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?！?941年12月太平洋戰(zhàn)爭爆發(fā)后,在幾個美國人手里弄得下落不明。▲1966年又發(fā)現(xiàn)一個殘破的頭蓋骨?！偣舶l(fā)現(xiàn)了屬于40多個個體的北京人化石。時間距今約七十萬年至二十萬年。北京人

北京猿人的特征●能夠制造和使用勞動工具●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8.2厘米，孔徑0.31-0.33厘米。這是中國已發(fā)現(xiàn)的時代最早的骨針之一，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,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，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he之間構(gòu)成邏輯上的動賓關(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