2023学年完整公开课版人教版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发现于1927年▲1929年12月2日发现第一个完整的头盖骨▲到1937年已发现的北京人的头盖骨共5个。▲1941年12月太平洋战争爆发后,在几个美国人手里弄得下落不明。▲1966年又发现一个残破的头盖骨。▲总共发现了属于40多个个体的北京人化石。时间距今约七十万年至二十万年。北京人

北京猿人的特征●能够制造和使用劳动工具●能使用天然火●摆脱了杂交的婚姻形态●生活艰苦，寿命比较短暂北京人头盖骨化石

北京猿人复原图北京人使用过的石器北京人石器制作法北京人生活想象图山顶洞人▲距今时间：18000年前▲地点:北京周口店龙骨山山顶洞穴▲体形:同现代人大体一样，脑容量：

1300——1500毫升▲生产和生活：开始采用磨制和钻孔技术制造石器、骨器制造骨针,缝制兽皮衣服产生了原始宗教仪式过着氏族公社的生活山顶洞人头骨山顶洞人1933年北京市房山县周口店龙骨山山顶洞出土。骨针长8.2厘米，孔径0.31-0.33厘米。这是中国已发现的时代最早的骨针之一，其针身保存完好，针孔处破裂，针尖锐利，表面有刮磨痕迹。针孔是用尖状器刮挖而成。山顶洞人的生活用具——骨针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.根据课文内容填空。lookedaheadcollectionWhenshewasnearhome,adelicioussmell_______herprogressandshebecamedizzywithhunger.Shesawhermotherandaunts_________thedeerandpigmeatoverthefire.JustthenDahu,her________,aswellasthebest________,camebackwithseveral____.arrestedpreparinghusbandtoolmakerfishLaterhebeganhistask:he_________hisscrapersuntiltheyweresharpenoughto______themeatandtoscrapethefish.Soon,thefirstoftheguestsbegantoarrive.Lalahopeditwasgoingtobejustaswonderfulaslastyear!cutupsharpenedWordsandexpressions

1.Ifonlyitcouldbejustlikelastyear!

要是能像去年那样就好了!Ifonly但愿;要是……就好了。其后一般用虚拟语气。

Ifonlyshehadlookedaheadandplannedbetter.Ifonlyhehadcome．

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

表示赞赏,尤指鼓掌欢呼

Everyoneapplaudedwhentheplayended.

演出结束时,大家都热烈鼓掌。

Iapplaudyourdecision.

我赞成你的决定。2.applaud:3.accelerate

a.toincreasethespeedof

加速,促进加快…...的速度

这部新车加速效能良好。

Thenewcarhasgoodacceleration.

b.tocausetohappenearlier(正式)催促

他决定加快他的课程进度。

Hedecidedtoacceleratehiscourses.

tocaptureandholdbriefly(theattention,forexample);engage引起注意吸引并短时间吸引住(如注意力);吸引

花的艳丽色彩引起苏珊的注意。

ThebrightcolorsoftheflowersarrestedSusan’sattention.

4.arrest:

havingawhirlingsensationandatendencytofall眩晕的,眼花的感到眩晕并要摔倒的

adizzyheight

令人晕眩的高度

Theoldwomanwasdizziedbythestrongwind.

那位老太太被风吹得头昏眼花。

Thedisasterdizziedhisbrain.

那场灾难弄得他头脑昏乱。

5.dizzy:

6.Abruptlyshesatdown,onlytobescoopedupbyherlaughing,shoutingsister,Luna.[考点]onlytodo是不定式作结果状语，表示意料之外的结果。[考例]Hehurriedtothebookingofficeonly______thatalltheticketshadbeensoldout.(陕西2006)A.tobetold B.totellC.told D.telling[点拨]tell与句子的主语he之间构成逻辑上的动宾关系。1.Thepolicehavea______twosuspectsinconnectionwiththebankrobbery.2.The__________(放射性的)wasteshouldbeburieddeepunderthegroundinsealedboxes.I.根据下列各句句意及所给单词的首字母或汉语提示,写出各单词的正确形式。rrestedradioactive练习坊3.Thedriversteppedonthegasanda_________thecar.4.Americansinmyneighborhoodusedtomaketheirown______(酸乳酪).5.Thenewmethodcaughtonandmanypeasantsbecamevery______(熟练的)atit.cceleratedyogurtskilful6.Itwassohotintheroomthatshefelt____(目眩的).7.Theaudiencea_________thesingerforthreeminutesforhisexcellentperformance.dizzypplauded1.Generallyspeaking,preparations___theBeijingOlympicsaresmoothlymarchingforwardinaccordancewithplans.2.Twentyyearsagopeoplelooked_____andthoughttheproblemwouldbesolvedbynow,butthatclearlyhasn’thappened.II.用适当的介、副词填空。forahead3.Huntingspidersrunafterinsectsorlie__waitforthem.4.Shescooped__ahandfulofsnowandpressedithardtomakeaball.5.Hebangedhishead______thewall.inupagainst6.Ismiled__myselfandstoppedworkingso