Unit6ElectricityeverywhereListeningP88Whatdoyouknowaboutelectricity?Think1Howmuchdoyouknowaboutelectricity?Discuss

thequestionsinpairs.P88Interestingfactsaboutelectricity(1)Iselectricityaninventionoradiscovery?(2)Howfastdoeselectricitytravel?(3)Istheelectriccaranewidea?Whenwasitfirstinvented?“發(fā)明；創(chuàng)意”，指發(fā)明出世界上原來不存在的事物?！鞍l(fā)現(xiàn)；發(fā)覺”，強(qiáng)調(diào)發(fā)現(xiàn)已存在但尚未被人所知的事物、地方、思想。P882Listentoapodcastaboutelectricityandtick(?)thetopicsmentionedinit.(1)Whofirstdiscoveredelectricity(2)Howweproduceelectricitytoday(3)Howelectricitytravelstoourhome(4)Whenthefirstelectriccarwasinvented(5)HowmuchelectricityiswastedeachyearintheUKandtheUSAGoodevening.Thanksforjoiningmeinthisweek'sTheNaturalWorld.I'm

Rebecca.Tonight,I'llsharesomeinterestingfactsaboutelectricitywithyou.Firstof

all,asyoumayalreadyknow,electricitywasnotinvented.Itwasdiscovered.Butdoyouknowwhenitwasfirstdiscovered?Manybelievethatelectricitywas

firstdiscoveredbytheAncientGreeksmorethan2,500yearsago.Theyproduced

electricitybyrubbingfuragainstsmoothstone!Next,doyouknowhowfastelectricitytravels?Theansweris:thespeedoflight!Thatis,about300millionmetrespersecond!Anotherinterestingfactisaboutelectriccars.Theyareverypopularnow,buttheideaisnotnew.BritishinventorRoberAndersoninventedthefirstelectriccararound1832.However,thiscarwasnotveryuseful.Itwasn'tpossibletodriveelectriccarsuntilthesecondhalfofthe19thcentury.Finally,wearealwaystryingourbesttomakegooduseofthisenergy,butaccordingtoareport,billionsofpoundsofelectricityiswastedeverysingleyearintheUK.

AndanotherreportshowsthatintheUSA,about30%oftheelectricityusedinofficeseachyeariswasted.Thisjustshowshowimportantitistosaveelectricityinourdailylives.That'sallfrommetoday.Ihopeyouenjoyedlearningabitmoreaboutelectricity.聽力材料Activity23Listenagainandcompletethenotes.P88smoothstonelightthefirstelectriccarthesecondhalfofthe19thcenturybillionsofpoundsofficesGoodevening.Thanksforjoiningmeinthisweek'sTheNaturalWorld.I'm

Rebecca.Tonight,I'llsharesomeinterestingfactsaboutelectricitywithyou.Firstof

all,asyoumayalreadyknow,electricitywasnotinvented.Itwasdiscovered.Butdoyouknowwhenitwasfirstdiscovered?Manybelievethatelectricitywas

firstdiscoveredbytheAncientGreeksmorethan2,500yearsago.Theyproduced

electricitybyrubbingfuragainstsmoothstone!Next,doyouknowhowfastelectricitytravels?Theansweris:thespeedoflight!Thatis,about300millionmetrespersecond!Anotherinterestingfactisaboutelectriccars.Theyareverypopularnow,buttheideaisnotnew.BritishinventorRoberAndersoninventedthefirstelectriccararound1832.However,thiscarwasnotveryuseful.Itwasn'tpossibletodriveelectriccarsuntilthesecondhalfofthe19thcentury.Finally,wearealwaystryingourbesttomakegooduseofthisenergy,butaccordingtoareport,billionsofpoundsofelectricityiswastedeverysingleyearintheUK.AndanotherreportshowsthatintheUSA,about30%oftheelectricityusedinofficeseachyeariswasted.Thisjustshowshowimportantitistosaveelectricityinourdailylives.That'sallfrommetoday.Ihopeyouenjoyedlearningabitmoreaboutelectricity.聽力材料Activity34Whatotherinterestingfactsaboutelectricitydoyouknow?Sharethemwithyourclassmates.......YourideasP88Human'sfirstcontactwithelectricitywaselectricfish.Ourbraintransmitssignalsthroughelectricity.BrooklynBridge(inNewYork)wasthefirstbridgepoweredbyelectricity.SpeakingTelevisionAirConditionerWashingMachineHairDryerWhatelectricalappliances(電器)doweuseinourdailylives?...Howcanweuseelectricitysafelyandwisely?ThinkP91S1:Weusedifferentelectricalappliancesinourhomesevery

day.

Howcanweusethemsafely?S2:Weneedtomakesurethatthecables

(n.電纜)

areconnected

correctlybeforeweturnonthedevice.Andwemustn't

touch

anyelectricalapplianceswithwethands.S1:That'sright!Also,wecannotuseanybrokencables....Talkinpairsaboutsafetyrulesforusingdifferentelectricalappliances.Lookattheexampleandusethetipsbelowtohelpyou.TalkingaboutusingelectricitysafelyP91Improvingyourpronunciation英語中一個(gè)元音音素可構(gòu)成一個(gè)音節(jié)。一個(gè)元音音素和一個(gè)或幾個(gè)輔音音素結(jié)合也可以構(gòu)成一個(gè)音節(jié)。只有一個(gè)音節(jié)的單詞稱為單音節(jié)詞；有兩個(gè)音節(jié)的單詞稱為雙音節(jié)詞；有三個(gè)及三個(gè)以上音節(jié)的單詞稱為多音節(jié)詞。音節(jié)take詞尾的e并未發(fā)音，所以都是單音節(jié)詞。eau三個(gè)元音字母在一起，但只發(fā)一個(gè)元音，仍然算一個(gè)音節(jié)。英語輔音音素中/l/是響音，它和輔音音素結(jié)合，也可構(gòu)成音節(jié)。單音節(jié)詞：I

/a?/

hi

/ha?/

take/te?k/雙音節(jié)詞：pencil/?pensl/

unit

/?ju?n?t

多音節(jié)詞：beautiful

/?bju?t?fl/Englishwordscanbedividedintosyllables.Howmanysyllablesdothefollowingwordshave?______________________________________________________Listenandrepeat.P91safepowercomputersupermarketelectricityCompletethetablewiththewordsbelow.Separatethemintosyllableswithhyphens(-).P91cabledangerous exerci