懂你英语Level3unit3.docx
《懂你英语Level3unit3.docx》由会员分享,可在线阅读,更多相关《懂你英语Level3unit3.docx(22页珍藏版)》请在冰豆网上搜索。
懂你英语Level3unit3
Level3unit3part1
Listening
TherearemanyformsoflifeonEarth,includinghumanbeings.
Lifeexistsinavarietyofconditions.
Someformsoflifeliveinawateryenvironment,liketheoceans.
Otherformsoflifecanbefoundinverydryareas,likedeserts.
However,foranyformoflifetoexist,conditionsmustberight.
Whenconditionsarenotright,thatformoflifewillbecomeextinct.To
becomeextinctmeanstodieoutcompletely.
-Whatmustberightforlifetoexist?
-Conditions.
-Whathappensifconditionsarenotright?
–Lifecannotexist.
Conditionsmustberightforlifetoexist.
Millionsofyearsago,therewereformsoflifethatnolongerexist.
Whenconditionschanged,theseformsoflifediedout.
Oneextinctioneventhappenedabout250millionyearsago.
Thiswasthelargestextinctioneventofalltime.
Manyformsoflifebecameextinct.
96%ofalllifeintheoceansdiedout.
Mostinsectsalsobecameextinct.
Thiseventhappenedoveraperiodofseveralmillionyears.
-Whathappenedabout250millionyearsago?
–Manyformsoflifebecameextinct.
-Whathappensinanextinctionevent?
–Manyformsoflifebecameextinct.
Thecausesofthisextinctioneventarestillunknown.
Possiblecausesincludelargevolcaniceruptionsandglobalwarming.
Somescientistsbelievethattherewereseveralcauses.
Theybelievethataseriesofeventscausedtheextinctions.
Scientistsareworkingtobetterunderstandwhatreallyhappened.
-Whatistheonepossiblecauseofthisevent?
–Volcaniceruptions.
Inmoderntimes,wehumansfacechangingconditions.
Forhumanstolive,weneedcleanairandcleanwater.
Pollutionisnowagrowingproblemaroundtheworld.
Pollutionpoisonstheairandwaterthatwedependon.
Pollutedairmakespeoplesickandafraidtogooutside.Polluted
waterpoisonsourfoodsupply.
Asaresult,weneverknowwhichfoodsaresafetoeat.
Humanbeingscannotliveinapoisonedenvironment.
Therefore,pollutionisamajorthreattoourexistence.
-Whatdohumansneedtolive?
–Cleanairandcleanwater.
-Whatpoisonstheairandwater?
–Pollution.
Humansneedtemperaturestobeinacomfortablerange.
Tobeinacomfortablerangemeanstobeneithertoohotnortoocold.
Withglobalwarming,globaltemperaturesarerising.
Astemperaturesrise,thepolaricecapswillmelt.
Asthepolaricecapsmelt,oceanlevelswillrise.
Areasofsomecountrieswillsoonbeunderwater.
Peoplewillbeforcedtorelocatefromfloodedareas.
-Astemperaturesrise,whatwillhappentothepolaricecaps?
–Thepolaricecapswillmelt.
-Asthepolaricecapsmelt,whatwillhappen?
–Oceanlevelswillrise.
Innature,evensmallchangescansometimeshavelargeeffects.
It’sdifficulttopredictwhat’sgoingtohappen.
Theentireecosystemthatwedependonischanging.
Someofthesechangesareirreversible.
Irreversiblechangescannotbeundone.
-Whatcansmallchangessometimescause?
–Largeeffects.
-Whatishappeningtotheworld’secosystem?
–Ecosystemischanging.
Let’shopethathumansaresmartenoughtounderstandhowtheworldischanging.
Withmoreunderstanding,wecanmakebetterchoicesaboutwhattodo.
Wecanfacethechallengesofpollutionandglobalwarming.
Weneedtodothisbeforeit’stoolate.
ThisplanetEarthisouronlyhomeandweneedtoprotectit.
-Whatchallengesdoweneedtoface?
–Pollutionandglobalwarming.
Weneedtoprotecttheenvironmentthatsupportsus.
Vocabulary
Mammalsarecoveredbyhairorfur,haveabackbone,andarewarmblooded.
Allfemalemammalsproducemilkfortheiryoung.
Reptilesarecoveredbyscales,andincludessnakes,lizardsandturtles.
Reptileshaveabackboneandarecoldblooded,whichmeanstheyoftenreliedontheexternalsourceofheat.
Birdsarecoveredbyfeathersandarewarmblooded.
Mostbirdscanflyandmanytypesofbirdsmigrategreatdistances.
Mostinsectssuchasantsandbeeshaveasmallthreepartofbodywiththreepairsoflegs.
Someinsects,likemosquitoes,spreaddiseasesthatcausethedeathsofmanyhumans.
Unlikeanimals,plantsgettheenergythattheyneedfromthesun.
Plantsconvertlightenergy,alongwithcarbondioxideandwater,intochemicalenergy.
Insectsdon’thaveabackboneandmostarecooled-blooded.
Insectssuchasantsandbeesliveinwell-organizedcolonies.
Mosquitoescausethedeathsofmorehumansthananyotheranimal.
Mammalsincludesomeofthemostintelligentanimalsonearth,suchaselephantsandhumanbeings.
Scalesandrulersareusedtomeasureweightandlength.
Unitsofweightincludekilogramsandpounds,andunitsoflengthincludecentimetersandinches.
Theseinstrumentsareusedtoobserveverylargeandverysmallobjects.
Telescopesareusedtobyastronomersandmicroscopesareusedbybiologistsanddoctors.
Theseappliancesareusedinthekitchensofalmosteveryhome.
Stovesareusedtoheatfoodandrefrigeratorsareusedtokeepfoodscoolorcold.
Householdtoolsliketheseareusedtobuildandrepairthings.
Hammersareusedtopoundinnailsandscrewdriversareusedtoturnascow.
Ifyouneedtopoundinanail,useahammer.
Dialogue
W:
doyouknowwhatdayitistoday?
M:
whatdoyoumean?
Isitaspecialday?
W:
oh,soyoudon’tremember.
M:
rememberwhat?
What’ssospecial?
W:
it’souranniversary.Westarteddatingayearagotoday.
M:
oh,really,I’msorry.
-Whendidtheyfirststartdating?
–Ayearago.
M:
justaminute.Whatdoyouthinkthisis?
W:
oh,it’sanecklace.
M:
doyoulikeit?
W:
yes,Ido.It’slovely,especiallytheredheart.MayIputiton?
M:
no,letmedoit.
-Whatdidhegiveher?
–Anecklace.
W:
soyoudidremember.
M:
ofcourseIremembered.It’saveryspecialdayforbothofus.
W:
Ihavesomethingforyoutoo.
M:
youdo?
W:
yes,butitwillhavetowaituntillater.
M:
oh,Ican’twait.Tellmewhatitis.
-Whatwouldhavetowaituntillater?
–She’sgoingtogivehimagift.
Doyouknowwhattodayis?
W:
canyouguesswhatitis?
M:
couldyougivemeahint?
W:
wewenttheresixmonthago.
M:
oh,youmeanAlfredo’s.
W:
yes,areyouexcited?
Yousaidyoureallylikethefoodthere.
M:
yes,that’strue.Ialsorememberthedessert.Doyou?
W:
yes,butlet’snottalkaboutthatnow.Let’snowruinthesurprise.
-WhatisAlfredo’s?
–Arestaurant.
-Whataren’ttheygoingtotalkabout?
–Theyaren’tgoingtotalkaboutthedesert.
Herememberedthattodayistheiranniversary
W:
Thatrestaurantlooksnice.
M:
Yes,butitlooksexpensive.
W:
Let’sgoinandlookthemenu.Wowthemenulooksgreat,especiallythefish.M:
Yes,itlooksgood,butlookatthoseprices.
-Whatdoesn’tshelikeaboutthemenu?
–Shelikesthefoodchoices.
M:
Let’strysomewhereelse.
W:
Sometimesit’soktospendalittlemoney.
M:
Yes,butthesepricesareabittoohigh,don’tyouthink?
W:
Yes,thereareabithigh.Butdon’tyouthinkI’mworthit?
Let’senjoyourselves.
M:
Ah,ok,ifyouputitthatway.Let’sseeifwecangetatable.
W:
I’mgladyouhaveyourcreditcard.
M:
Isurehopethefoodisgood.
W:
Stopworrying.Let’sjustenjoy.
-Whoisgoingtopaythebill?
–Hewillpaythebill.
-Howishegoingtopay?
–Heisgoingtousehiscreditcard.He
isworriedaboutspendingsomuchmoney
Level3unit3part2
Listening
QuickServeisahomerepaircompany.
Itprovidesquick,reliablerepairservicestohomes.
QuickServehandlesplumbingandelectricalissues,24hoursaday.
Italsocleansroofs,fixesinternetconnectionsandreplacesbrokenwindows.
Forasmallfee,customerssubscribetotheservice.
Itsmaincustomersaretheelderly,whichmeansolderpeople.
Whenevercustomershaveaproblem,theycancallforhelp.
Thereisalsoasmallservicechargeforeachservicecall.
-WhatkindofservicesdoesQuickServeprovide?
–Homerepairservices
Thecompanywasestablished5yearsagoandisgrowingrapidly.
Itstartedinonecitybutisnowin5cities.
Thecompanyplanstoexpandto10citieswithinthenext24months.
Ineachcitythereisasmallcentralofficeinthelow-rentareaofthecity.
Thecentralofficehandlesthebusiness,advertising,payrollandbilling.
Italsotakescallsfromcustomers,eitheronlineorbytelephone.It
takescalls24hoursaday,7daysaweek.
-Whenwasthecompanyestablished?
–Itstartedfiveyearsago.
-Wheredoesthecompanylocateitscentraloffices?
–Theylocateinlow-rentareas.
60%ofthecompany’semployeesworkfromtheirhomes.
Whenacustomercallsintocentraloffice,aserviceemployeeiscontracted.
Theserviceemployeethencontractsthecustomerandsignsupanappointment.
Theseserviceemployeesarehighlytrainedandprovideexcellentservice.
Inemergencies,suchasaseriousplumbingproblem,servicecanbeprovidedwithinanhour.
Onereasonforthisisthattheserviceemployeesliveindifferentpartsofthecity.
Theyarenotcentrallylocatedsoit’squickerandeasierforthemtotraveltoacustomer’shome.
-Wheredo60%ofthecompany’semployeeswork?
–Fromtheirownhomes.
QuickServehasanexcellentreputation.
Itspricesarereasonableanditsservicesarequickandefficient.
Thecompany’sserviceemployeesareclean,politeandefficient.
Inthistypeofbusiness,persontopersoncontactisthekeytosuccess.
Witheachsatisfiedcustomer,morecustomerssubscribe.
SatisfiedcustomersrecommendQuickServetotheirfriends.
Thiskindofwordofmouthadvertisingisverycosteffective.
Costeffectivemeansthattheresultsaregoodwithoutpayingahighprice.
Inotherwords,qualityserviceprovidesitsownrewardtothecompany.
-WhatkindofcustomersrecommendQuickServetotheirfriends?
–Satisfiedcustomer