懂你英语Level 3 unit 3.docx

懂你英语Level 3 unit 3.docx

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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?

–Satisfiedcusto