2025-2026年天津市人教版初中九年级英语下册第8单元同步练习题

2025-2026年天津市人教版初中九年级英语下册第8单元同步练习题一、单选题（总共10题，每题2分，共20分）1.根据第8单元课文内容，Whatdoesthepassagemainlytalkabout?A.Theimportanceofprotectingendangeredanimals.B.Thebenefitsofusingpublictransportation.C.Thereasonswhypeopleshouldreduceplasticwaste.D.Thestepstoorganizeacommunityclean-upevent.解析：本题考查单元主题理解。根据第8单元课文《ProtectingOurPlanet》中关于塑料污染的讨论，正确答案为C。选项A涉及动物保护，但非单元重点；选项B涉及交通方式，与单元内容无关；选项D涉及环保行动，但未涵盖核心主题。单元核心词汇如"plasticwaste"、"reduce"、"environmentalprotection"均指向C选项。2.AccordingtothereadingpassageinUnit8,whichofthefollowingisNOTasolutiontoreduceplasticpollution?A.Usingreusablebagsinsteadofplasticbags.B.Recyclingplasticbottlesandcontainers.C.Burningplasticwastetogenerateenergy.D.Supportingcompaniesthatproduceeco-friendlyproducts.解析：本题考查细节信息提取。文中明确提到可重复使用购物袋（A）、回收塑料瓶（B）和推广环保产品（D）是解决塑料污染的方法，而焚烧塑料会产生有害气体，与环保目标相悖。单元语法点"should"和"shouldn't"在此处体现因果逻辑。3.Intheunit'sgrammarsection,whichsentencecorrectlyusesthepassivevoicetodescribehowplasticwasteisproduced?A.Manyfactoriesmakeplasticwasteeveryday.B.Plasticwasteismadebymanyfactorieseveryday.C.Manyfactoriesaremakingplasticwasteeveryday.D.Plasticwastemakesmanyfactorieseveryday.解析：本题考查被动语态掌握。根据单元语法讲解，被动语态结构为"be+过去分词"，选项B符合"主语+be动词+过去分词"的规则。选项A为主动语态；选项C时态错误；选项D主谓不一致。单元词汇"manufacture"在此处体现被动用法。4.Whatisthebesttitlefortheunit'swritingtaskaboutenvironmentalproblems?A.MyFavoriteAnimalB.HowtoSaveMoneyC.ProtectingtheEarth:WhatCanWeDo?D.TheHistoryofPublicTransportation解析：本题考查写作任务理解。根据单元写作要求，学生需就环保问题提出建议，选项C最符合主题。选项A涉及动物，与单元无关；选项B涉及经济，偏离环保主题；选项D涉及历史，与单元实践性不符。单元写作范文强调"action-oriented"（行动导向）。5.Accordingtotheunit'sspeakingactivity,whichsentenceshowscorrectuseofthesecondconditional?A.IfIhavetimetomorrow,Iwillvisitthezoo.B.IfIwereyou,Iwouldreduceplasticuse.C.Ifshecallsyou,pleasetellherI'mbusy.D.Ifitrains,weshallgotothepark.解析：本题考查虚拟语气掌握。根据单元语法讲解，第二条件句描述与事实相反的情况，需用"were"或动词原形。选项B符合"If+pastsubjunctive,...would+baseverb"结构。选项A为第一条件句；选项C为第一人称祈使句；选项D为古体英语表达。6.WhichofthefollowingwordsbestdescribesthetoneofthepassageaboutclimatechangeinUnit8?A.HumorousB.OptimisticC.UrgentD.Sarcastic解析：本题考查语篇情感态度分析。根据单元阅读材料中关于气候变化的讨论，文中多次使用"immediateaction"、"crisis"等词汇，体现紧迫感。选项C最符合单元文本特征。单元词汇"concerned"、"awareness"强化了这一判断。7.Intheunit'svocabularysection,whichsentencecorrectlyusestheword"sustainable"?A.Thecompanyisfamousforitssustainableproducts.B.Sheboughtasustainablecarbecauseitwasexpensive.C.Weshouldusesustainableenergytoprotecttheplanet.D.Hissustainablelifestylemadehimverypopular.解析：本题考查词汇应用能力。根据单元词汇表解释，"sustainable"指环境可持续的，选项C最符合其使用场景。选项A主语错误；选项B因果逻辑颠倒；选项D搭配不当。单元语法点"adjective+noun"在此处体现。8.Whatisthemainpurposeoftheunit'sreadingpassageaboutoceanpollution?A.Toadvertiseanewtypeofplasticbottle.B.Toexplainhowfishcanswiminpollutedwater.C.Topersuadereaderstoreducesingle-useplastics.D.Todescribethehistoryofoceanconservationefforts.解析：本题考查阅读目的判断。根据单元阅读材料结构分析，文中通过数据展示污染危害，并呼吁行动，属于说服性文本。选项C最符合单元写作意图。单元写作技巧强调"persuasivelanguage"（说服性语言）。9.Accordingtotheunit'sgrammarexplanation,whichsentencecorrectlyusesthepresentperfectcontinuoustense?A.Shehasbeenplantingtreesforthreeyears.B.Theywillhavefinishedtheprojectbytomorrow.C.HewaseatingdinnerwhenIarrived.D.Wehavegonetotheparkmanytimes.解析：本题考查时态掌握。根据单元语法讲解，现在完成进行时强调动作从过去持续到现在，选项A符合"have/hasbeen+V-ing"结构。选项B为将来完成时；选项C为过去进行时；选项D为现在完成时。单元词汇"continuously"在此处体现时态特征。10.Whichofthefollowingisatypicalstructureusedintheunit'sspeakingactivitiesforexpressingopinions?A.Ithinkthatitisimportanttorecyclepaper.B.Inmyopinion,weshouldstopusingplasticbags.C.Accordingtome,protectinganimalsismoreimportant.D.Ibelievethateveryonemustreducewaste.解析：本题考查口语表达结构。根据单元口语练习范例，表达观点常用"Inmyopinion..."或"Frommyperspective..."，选项B最符合单元教学要求。选项A缺少主语；选项C用词与单元主题不符；选项D语气过于绝对。二、填空题（总共10题，每题2分，共20分）1.Theunit'sreadingpassagementionsthatplasticwaste_______intheoceaneveryyear,whichharmsmarinelife.空格1_______解析：本题考查词汇拼写。根据单元阅读材料，文中提到塑料垃圾"increasesrapidly"，正确填入"increasesrapidly"。单元语法点"adverbialphrases"在此处体现。2.Toreducecarbonemissions,weshouldusepublictransportationinsteadofdriving_______cars.空格2_______解析：本题考查形容词比较级。根据单元语法讲解，"insteadof"后需用形容词比较级，正确填入"morefuel-efficient"。单元词汇"emissions"在此处体现环保主题。3.Theunit'swritingtaskasksstudentstowritealettertoalocalnewspaper_______aboutplasticpollution.空格3_______解析：本题考查介词使用。根据单元写作要求，"writeto...about..."是固定搭配，正确填入"about"。单元语法点"prepositionalphrases"在此处体现。4.Ifeveryone_______reusablewaterbottles,wecouldsignificantlyreduceplasticwaste.空格4_______解析：本题考查虚拟语气。根据单元语法讲解，第二条件句从句需用动词原形，正确填入"used"。单元词汇"significantly"在此处体现程度。5.Theunit'sspeakingactivityincludesadiscussionabouthowto_______energyathome.空格5_______解析：本题考查动词形式。根据单元口语练习主题，"save"与"energy"搭配，正确填入"save"。单元语法点"gerund"在此处体现。6.Manypeoplebelievethatgovernmentsshould_______taxesonplasticproductstoencouragerecycling.空格6_______解析：本题考查动词原形。根据单元写作范文，"increase"与"taxes"搭配，正确填入"increase"。单元词汇"products"在此处体现环保政策。7.Theunit'sreadingpassagedescribeshowplasticbottles_______fromoilandchemicals.空格7_______解析：本题考查动词过去分词。根据单元语法讲解，"bemadeof"结构中动词需用过去分词，正确填入"aremade"。单元词汇"chemicals"在此处体现材料来源。8.Toprotecttheenvironment,weshould_______single-useplasticsandchooseeco-friendlyalternatives.空格8_______解析：本题考查动词不定式。根据单元语法讲解，"should+V"结构表建议，正确填入"avoid"。单元词汇"alternatives"在此处体现替代方案。9.Theunit'sgrammarsectionexplainshowtousethepassivevoicewiththeverb_______(presentperfect).空格9_______解析：本题考查动词原形。根据单元语法表，被动语态动词原形为"havebeen+V-ed"，正确填入"havebeen"。单元词汇"section"在此处体现语法教学。10.Intheunit'swritingtask,studentsareaskedtosuggestwaysto_______waterintheircommunities.空格10_______解析：本题考查动词形式。根据单元写作要求，"save"与"water"搭配，正确填入"save"。单元语法点"modalverbs"在此处体现建议语气。三、判断题（总共10题，每题2分，共20分）1.Theunit'sreadingpassagesuggeststhatplasticpollutionismainlyaproblemindevelopingcountries.解析：本题考查文本细节判断。根据单元阅读材料，文中提到塑料污染是全球性问题，并非仅限于发展中国家。判断为错误。单元写作技巧强调"globalperspective"（全球视角）。2.Theunit'sgrammarsectiononlyteachesthepresentperfecttense,notthepastperfect.四、简答题（总共4题，每题4分，共16分）1.Explainhowtheunit'sreadingpassageusesstatisticstosupportitsargumentsaboutplasticpollution.参考答案：Thepassageusesstatisticsinthreeways:(1)Itprovidesdataontheamountofplasticwasteproducedgloballyeachyear,suchas"over300milliontons".(2)Itcitesresearchshowingthat90%ofoceanplasticcomesfromland-basedsources.(3)Itpresentsachartcomparingplasticwastegrowthoverthepastdecade.Thesestatisticscreateafactualbasisfortheargumentthatplasticpollutionisaseverecrisisrequiringimmediateaction.解析：本题考查文本分析方法。答案需涵盖数据类型（总量、来源比例、增长趋势）、数据作用（建立论据）和主题关联（危机性），共200字。2.Describethestructureofaletterstudentsshouldwritefortheunit'swritingtask.参考答案：Thelettershouldfollowthisstructure:(1)Introduction:Greettheeditorandbrieflystatethepurpose(e.g.,"Iamwritingtoraiseawarenessaboutplasticpollution").(2)BodyParagraphs:Providetworeasonswhyplasticwasteisharmful(e.g.,harmingmarinelife,pollutingsoil)andsuggesttwosolutions(e.g.,banningsingle-useplastics,promotingrecycling).(3)Conclusion:Summarizethekeypointsandcallforcommunityaction(e.g.,"Let'sworktogethertoreduceplasticwaste").解析：本题考查写作结构掌握。答案需分点说明各部分内容（称谓、目的、论点、建议、结尾），共200字。3.Howdoestheunit'sgrammarsectionhelpstudentswritemoreeffectivelyaboutenvironmentalproblems?参考答案：Thegrammarsectionteachesthreekeyskills:(1)Passivevoice(e.g.,"Plasticbottlesareproducedfromoil")toemphasizeactionsratherthanactors.(2)Presentperfectcontinuous(e.g.,"Wehavebeenusingplasticfordecades")toshowongoingproblems.(3)Secondconditional(e.g.,"Ifpeoplereducedwaste,theplanetwouldbehealthier")tosuggestalternatives.Thesestructuresallowstudentstopresentenvironmentalissueswithclarityandpersuasiveforce.解析：本题考查语法应用能力。答案需结合具体语法点（被动语态、完成进行时、虚拟语气）说明其写作功能，共200字。4.Whatarethreewaystheunit'sspeakingactivitypreparesstudentsforreal-lifeenvironmentaldiscussions?参考答案：(1)Role-playing:Studentsdebatepolicieslikeplasticbans,simulatingreal-worldconflicts.(2)Groupdiscussions:Theypracticecollaborativeproblem-solving(e.g.,designingeco-friendlyproducts).(3)Publicspeaking:Theydelivershortpresentationsonlocalenvironmentalcampaigns,buildingconfidenceforpublicadvocacy.Theseactivitiesteachargumentation,teamwork,andcommunicationskillsessentialforenvironmentalactivism.解析：本题考查口语能力培养。答案需分点说明活动形式（角色扮演、小组讨论、公开演讲）及其与现实场景的关联，共200字。五、应用题（总共4题，每题6分，共24分）1.CaseStudy:Alocalsupermarketisconsideringreplacingplasticbagswithpaperbags.Writeashortparagraph(60words)topersuadethesupermarketmanagertomakethischange.参考答案：DearManager,Istronglysupportreplacingplasticbagswithpaperbags.Paperbagsarebiodegradableandreducelandfillwaste.Whiletheycostmore,theenvironmentalbenefitsoutweightheexpense.Manycustomersprefereco-friendlyoptions.Let'stakeasteptowardsustainabilitytogether!解析：本题考查应用写作能力。答案需包含称谓、建议、理由（环保性、成本效益）、呼吁，共60字。评分标准：论点（2分）、语气（2分）、结构（2分）。2.Scenario:Yourclassisorganizingaschool-widerecyclingdrive.Writealistofthreespecifictasksyouwouldassigntoyourclassmates.参考答案：Task1:Collectandsortrecyclablesindesignatedbins.Task2:Createposterstoeducatestudentsaboutrecyclingrules.Task3:Countcollecteditemsandreportdatatotheschoolnewsletter.解析：本题考查任务分配能力。答案需列出三项具体任务（收集分类、宣传教育、数据统计），共60字。评分标准：任务相关性（2分）、可操作性（2分）、完整性（2分）。3.ProblemSolving:Aneighborusesdisposablecutleryforluncheveryday.Writethreesentencesusingthepassivevoicetodescribetheenvironmentalimpactofthishabit.参考答案：Disposablecutleryisproducedfromnon-renewableresources.Thewastefromthesecutleryendsupinlandfillseveryday.Theenvironmentispollutedbyplasticandmetalwaste.解析：本题考查被动语态应用。答案需用被动语态描述环境影响（资源消耗、垃圾处理、环境污染），共60字。评分标准：语态正确（2分）、逻辑连贯（2分）、主题相关（2分）。4.CreativeTask:Imagineyouareajournalistreportingonanewlawbanningsingle-useplasticsinyourcity.Writeaheadline(15words)andashortleadparagraph(40words).参考答案：Headline:"CityEnactsPlasticBan:AStepTowardSustainability"Lead:"Effectivetoday,thecityhasbannedsingle-useplasticsinrestaurantsandstores.Thenewlawaimstoreducepollutionandpromoteeco-friendlyalternatives,markingahistoricshiftinenvironmentalpolicy."解析：本题考查新闻写作能力。答案需包含标题（15字）和导语（40字），涵盖事件核心信息（时间、地点、目的），共55字。评分标准：标题准确性（2分）、导语完整性（2分）、语言简洁性（2分）。【标准答案及解析】一、单选题1.C2.C3.B4.C5.B6.C7.A8.C9.A10.B解析示例（第1题）：正确答案为C。单元阅读材料明确指出塑料污染是全球性问题，文中数据覆盖全球范围，而非发展中国家。选项A与文本矛盾；选项B涉及交通方式，与单元主题无关；选项D描述环保行动，但未涵盖核心主题。单元词汇"plasticwaste"、"environmentalprotection"均指向C选项。二、填空题1.increasesrapidly2.fuel-efficient3.about4.used5.save6.increase7.aremade8.avoid9.havebeen10.save解析示例（第1题）：根据单元阅读材料，文中提到塑料垃圾"increasesrapidly"，正确填入"increasesrapidly"。单元语法点"adverbialphrases"在此处体现因果逻辑。三、判断题1.F2.F3.F4.F5.F6.F7.F8.F9.F10.F解析示例（第1题）：根据单元阅读材料，文中提到塑料污染是全球性问题，并非仅限于发展中国家。判断为错误。单元写作技巧强调"globalperspective"（全球视角）。四、简答题1.参考答案：Thepassageusesstatisticsinthreeways:(1)Itprovidesdataontheamountofplasticwasteproducedgloballyeachyear,suchas"over300milliontons".(2)Itcitesresearchshowingthat90%ofoceanplasticcomesfromland-basedsources.(3)Itpresentsachartcomparingplasticwastegrowthoverthepastdecade.Thesestatisticscreateafactualbasisfortheargumentthatplasticpollutionisaseverecrisisrequiringimmediateaction.解析：本题考查文本分析方法。答案需涵盖数据类型、数据作用和主题关联，共200字。2.参考答案：Thelettershouldfollowthisstructure:(1)Introduction:Greettheeditorandbrieflystatethepurpose(e.g.,"Iamwritingtoraiseawarenessaboutplasticpollution").(2)BodyParagraphs:Providetworeasonswhyplasticwasteisharmful(e.g.,harmingmarinelife,pollutingsoil)andsuggesttwosolutions(e.g.,banningsingle-useplastics,promotingrecycling).(3)Conclusion:Summarizethekeypointsandcallforcommunityaction(e.g.,"Let'sworktogethertoreduceplasticwaste").解析：本题考查写作结构掌握。答案需分点说明各部分内容，共200字。3.参考答案：Thegrammarsectionteachesthreekeyskills:(1)Passivevoice(e.g.,"Plasticbottlesareproducedfromoil")toemphasizeactionsratherthanactors.(2)Presentperfectcontinuous(e.g.,"Wehavebeenusingplasticfordecades")toshowongoingproblems.(3)Secondconditional(e.g.,"Ifpeoplereducedwaste,theplanetwouldbehealthier")tosuggestalternatives.Thesestructuresallowstudentstopresentenvironmentalissueswithclarityandpersuasiveforce.解析：本题考查语法应用能力。答案需结合具体语法点说明其写作功能，共200字。4.参考答案：(1)Role-playing:Studentsdebatepolicieslikeplasticbans,simulatingreal-worldconflicts.(2)Groupdiscussions:Theypractice