沪教版七年级下册英语Unit6 Electricity节约用电听力课件（可编辑完整版）

主题范畴：人与自然；人与社会主题群：环境保护；科学与技术子主题：环境污染及原因，环保意识和行为；科学技术与工程，人类发明与创造Section1ListeningLearninggoals

学习目标Attheendoftheclass,I’llbeableto:

improvemylisteningcomprehensiveskills,likepredictingthewordsforthemissingpartbeforelistening;

identifyandunderstandkeydetails;

raiseawarenessaboutusingandsavingelectricity.FreetalkWorkinpairsanddiscussthequestions.Leadin“发明”，指世界上原来不存在的事物。“发现”，强调发现已存在但尚未被人所知的事物1.Iselectricityaninventionoradiscovery?[ɪnˈvenʃ(ə)n]n.发明[dɪˈskʌvəri]n.发现Ancient

Greeks(古希腊人)rubbedfuragainstsmoothstone./ˈɪnʃənt//griːks/rubv.磨；搓[rʌb]furn.毛[fɜː]smoothadj.光滑的[smuːð]Thespeedoflightisabout

millionmetrespersecond!3.Howfastdoeselectricitytravel?300传播

[ˈmɪljənz]百万['sekənd]

秒4.Istheelectriccaranewidea?Whenwasitfirstinvented?electriccarsNo,itisn't.in1832.ABritishinventorinventeditCanyoureadthefollowingnumbersinEnglish?2500twothousandandfivehundred300million[ˈmɪljən]meterspersecond3亿米每秒1832eighteenthirty-two30%thirtypercentthesecondhalfofthe19thcentury[ˈsentʃəri]19世纪下半叶[ˈθaʊz(ə)nd][ˈhʌndrəd][pəˈsent]数说天地1.Listentoapodcastaboutelectricityandchoosethebestanswer.ListenActivity1

1.Whofirstdiscoveredelectricity?

A.RobinsonAndersonB.ReubenAndersonC.RobertAnderson

2.Whenwasthefirstelectriccarinvented?

A.1813B.1830C.1832

3.HowmuchelectricityiswastedintheUSAeveryyear?A.30%B.40%C.50%

4.HowmuchelectricityiswastedintheUKeveryyear?

A.billionsofpoundsB.millionsofpoundsC.thousandsofpounds

ListenActivity22.Listentoapodcastaboutelectricityandtick(✓)thetopicsmentionedinit.(1)Whofirstdiscoveredelectricity(2)Howweproduceelectricitytoday(3)Howelectricitytravelstoourhome(4)Whenthefirstelectriccarwasinvented(5)HowmuchelectricityiswastedeachyearintheUKandtheUSA✓✓✓3.Listentotopic1(electricityhistory)andchoosethebestanswer.ListenActivity3

1.Whofirstdiscoveredelectricity?

A.ancientGreeksB.ancientIndiansC.ancientBabylonians

2.Whenwaselectricitydiscovered?

A.250yearsagoB.2500yearsagoC.2000yearsago

3.WhatdidtheyusetodiscoveritElectricity?A.smoothstoneB.branchC.plasticrod

ListenActivity44.Listentotopic2(electricspeed)andchoosethebestanswer.Doyouknowhowfastelectricitytravels?Theansweristhespeedof_________.Thatisabout________________meterspersecond.Anotherinteresting_______isabout________cars.Theyarevery__________now,buttheideaisnotnew.light300millionfactelectricpopular5.Listentotopic3(electriccar

)andchoosethebestanswer.ListenActivity5

1.Whowasthefirstpersontoinventtheelectriccar?

A.RobinsonAndersonB.ReubenAndersonC.RobertAnderson

2.Whenwasthefirstelectriccarinvented?

A.1813B.1830C.1832

3.Whenwillelectriccarbetrulyinuse?A.thesecondhalfofthe19thcenturyB.thesecondhalfofthe18thcentury

C.thesecondhalfofthe18thcenturyListenActivity66.Listentotopic4(thecurrentsituationofelectricitywaste

)andchoosethebestanswer.Butaccordingtoareport,___________ofpoundsofelectricityiswastedeverysingleyearinthe__________.Andanotherreportshowsthatinthe_______,about_____oftheelectricityusedin__________eachyeariswastedbillionsUKUSA30%officeListenActivity7Prediction预测3.Listenagainandcompletethenotes.

Interestingfactsaboutelectricity·ManybelievethatelectricitywasfirstdiscoveredbytheAncientGreeks.Theyproducedelectricitybyrubbingfuragainst(1)________stone.·Electricitytravelsatthespeedof(2)_________whichisabout300millionmetrespersecond.·ABritishinventorbuiltthefirst(3)_________cararound1832,butitwasimpossibletodriveelectriccarsuntilthe(4)________halfof19th.·Reportsshowthat(5)_________ofpoundsofelectricityiswastedintheUKeachyear.IntheUSA,about30%oftheelectricitypeopleusein(6)_________iswastedeachyear.adjn.adjnumn.n.3.Listenagainandcompletethenotes.

Interestingfactsaboutelectricity·ManybelievethatelectricitywasfirstdiscoveredbytheAncientGreeks.Theyproducedelectricitybyrubbingfuragainst(1)________stone.·Electricitytravelsatthespeedof(2)_________whichisabout300millionmetrespersecond.·ABritishinventorbuiltthefirst(3)_________cararound1832,butitwasimpossibletodriveelectriccarsuntilthe(4)________halfof19th.·Reportsshowthat(5)_________ofpoundsofelectricityiswastedintheUKeachyear.IntheUSA,about30%oftheelectricitypeopleusein(6)_________iswastedeachyear.smoothlightelectricsecondbillionsofficeListen

InterestingfactsaboutelectricityGoodevening.Thanksforjoiningmeinthisweek'sTheNaturalWorld.I'mRebecca.Tonight,I'llsharesomeinterestingfactsaboutelectricitywithyou.

Firstofall,asyoumayalreadyknow,electricitywasnotinvented.Itwasdiscovered.Butdoyouknowwhenitwasfirstdiscovered?ManybelievethatelectricitywasfirstdiscoveredbytheancientGreeksmorethan2500yearsago.Theyproducedelectricitybyrubbingfuragainstsmoothstone.Post-listen连读英语听力技巧----连读Next,doyouknowhowfastelectricitytravels?Theansweristhespeedoflight.Thatisabout300millionmeterspersecond.Anotherinterestingfactisaboutelectriccars.Theyareverypopularnow,buttheideaisnotnew.BritishinventorRobertAndersoninventedthefirstelectriccararound1832.However,thiscarwasnotveryuseful.Itwasn’tpossibletodriveelectriccarsuntilthesecondhalfofthe19thcentury.Finally,wearealwaystryingourbesttomakegooduseofthisenergy.Butaccordingtoareport,billionsofpoundsofelectricityiswastedeverysingleyearintheUK.Andanotherreportshowst