冀教八下英语Unit 5《Lesson 4》课件

Lesson4Unit5Greatinventions1Readthequestionsandgiveyouranswers.(答案不唯一)ADoyoudrinkmilkeveryday?Why?B

Doyouknowhowthemilkwedrinkisprocessed?Yes.Becauseitgivesmecalciumforstrongbonesandteeth.Yes.Theyheatittokillbadbacteria(pasteurization),andthenpackit.2Readthepassageandanswerthequestions.Whilepouringaglassofmilk,Jeremynoticessomethingwrittenonthepackage.Jeremy:Hey,Mum!Ijustnoticedabigwordonthecarton.PASTEURIZED.Whatdoesitmean?同义表达：What‘sthemeaningofit?Mum:Well,ifsomethingispasteurized,itmeansthatithasgonethroughaprocessofheatingtoacertaintemperature.Jeremy:Whydoweheatmilk?Mum:Rawmilkhasdangerousbacteriaandgerms.Wemustheatmilkto72degreesCelsiusfor15secondstokillthem.动词不定式表目的Jeremy:Howdidpeoplediscoverthat?Mum:Manyyearsago,peoplesometimesgotsickwhentheydrankmilk.Someofthemevendiedbecauseofthebadbacteria.get+adj.表示状态的变化因为；由于，介词短语，后接名词、代词或动名词Jeremy:Wow!Whodiscoveredthisheatingprocess?Adairyfarmerorascientist?Mum:ItwasLouisPasteur,aFrenchmicrobiologist.Hediscoveredtheprocessaround1864.Jeremy:That’salongtimeago!Mum:(Shenodsandadds.)MrPasteurwasoneofthegreatestscientists.Hisworksavedmillionsoflivesaroundtheworld.Hewasfamousforhisworkongerms.Jeremy:(Heraiseshisglassofmilkintheair.)Well,here’satoasttoyou,MrPasteur.Thankyouformakingtheworldmuchsafer.oneofthe+形容词最高级+可数名词复数最……的……之一befamousfor...因……而闻名atoasttosb.敬某人，和某人杯AAccordingtothepassage,whatdoestheword“PASTEURIZED”mean?Itmeansthemilkhasbeenheatedtoacertaintemperaturetokillharmfulbacteria.BHowdidpeopleknowtheirmilkneededtobeheated?Peoplesometimesgotsickordiedafterdrinkingrawmilk.C

HowdidLouisPasteur’sworkmaketheworldsafer?Heinventedpasteurizationtokillharmfulmilkbacteria,savinglives.3Readthepassageagainandcompletetheparagraphwiththecorrectformsofthewords.inventgetsolveheatkillPasteurizationisaprocessthatkeepsmilksafefromharmfulbacteriabyheatingit.Inthepast,peoplesometimes________

sickorevendiedafterdrinkingmilk.To________thisproblem,Pasteur____________theprocessofpasteurizationaround1864.gotsolveinventedHe________themilkto72degreesCelsiusandkeptitatthattemperaturefor15seconds.Harmfulbacteriaandgermsinthemilk__________________,andthemilkbecamesafertodrink.heatedwerekilled4Workinpairs.Discussthefollowingquestionsandtakenotes.What’syourfavouriteinvention?Whoinventedit?Howdiditchangeourlives?5Writeapassagetointroduceaninvention.Usefulexpressions·Itwasinventedby...·Itwasinventedin...·Ithasmadeagreatdifferenceinmylife/ourlives.1pour/pɔː(r)/v.倒(教材P64)·Couldyoupourmeacupofcoffee?=Couldyoupouracupofcoffeeforme?你能给我倒杯咖啡吗？·Shepouredmilkintothecup.她把牛奶倒进杯子里。探究一核心单词·Hepouredhisheartandsoulintotheproject.他把全部心血倾注到这个项目中。·I’mgoingtopourouttheteafortheguest.我去给客人倒茶。pour

作动词，意为“倒”，可以接双宾语，poursb.sth.=poursth.forsb.给……倒……。还可引申为“倾注情感、精力”。常见搭配：(1)pourout涌出；倒(2)pour...into...把……倒进……；向……投入……(3)pourdown(雨)倾泻；(液体)流下2process/'prəʊses/n.过程；流程v.处理；加工(教材P64)·Learningalanguageisalongprocess.学一门语言是一个漫长的过程。·Weneedtosimplifythedesignprocesstosavetime.我们需要简化设计流程以节省时间。·We’restillintheprocessofmovingtothenewoffice.我们还在搬往新办公室的过程中。·Mostofthefoodwebuyisprocessedinsomeway.我们买的大部分食品都用某种方法加工过。process

作名词，意为“过程；流程”。常用搭配：intheprocessofdoingsth.在做某事的过程中aprocessof...……的过程inprocess在进行中process还可作动词，意为“处理；加工”。相关词：processedadj.经过加工的3heat/hiːt/v.加热；(使)变暖n.热；温度(教材P64)·Heattheoilandaddtheonions.把油烧热后加入洋葱。·Couldyouheatupthesoupforme?你能帮我把汤热一下吗？·Theroomhadacomfortableheat.房间里温度适宜。·Theheatoftheovenshouldbe200℃.烤箱温度应设定为200摄氏度。heat的一词多义：(1)heat作动词，意为“加热；(使)变暖”。heatsth.up加热某物heatup变热(2)作名词，意为“热；温度”，是不可数名词，指物体或环境的温度高低，或能量的一种形式。atahigh/lowheat在高/低温下相关词汇：heatern.加热器；炉子heatedadj.加热了的；激烈的4raw/rɔː/熟义adj.生的；未经加工的生义adj.原始的；无经验的；寒冷的(教材P64)·Iliketoeatrawvegetablesinsalads.我喜欢在沙拉里吃生蔬菜。·Theteamspentweeksorganizingtherawinformation.团队花了几周时间整理原始信息。·Sheisarawbeginnerandneedsmoretraining.她是个新手，需要更多训练。·Ithadbeenawetrawwinter.那是一个寒冷潮湿的冬天。·Theyoungsingerhasrawtalentbutneedsprofessionaltraining.这位年轻歌手有天赋但需要专业训练。gothrough经历(教材P64)·Shewentthroughadifficulttimeafterlosingherjob.她失业后经历了一段艰难时期。·Gothroughyourpapersbeforehandingthemin.交卷前仔细检查试卷。·Thelawhasnowgonethrough.这项法律现在已获通过。·Wewentthroughalloursavingstopayforthemedicalbills.我们耗尽了所有积蓄来支付医药费。探究二核心短语gothrough的一词多义：(1)表示“经历(困难、痛苦、变化等)”，强调过程的持续性或复杂性。(2)表示“仔细检查/翻阅”。(3)表示“通过；获准”。(4)表示“消耗完某物”，宾语多为时间，金钱等。Whilepouringaglassofmilk,Jeremynoticessomethingwrittenonthepackage.在倒牛奶时，杰里米注意到包装上写着什么东西。探究三核心句式分析结构：这是主从复合句。从句是由While引导的时间状语从句。此从句是省略结构，完整形式为：WhileJeremyispouringaglassofmilk。Jeremy是主句主语，notices是谓语动词，something是宾语，writtenonthepackage是过去分词短语作后置定语修饰something。·Whilewalkinginthepark,shefindsabeautifulflower.在公园散步时，她发现了一朵美丽的花。·WhileIagreewithyou,Ihavetoconsiderotheropinions.尽管我同意你的看法，但我还得考虑其