广东省台山市新宁中学九年级英语上册 Unit 4 Amazing Science Topic 1 When was it invented Section D课件 （新版）仁爱版.ppt

keysentencesinsc 1 发明有多种产生方式 2 大多数时候 发明的产生源于有人努力地想解决一个难题 3 有的时候 发明源于偶然 4 但是 他们并没有因此而失去信心 5 在发明的过程中 仔细的计划是很重要的 keysentencesinsc 发明有多种产生方式 inventionscomeaboutinmanyways 2 大多数时候 发明的产生源于有人努力地想解决一个难题 mostofthetime inventionshappenbecausesomeoneworkstosolveaproblem 3 有的时候 发明源于偶然 sometimesinventionsaretheresultofaccidents 4 但是 他们并没有因此而失去信心 buttheyweren tdiscouragedbywhatpeoplesaid 5 在发明的过程中 仔细的计划是很重要的 carefulplanningisimportantintheinventionprocess 的结果 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 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 keysentencesinsd 1 通过星辰 他们可以判断自己身处何方 以及他们去往的方向 2 只要天气好 在能看见星星的晚上 这种方法就很有用 3 我们可以在任何时间 任何地点 任何天气使用它找到我们所在的位置 4 它还可以别用来研究我们地球的形状 5 但在其余的时间这种方法就不适用了 keysentencesinsd 1 通过星辰 他们可以判断自己身处何方 以及他们去往的方向 usingthestars theycouldfindoutwheretheywereandinwhichdirectiontheyweregoing 2 只要天气好 在能看见星星的晚上 这种方法就很有用 thismethodworkedwellatnightaslongastheweatherwasgoodandthestarscouldbeseen 3 我们可以在任何时间 任何地点 任何天气使用它找到我们所在的位置 wecanuseitatanytime inanyplaceandinanyweathertofindoutourposition 4 它还可以别用来研究我们地球的形状 itcanalsobeusedtostudytheshapeoftheearth 5 但在其余的时间这种方法就不适用了 butitdidn tworksowellduringtherestofthetime 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 exercises 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 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 1 somewords mark explorer2 somephrases findout in direction aslongas workwell