八下英语第十单元笔记

八下英语第十单元笔记

Unit10:SavingtheEarth

I.Vocabulary

1.Pollution(n):thepresenceorintroductionintotheenvironmentofsubstancesorthingsthathaveharmfulorpoisonouseffects

Example:Airpollutionisamajorprobleminmanycitiesaroundtheworld.

2.Greenhouseeffect(n):thetrappingofthesun'swarmthinaplanet'sloweratmosphere,causedbythegreatertransparencyoftheatmospheretovisibleradiationfromthesunthantoinfraredradiationemittedfromtheplanet'ssurface

Example:Thegreenhouseeffectiscausingglobalwarming,whichisleadingtorisingsealevels.

3.Globalwarming(n):agradualincreaseintheoveralltemperatureoftheearth'satmosphere

Example:Theeffectsofglobalwarmingarealreadybeingseeninmeltingicecapsandextremeweatherconditions.

4.Deforestation(n):theactionofclearingawideareaoftrees

Example:Deforestationisamajorcontributortotheincreaseingreenhousegasesintheatmosphere.

5.Endangeredspecies(n):aspeciesofanimalorplantthatisseriouslyatriskofextinction

Example:Thegiantpandaisanendangeredspeciesduetohabitatdestructionandpoaching.

6.Naturalresources(n):materialsorsubstancesoccurringinnature,whichcanbeexploitedforeconomicgain

Example:Fossilfuels,suchascoalandoil,arenaturalresourcesthatarebeingusedupatanunsustainablerate.

II.Grammar

1.PresentSimpleTense:usedtotalkaboutregularactivities,facts,generaltruths,habits,andfutureeventsinafixedtimetable.

Example:Thesunrisesintheeast.(generaltruth)

2.PresentContinuousTense:usedtotalkaboutactionshappeningatthemomentofspeakingornearfutureactions.

Example:Iamstudyingformyexamrightnow.

3.ModalVerbs:usedtoexpressability,permission,obligation,andadvice.

Examples:Youshouldrecycleyourwaste.(advice)

Youcan'tuseyourphoneduringtheexam.(permission)

III.Sentences

1.Weshouldreduceourcarbonfootprintbyusingpublictransportationinsteadofdrivingourcars.

2.Recyclingisasimpleandeffectivewaytoconservenaturalresources.

3.Deforestationnotonlydestroyshabitatsbutalsocontributestoclimatechange.

4.Thegovernmenthasimplementedstricterregulationstopreventwaterpollution.

5.Scientistsareworkingondevelopingrenewableenergysourcestoreducedependenceonfossilfuels.

IV.Writing

Writeaparagraphabouthowindividualscancontributetosavingtheearth.

Onewayindividualscancontributetosavingtheearthisbyreducingtheirenergyconsumption.Thiscanbedonebyturningofflightsandapplianceswhennotinuse,usingenergy-efficientlightbulbs,andchoosingenergy-savingdevices.Additionally,individualscanreducetheircarbonfootprintbyusingpublictransportation,biking,orwalkinginsteadofdriving.Recyclingisanothersimpleyeteffectivewaytosavetheearth.Bysortingandrecyclingpaper,plastic,glass,andmetal,wecanreducetheamountofwastegoingtolandfillsandconservenaturalresources.Lastly,individualscansupportorganizationsandinitiativ