九年级英语上册-Unit-4-Amazing-Science-Topic-1-When-was-it

Unit4AmazingScience

Topic1Whenwasitinvented?SectionD1/19What’situsedfor?It’susedforlisteningtomusic.What’sitmadeof?It’smadeofplastic.Wherewasitinvented?ItwasinventedinKorea.Whenwasitinvented?Itwasinventedin1998.2/19What’situsedfor?It’susedforcommunicatingeasily.What’sitmadeof?It’smadeofplasticandmetal.Wherewasitinvented?ItwasinventedinAmerica.Whenwasitinvented?Itwasinventedin1973.3/19Whatmethoddidyouusetofindyourlostcellphone?GPSislikeaman-madestar.Wecanuseitatanytime,inanyplaceandinanyweathertofindoutourposition.Theearlyexplorersusedthestarsaslandmarkstoknowwheretheywereandinwhichdirectiontheyweregoing.Thismethodworkedwellatnightaslongastheweatherwasgood.Butitdidn’tworksowellduringtherestofthetime.Let’susetheGPS.n.探险者，勘探者4/191.Howdidtheearlyexplorersknowwheretheywere?Theyfoundoutwheretheywerebyusingstars.2.What’sthedisadvantageofusingthestarsasguidingmarks?Itsdisadvantageisthatitdidn’tworkwellwhentheweatherwasbadandthestarscouldnotbeseen.

3.WhatisaGPS?Isitusefultouse?Itislikeaman-madestar.Wecanuseitatanytime,inanyplaceandinanyweathertofindoutourposition.Itisveryuseful.4.WhatdoyouthinktheGPSwillbeusedforinthefuture?…ReadthepassageanddiscussthequestionsonPage88.5/19Keywordsexploreexplorer,mark

findout,in…directionworkwell,aslongastherestofthetimesolve,like,use,theshapeofgreatinventionn.标示，记号，符号v.做记号，做标识Retellit!6/19依据首字母提醒，完成短文。

ThankstoGPS,wecanexactlyknoww_____wearenow.GPSislikeaman-made“star”.Itcanbeu____inanyplaceandanyweatherconditiontofindoutourp________.Inthepast,theearlyexplorershadtousestarsinthes____totellthemwheretheywere,however,thismethoddidn’tworkwellwhentheweatherwasbad.SoGPSisagreatinventionthatcanhelphumanstobettere________ourplanets.hereositionsedkyxploreExercise7/19Grammar

PassiveVoice(Ⅱ)TheradiowasinventedbyGuglielmoMarconiin1895.Whenwasthedigitalcameradeveloped?Wherewasitdeveloped?Whatisarocketusedfor?Itwasdevelopedinthe1970s.ItwasdevelopedinJapan.Itisusedforsendingsatellitesorspaceshipsintospace.8/19Functions

IwishIcouldgointospacesomeday.Ihopeyourdreamwillcometrue.It’ssaidthatheinventedmorethantwothousandthingsduringhislife.Inventingisinterestingandexcitingandeveryonecanbeaninventor.9/19

Passivevoice

was/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.areinventedCBCACGrammarexercise10/191.Youarelate,allthetickets__________(sell)outanhourago.2.Thistypeofcellphone____________(make)inShenzhen.3.I_________________(notinvite)toyesterday’sparty.4.________thosemachines__________(check)thismorning?5.Manytreesandflowers______________(plant)inourschoollastyear,andtheymadeourschoolabeautifulgarden.

weresoldweremadewere/was

+

v.过去分词Exerciseswasn’tinvitedWerecheckedwereplanted11/191.PeopleuseradiostolearnEnglishinthepast._____________________________________________2.Jackwillshowmethephoto.______________________________________________3.TheyhaveraisedmuchmoneyfortheProjectHope.______________________________________________4.IoftenhearMarysingEnglishsongsathome._______________________________________________5.Wemustn’tthrowlitterabout.________________________________________________6.PeoplecanvisitplanetslikeMars._________________________________________________RadioswereusedtolearnEnglishinthepast.Thephotowillbeshowntome.MuchmoneyhasbeenraisedfortheProjectHope.MaryisoftenheardtosingEnglishsongsathome.Littermustn’tbethrownabout.PlanetslikeMarscanbevisited.ChangethefollowingsentencesintoPassiveVoice.12/19()1.Hurryup,you____onthephone.

A.Wanted B.waswanted

C.arewanted(

)2.Somestories_____thechildrenbytheteachereveryday.

A.istoldfor B.aretoldfor

C.aretoldto()3._____thathehasstudiedabroadforfiveyears.

A.Itissaid B.Itsays

C.Thatissaid()4.Thewindow____fiveminutesago.

A.iscleaned

B.wascleaned

C.canbecleaned()5.Thechildren______bytheteachersatschool.

A.takecareof

B.aretakencare

C.aretakencareof

CCABCChoosethebestanswer.13/19()6.Ihavenoideawhat______whileIwasasleep.

A.happened

B.washappened

C.happens()7.Insomecountries,tea_____beforemeals.

A.isserving B.isserved C.served()8.Thiskindofbooks______well.

A.doesn’tsell B.isn’tselling C.aren’tsold.()9.I______tenminutestodecidewhichsentencewasrightbytheteacher.

A.gave B.wasgiven C.wasgiving()10.Teachers______ineverypartoftheworld.

A.areneeding B.areneeded C.willneedABABBPracticemakesperfect.14/19Project(1)ThisisKangkang’sinvention.Lookattheinformationandthepicture.Whatdoyouthinkofit?Discusswithyourpartners.Name:Plar(plan-car)Inventor:KangkangYear:Use:Bothflyinganddriving15/192.Designyourowninvention.Drawapictureofitandwritedowntheinformationaboutit.

Name:____________Inventor:___________Year:_____________Use:______________

Project（2）DescribingYourInvention3.Showthepictureofyourinventionanddescribeittotheclass.

4.Discussingroupstodecidewhichisthemostuseful/interesting/funnyinvention.

16/19WeLearn:

1.Somewords:

mark,explorer

2.Somephrases:findout,in…,direction,

aslongas,work