2023學(xué)年完整公開課版人教版Book8Unit5Usinglanguage

Listening,SpeakingandReading

1.ListentoPart1ofthetapeandfillthelayersinthe“wastepaperbasket”diagrambelow.yogurtpotsorangeskinwastepaperusedenvelopesThewastepaperbasketListentoPart2andcompletethepassage.Itusesradioactivitytomeasuretheamountof_______inthelivingthings.The________inadeadbody_________ata____rate.Weknowhowlongthattakes,sowecanmeasuretheamountof______and________howoldaboneis.carboncarbondisappearsfixedcarbonworkoutLookatthisarchaeologicaldrawingofasection

showingbuildingsatdifferenttimesandworkouttheorderinwhichtheywerebuilt.AnswerkeyforExercise3:

TheoldestbuildingisBbecauseithasnolayersunderneathit.ThesecondoldestbuildingisCbecauseithasonelayerunderneathit.ThatlayeristheremainsofthebuildinginB.ThemostrecentbuildingisbuildingA.Ithastwolayersunderneath.

TheyaretheremainsofbuildingsBandC.Part1ZH:Howcanyoutellhowoldthebonesarewhenyoufindthem?LISTENINGTEXT(P42)DATINGMETHODSZhouHepinghascometoaskthearchaeologist,RichardLeakey,howhedatestheboneshefinds.RL:Therearetwomainways:thefirstuseslayersinthegroundandthesecondusestheradiocarbondating.ZH:Isee.Howdoesthelayermethodwork?RL:Well,lookatthediagraminyourbook.Thinkofawastepaperbasket.Whenyoucameintowork,youateanorangeandthrewtheorangeskinintoit.That’slayernumber1.latersomebodythrewsomeyogurtpotsintoit.That’slayernumber2.ZH:Ohyes,andthenIthrewsomepaperintoit.Sothat’slayernumber3.RL:Yes,andfinallysomeonethrewawaysomeusedenvelopes.Sohowmanylayersarethereinthiswastepaperbasket?ZH:Therearefourlayers.RL:Whichlayeristhefirstandthereforetheoldest?ZH:Theorangeskin.RL:Andwhichisthelastandthereforethemostrecent?

ZH:Ofcourse—theusedenvelopes.Iseehowitworksnow.Buthowdoesithelp?RL:Well,layersofsoilareproducedatdifferenttimeslikethelayersinyourwastepaperbasket.Eachtimepeoplelivesomewhere,theymakealayerinthesoil.Iftheylivethereforalongtime,theymakealotoflayers.Eachlayerhasadifferentcolourandtexturewhichweusetofindouthowolditis.ZH:Howsplendid!Part2ZH:Nowwhataboutradiocarbondating?RL:Thisismorescientific.Itusesradioactivitytomeasuretheamountofcarboninlivingthings.Thecarboninadeadbodydisappearsatafixedrate.Weknowhowlongthattakes,sowecanmeasuretheamountofcarbonandworkouthowoldaboneis.ZH:That'sveryclever.Isitaccuratetoo?RL:Therearesomeproblemswithveryoldbones,soyouarealwaysgiventwodates.ZH:Howdoesthatwork?

RL:Well,thedateforabonemaybebetween9,900yearsand10,100yearsold.ZH:Perhapswecouldvisitthesitetogethersometime?

RL:Ofcourse.Wheneveryoulike!

Answerthefollowingquestionsafterreadingthetext:1.WhichjobsdidDahudo?2.WhichjobsdidLalado?3.Whoworkscooperativelyandwhodoestasksalone?4.Whodoesthemostdangeroustasks?5.Wheredoesthedangercomefrom?Reading▲北京猿人的化石首次發(fā)現(xiàn)于1927年▲1929年12月2日發(fā)現(xiàn)第一個(gè)完整的頭蓋骨▲到1937年已發(fā)現(xiàn)的北京人的頭蓋骨共5個(gè)。▲1941年12月太平洋戰(zhàn)爭(zhēng)爆發(fā)后,在幾個(gè)美國(guó)人手里弄得下落不明。▲1966年又發(fā)現(xiàn)一個(gè)殘破的頭蓋骨?！偣舶l(fā)現(xiàn)了屬于40多個(gè)個(gè)體的北京人化石。時(shí)間距今約七十萬(wàn)年至二十萬(wàn)年。北京人

北京猿人的特征●能夠制造和使用勞動(dòng)工具●能使用天然火●擺脫了雜交的婚姻形態(tài)●生活艱苦，壽命比較短暫北京人頭蓋骨化石

北京猿人復(fù)原圖北京人使用過(guò)的石器北京人石器制作法北京人生活想象圖山頂洞人▲距今時(shí)間：18000年前▲地點(diǎn):北京周口店龍骨山山頂洞穴▲體形:同現(xiàn)代人大體一樣，腦容量：

1300——1500毫升▲生產(chǎn)和生活：開始采用磨制和鉆孔技術(shù)制造石器、骨器制造骨針,縫制獸皮衣服產(chǎn)生了原始宗教儀式過(guò)著氏族公社的生活山頂洞人頭骨山頂洞人1933年北京市房山縣周口店龍骨山山頂洞出土。骨針長(zhǎng)8.2厘米，孔徑0.31-0.33厘米。這是中國(guó)已發(fā)現(xiàn)的時(shí)代最早的骨針之一，其針身保存完好，針孔處破裂，針尖銳利，表面有刮磨痕跡。針孔是用尖狀器刮挖而成。山頂洞人的生活用具——骨針Sampleanswerstoabovequestions:1.catchfish,repairstonetools,makescrapersandaxe-heads.2.collectfruitandnuts,preparefood.3.Bothmenandwomenworkcooperatively.Forexample,Lala'smotherandauntswerepreparingthemeatofdeerandpigoverthefire.Mendotasksalone.4.Mendothemostdangeroustasks.5.Thedangercomesfromthewildanimals.AnswerkeyforExercise3Men’stasks:

patient(toolmaking),dangerous(hunting),someindividual(toolmakingandrepairing)andsomeco-operative(hunting),skilful(toolmaking),protective(ofgroup)Women’stasks:

co-operative(cooking),caring(providingfood),patient(collectingfood),skilful(cooking),individual(collectingnutsandfruit)Co-operativetasks:Whenmengohuntingorwomendoingcookingandpreparingfood,theyworkco-operatively.Whenmenmakeorrepairtools,orwomencollectfruitandnuts,theyworkalone.AnswerkeyforExercise4Wherethedangercomesfrom:wildanimalslivingnearthecavesMostdangeroustasks:Huntinganimalsdonebymenmenandwomenhadclearlydividedtasks:fireandcollectingnutsneededtobedoneeverydaybutkillinganimalswouldonlybedonenowandthen.Sothewomen'staskswerecontinuousandthemen'stasksweremoreperiodic.

Sharingoftasks: Nothaving___________andplannedbetter,Lalafeltveryworriedaboutthepreparationsforherfeast.Sosheturnedforhomequicklywithher________ofnuts,melonsandotherfruit.根據(jù)課文內(nèi)容填空。lookedaheadcollectionWhenshewasnearhome,adelicioussmell_______herprogressandshebecamedizzywithhunger.Shesawhermotherandaunts_________thedeerandpigmeatoverthefire.JustthenDahu,her________,aswellasthebest________,camebackwithseveral____.arrestedpreparinghusbandtoolmakerfishLaterhebeganhistask:he_________hisscrapersuntiltheyweresharpenoughto______themeatandtoscrapethefish.Soon,thefirstoftheguestsbegantoarrive.Lalahopeditwasgoingtobejustaswonderfulaslastyear!cutupsharpenedWordsandexpressions

1.Ifonlyitcouldbejustlikelastyear!

要是能像去年那樣就好了!Ifonly但愿;要是……就好了。其后一般用虛擬語(yǔ)氣。

Ifonlyshehadlookedaheadandplannedbetter.Ifonlyhehadcome．

v.toexpressapprovalof(someoneorsomething)especiallybysuchclapping.贊賞,鼓掌向(某人或某物)

表示贊賞,尤指鼓掌歡呼

Everyoneapplaudedwhentheplayended.

演出結(jié)束時(shí),大家都熱烈鼓掌。

Iapplaudyourdecision.

我贊成你的決定。2.applaud:3.accelerate

a.toincreasethespeedof

加速,促進(jìn)加快…...的速度

這部新車加速效能良好。

Thenewcarhasgoodacceleration.

b.tocausetohappenearlier(正式)催促

他決定加快他的課程進(jìn)度。

Hedecidedtoacceleratehiscourses.

tocaptureandholdbriefly(theattention,forexample);engage引起注意吸引并短時(shí)間吸引住(如注意力);吸引

花的艷麗色彩引起蘇珊的注意。

ThebrightcolorsoftheflowersarrestedSusan’sattention.

4.arrest:

havingawhirlingsensationandatendencytofall眩暈的,眼花的感到眩暈并要摔倒的

adizzyheight

令人暈眩的高度

Theoldwomanwasdizziedbythestrongwind.

那位老太太被風(fēng)吹得頭昏眼花。

Thedisasterdizziedhisbrain.

那場(chǎng)災(zāi)難弄得他頭腦昏亂。

5.dizzy:

6.Abruptlyshesatdown,onlytobescoopedupbyherlaughing,shoutingsister,Luna.[考點(diǎn)]onlytodo是不定式作結(jié)果狀語(yǔ)，表示意料之外的結(jié)果。[考例]Hehurriedtothebookingofficeonly______thatalltheticketshadbeensoldout.(陜西2006)A.tobetold B.totellC.told D.telling[點(diǎn)撥]tell與句子的主語(yǔ)he之間構(gòu)成邏輯上的動(dòng)賓關(guān)系。1.Thepolicehavea______twosuspectsinconnectionwiththebankrobbery.2.The__________(放射性的)wasteshouldbeburieddeepunderthegroundinsealedboxes.I.根據(jù)下列各句句意及所給單詞的首字母或漢語(yǔ)提示,寫出各單詞的正確形式。rrestedradioactive練習(xí)坊3.Thedriversteppedonthegasanda_________thecar.4.Americansinmyneighborhoodusedtomaketheirown______(酸乳酪).5.Thenewmethodcaughtonandmanypeasantsbecamevery______(熟練的)atit.cceleratedyogurtskilful6.Itwassohotintheroomthatshefelt____(目眩的).7.Theaudiencea_________thesingerforthreeminutesforhisexcellentperformance.dizzypplauded1.Generallyspeaking,preparations___theBeijingOlympicsaresmoothlymarchingforwardinaccordancewithplans.2.Twentyyearsagopeoplelooked_____andthoughttheproblemwouldbesolvedbynow,butthatclearlyhasn’thappened.II.用適當(dāng)?shù)慕?、副詞填空。forahead3.Huntingspidersrunafterinsectsorlie__waitforthem.4.Shescooped__ahandfulofsnowandpressedithardtomakeaball.5.Hebangedhishead______thewall.inupagainst6.Ismiled__myselfandstoppedworkingso