningSystem 简单地说 这是一个由覆盖全球的24颗卫星组成的卫星系统 这个系统可以保证在任意时刻 地球上任意一点都可以同时观测到4颗卫星 该观测点可以通过接收到的信号计算出经纬度和高度 以便实现导航 定位 授时等功能 这项技术可以用来引导飞机 船舶 车辆以及个人 安全 准确地沿着选定的路线 准时到达目的地 疑难讲解1 in direction按 朝 方向e g Amotorbikehitatruckintheoppositedirection 2 workwell奏效 起作用e g Themedicineworkedwell 3 aslongas只要 长达e g Youcangoouttoplayaslongasyoufinishyourhomework e g IhavetaughtEnglishaslongasnineyears Readandanswerthequestion Athiefstoleabeautifulcellphonefromayounggirl Heranawayveryquicklyandthenhidinasecretplace Tohissurprise whenhewasusingthecellphone hewascaughtbythepolice Doyouknowwhy BluetoothBluetoothisashortdistancewirelesscommunicationtechnology Itprovidescoverage 覆盖 ofupto100meters It salowpowertechnologythatcanbeusedtoconnectcellphonesorcomputerwithotherdevices Abluetoothheadset 长长见识 根据首字母提示 完成短文 ThankstoGPS wecanexactlyknoww wearenow GPSislikeaman made star Itcanbeu inanyplaceandanyweatherconditiontofindoutourp Inthepast theearlyexplorershadtousestarsinthes totellthemwheretheywere however thismethoddidn tworkwellwhentheweatherwasbad SoGPSisagreatinventionthatcanhelphumanstobettere ourplanets here osition sed ky xplore 当堂检测 Whathaveyoulearntaboutinthistopic Canyousaysomethingaboutoneofthem 1 Rocket2 Cloning3 Robots4 GPS5 Othergreatinventions 1 它是由什么制成的 What sitmadeof from 2 我希望有一天我也能飞到太空 IwishIcouldgointospacesomeday 3 我希望你的梦想能实现 Ihopeyourdreamwillcometrue 4 众所周知 大多数生物体内都有DNA 包括人 Asweknow thereisDNAinmostlivingthings includinghumanbeings 5 没有人确切地知道 但是大多数人认为机器人会成为我们生活的一部分 Nooneknowsforcertain butmostpeoplethinkrobotswillbepartofourlives 6 总而言之 这个机器人对我们很有帮助 Inshort thisrobotisveryusefultous 看谁能根据中文意思快速翻译六个句子 口语比拼 2a Grammarfocus Passivevoice TheradiowasinventedbyGuglielmoMarconiin1895 Whenwasitdeveloped Wherewasitdeveloped Wherewerelaptopsinvented Around1998 ItwasdevelopedinKorea TheywereinventedinJapan 2b Usefulexpressions What sitmadeof from It smadeof from IwishIcouldgointospacesomeday Ihopeyourdreamwillcometrue ThereisDNAinmostlivingthings includinghumanbeings Nooneknowsforcertain butmostpeoplethinkthatrobotswillbepartofourlives Passivevoice被动语态was were done考点探究 1 Abigsupermarket inourcitylastyear A isbuiltB werebuiltC wasbuilt 2 Couldyoutellmewhotheradio by A inventsB inventedC wasinvented 3 Manytreesandflowers inourschoollastyear Theymadeourschoolmorebeautiful A haveplantedB wereplantedC planted 4 Thechildren swimlastmonthandtheycanswimverywellnow A aretaughtB weretaughtC weretaughtto 5 Itissaidthatpotatochips bymistakeaboutonehundredyearsago A wereinventedB inventedC areinvented C B C A C Grammarfocus 被动语态综合练习一 用所给词的适当形式填空 1 Youarelate allthetickets sell outanhourago 2 Thistypeofcellphone make inShenzhen 3 Thestory happen inamagicland 4 Herhomework finish yet sosheisstillworkingonitnow 5 When thesportsmeeting hold 6 Look anewroad build inthatarea 7 Thedirtyclothesmust wash atonce 8 Theroses smell sweet 9 Itiswell know thattheGreatWallisthesymbolofChina weresold weremade happened hasn tbeenfinished willbeheld isbeingbuilt bewashed smell known be的某一时态形式 v 的过去分词 二 将下列句子改为被动语态 1 PeopleuseradiostolearnEnglishinthepast 2 Jackwillshowmethephoto 3 TheyhaveraisedmuchmoneyfortheProjectHope 4 IoftenhearMarysingEnglishsongsathome 5 Wemustn tthrowlitterabout 6 Apolicemanisrunningafterathiefinthestreet 7 PeoplecanvisitplanetslikeMars RadioswereusedtolearnEnglishinthepast Thephotowillbeshowntome IwillbeshownthephotobyJack MuchmoneyhasbeenraisedfortheProjectHope MaryisoftenheardtosingEnglishsongsathome Littermustn tbethrownabout Athiefisbeingranafterinthestreet PlanetslikeMarscanbevisited 三 单项选择 1 Hurryup you onthephone A WantedB waswantedC arewanted 2 Somestories thechildrenbytheteachereveryday A istoldforB aretoldforC aretoldto 3 thathehasstudiedabroadforfiveyears A ItissaidB ItsaysC Thatissaid 4 Thewindow fiveminutesago A iscleanedB wascleanedC canbecleaned 5 Thechildren bytheteachersatschool A takecareofB aretakencareC aretakencareof C C A B C 6 Ihavenoideawhat whileIwasasleep A happenedB washappenedC happens 7 Insomecountries tea beforemeals A isservingB isservedC served 8 Thiskindofbooks well A doesn tsellB isn tsellingC aren tsold 9 I tenminutestodecidewhichsentencewasrightbytheteacher A gaveB wasgivenC wasgiving 10 Teachers ineverypartoftheworld A areneedingB areneededC willneed A B A B B Practicemakesperfect 一 词汇 A 根据所给英汉提示写出单词 1 Whatarethese 牙刷 madeof 2 AteamfromUKwerethefirstto 克隆 ananimalsuccessfully 3 ThelightbulbisoneofEdison s 发明 4 Wouldrobotsliketobehumanbeings 佣人 iftheycanthinkforthemselves 5 Wewillgo 只要 theweatherisgood 话题检测 toothbrushes clone inventions servants aslongas B 根据首字母提示补全单词 6 ClassThreearedoinge inthelab 7 O scientistsfindlifeonMars wewillhaveanewlivinghomeland 8 Hew usnottogooutafteritwasdark fortheroadcoveredwithsnowwasdangerous 9 Weshouldmakeac toprotectingthewildanimals 10 Afterschool studentsshouldhelptheirparentsdosomeh xperiments nce arned ontribution ousework 二 根据汉语提示完成句子 1 Itisbadforyourhealthtoeat 太多 2 Ourcountryhas Chang eI 发射 spacesuccessfully 3 据说 thatJesusChristwasborninabarn 4 到目前为止 wehavefinishedalotofjobs 5 Jim spen 相似 mine 6 Weshouldhavethegoodhabitof 独立思考 7 总而言之 heisagreatastronaut 8 Ibelieveourhopewill 变成现实 toomuch sentinto Itissaid Sofar issimilarto thinkingforourselves Inshort cometrue 三 情景对话 选择正确的应答语 A Hi Juanjuan Whatareyoudoing B IamwatchingTV A B Sorry Idon tknow A That sbecauseofman madesatellites B A Theycansendandreceivemessages Withtheirhelp ChinacansenditsTVandradioprogramstotheothersideoftheworld wecanalsousesatellitestohelpmaketelephonecallstoforeigncountries B Wemuststudyhardtomasterthetechnology a ForeigncountriescansendtheirprogramstoChina b Cantheysendandreceivemessages c Howusefultheyare d Why e DoyouknowwhywecanwatchTVprogramsfromforeigncountries f Whatcantheydo e d f a c 四 用所给词的适当形式填空 Lookatthis itlooks apen butit snota pen It satalkingpen It susedfor usimproveourspokenEnglish Itwas bytheBeijingRen aiEducationInstitutein2007 Wouldyouliketobuy like common helping developed one Writtenwork LookatKangkang sinventionandtheinformation Discussingroupsanddesignyourowninvention Thendrawapictureofit Yourowninvention Information picture