78Unit 4 Topic 1 Section D.ppt

Unit4AmazingScienceTopic1Whenwasitinvented SectionD What situsedfor It susedforlisteningtomusic What sitmadeof It smadeofplastic Wherewasitinvented ItwasinventedinKorea Whenwasitinvented Itwasinventedin1998 What situsedfor It susedforcommunicatingeasily What sitmadeof It smadeofplasticandmetal Wherewasitinvented ItwasinventedinAmerica Whenwasitinvented Itwasinventedin1973 Whatmethoddidyouusetofindyourlostcellphone GPSislikeaman madestar Wecanuseitatanytime inanyplaceandinanyweathertofindoutourposition Theearlyexplorersusedthestarsaslandmarkstoknowwheretheywereandinwhichdirectiontheyweregoing Thismethodworkedwellatnightaslongastheweatherwasgood Butitdidn tworksowellduringtherestofthetime Let susetheGPS n 探险者 勘探者 1 Howdidtheearlyexplorersknowwheretheywere Theyfoundoutwheretheywerebyusingstars 2 What sthedisadvantageofusingthestarsasguidingmarks Itsdisadvantageisthatitdidn tworkwellwhentheweatherwasbadandthestarscouldnotbeseen 3 WhatisaGPS Isitusefultouse Itislikeaman madestar Wecanuseitatanytime inanyplaceandinanyweathertofindoutourposition Itisveryuseful 4 WhatdoyouthinktheGPSwillbeusedforinthefuture ReadthepassageanddiscussthequestionsonPage88 Keywords exploreexplorer markfindout in directionworkwell aslongastherestofthetimesolve like use theshapeofgreatinvention n 标示 记号 符号v 做记号 做标记 Retellit 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 Exercise Grammar PassiveVoice TheradiowasinventedbyGuglielmoMarconiin1895 Whenwasthedigitalcameradeveloped Wherewasitdeveloped Whatisarocketusedfor Itwasdevelopedinthe1970s ItwasdevelopedinJapan Itisusedforsendingsatellitesorspaceshipsintospace Functions Passivevoicewas were done 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 Grammarexercise 1 Youarelate allthetickets sell outanhourago 2 Thistypeofcellphone make inShenzhen 3 I notinvite toyesterday sparty 4 thosemachines check thismorning 5 Manytreesandflowers plant inourschoollastyear andtheymadeourschoolabeautifulgarden weresold weremade were was v 的过去分词 Exercises wasn tinvited Were checked wereplanted 1 PeopleuseradiostolearnEnglishinthepast 2 Jackwillshowmethephoto 3 TheyhaveraisedmuchmoneyfortheProjectHope 4 IoftenhearMarysingEnglishsongsathome 5 Wemustn tthrowlitterabout 6 PeoplecanvisitplanetslikeMars RadioswereusedtolearnEnglishinthepast Thephotowillbeshowntome MuchmoneyhasbeenraisedfortheProjectHope MaryisoftenheardtosingEnglishsongsathome Littermustn tbethrownabout PlanetslikeMarscanbevisited ChangethefollowingsentencesintoPassiveVoice 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 Choosethebestanswer 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 Project 1 ThisisKangkang sinvention Lookattheinformationandthepicture Whatdoyouthinkofit Discusswithyourpartners 2 Designyourowninvention Drawapictureofitandwritedowntheinformationaboutit Project 2 DescribingYourInvention 3 Showthepictureofyourinventionanddescribeittotheclass 4 Discussingroupstodecidewhichisthemostuseful interesting funnyinvention WeLearn 1 Somewords mark explorer2 Somephrases findout in direction aslongas workwell therestofthetime beusedto theshapeof3 Somesentences Thismethodworkedwellatnightaslongastheweatherwasgoodandthestarscouldbeseen Wecan 1 Usethepassivevoiceofthesimplepasttensemoreproperly 2 Talka