2026仁爱九年级英语上册Unit2Topic2知识点归纳与练习

同学们，当我们翻开Unit2Topic2的课本，我们将围绕“关爱我们的地球”这一核心主题展开学习。本单元不仅能帮助我们积累相关的词汇和表达，更能引导我们思考如何用实际行动为保护环境贡献力量。下面，让我们一同梳理本单元的重点知识，并通过练习加以巩固。一、核心词汇归纳词汇是语言学习的基石。本单元的词汇多与环境、污染、保护及自然资源相关，我们需要重点掌握它们的含义及用法。（一）核心名词(Nouns)*resource(资源)：指大自然提供的可供利用的东西，常用复数形式resources，如naturalresources(自然资源)。*environment(环境)：指我们周围的自然世界和条件。*recycle(回收利用)：指将废物处理后再利用的过程，其名词形式为recycling。*energy(能量；能源)：如solarenergy(太阳能),windenergy(风能)。*rubbish/litter(垃圾)：rubbish较为通用，litter尤指在公共场所散落的垃圾。*harm(伤害)：指对某物或某人造成的损害。（二）核心动词(Verbs)*protect(保护)：后常接名词作宾语，如protecttheenvironment(保护环境)。*reduce(减少)：指降低数量、程度等，如reducewaste(减少浪费)。*reuse(再使用)：指再次使用某物。*produce(产生；生产)：如factoriesproducewaste(工厂产生废物)。*save(节约；拯救)：如savewater(节约用水),saveenergy(节约能源)。*damage(损害)：指对某物造成物理或功能上的损坏。（三）核心形容词与副词(Adjectives&Adverbs)*important(重要的)→importantly(重要地)*necessary(必要的)→necessarily(必要地)*harmful(有害的)：beharmfulto...(对……有害)*useful(有用的)：beusefulfor...(对……有用)*serious(严重的)：如seriousproblem(严重的问题)*easily(容易地)*properly(适当地；正确地)（四）常用短语与固定搭配(Phrases&Collocations)*cutdown(砍倒；削减)：cutdowntrees(砍树),cutdownonexpenses(削减开支)*insteadof(代替；而不是)：后接名词、代词或动名词。*playapartin(参与；在……中起作用)*makeadifference(有影响；起作用)*throwaway(扔掉)*begoodfor(对……有益)*bebadfor(对……有害)*inorderto(为了)：后接动词原形，表示目的。*tryone'sbesttodosth.(尽某人最大努力做某事)二、重点句型与语法解析本单元的句型和语法知识，将帮助我们更准确、更流利地表达关于环境的看法和建议。（一）谈论建议、义务和禁止1.Weshould/shouldn't+动词原形(我们应该/不应该……)*Weshouldplantmoretreestomakeourcitygreener.*Weshouldn'tpourwastewaterintorivers.2.Wemust/mustn't+动词原形(我们必须/禁止……)*Everyonemustprotectourenvironment.*Youmustn'tlitterinpublicplaces.3.It's+adj.+(forsb.)+todosth.(对某人来说做某事是……的)*It'simportantforustosavewatereveryday.*It'snecessarytolearnaboutenvironmentalprotection.4.Hadbetter(not)+动词原形(最好（不）做某事)*You'dbettertakeyourownbagswhenshopping.*We'dbetternotusetoomanyplasticproducts.（二）条件状语从句(If-clauses)由if引导的条件状语从句，表示“如果……，就会……”。通常遵循“主将从现”原则，即主句用一般将来时，从句用一般现在时。*Ifwedon'ttakeactionnow,theenvironmentwillgetworse.*Ifeveryonerecyclespaper,wecansavemanytrees.（三）被动语态(PassiveVoice)本单元我们将进一步学习被动语态的用法，特别是与环境问题相关的表达，强调动作的承受者。*Manytreesareplantedinourcityeveryspring.(每年春天，我们城市都会种很多树。)*Plasticbagsshouldn'tbethrowneverywhere.(塑料袋不应该被到处乱扔。)*Thiskindofclothcanbereused.(这种布料可以被再利用。)*结构回顾：主语+be(am/is/are/was/were)+及物动词的过去分词(bysb./sth.)（四）表达影响和结果*becauseof+名词/名词短语(因为……)*Manyanimalslosetheirhomesbecauseofdeforestation.*so...that...(如此……以至于……)*Theriverissodirtythatnofishcanliveinit.三、功能意念项目(Functions)（一）提出建议(Makingsuggestions)*Whatshouldwedotoprotectourenvironment?*Whynotrideabiketoschoolinsteadoftakingacar?*Howaboutrecyclingthesebottles?*You'dbetterturnoffthelightswhenyouleavetheroom.（二）表达看法(Expressingopinions)*Inmyopinion,protectingtheenvironmentiseveryone'sduty.*AsfarasI'mconcerned,weshouldreducetheuseofplasticbags.（三）谈论影响和结果(Talkingabouteffectsandresults)*Cuttingdowntoomanytreeswillleadtosoilerosion.*Ifwekeeppollutingtheocean,manyseacreatureswilldie.四、巩固练习I.词汇填空(根据句意及首字母提示补全单词)1.Weshouldtryourbesttor______wastepaperandplasticbottles.3.It'sourdutytoprotectthee______aroundus.4.Usingsolarenergyisagoodwaytosavenaturalr______.5.Don'tthrowr______everywhere;putitinthebin.II.单项选择(从A、B、C、D中选出最佳答案)1.Weshouldstop______plasticbagstoprotectourenvironment.A.useB.touseC.usingD.used2.Ifwe______moretrees,ourcity______morebeautiful.A.plant;willbeB.willplant;isC.plant;isD.willplant;willbe3.Rubbish______intotheriver.It'sharmfultothefish.A.mustn'tthrowB.mustn'tbethrownC.canthrowD.canbethrown4.It'simportant______us______saveenergy.A.for;toB.of;toC.for;forD.to;toA.notbeB.nottobeC.don'tbeD.notbeingIII.句型转换(按要求改写句子)1.Wemustplantmoretrees.(改为被动语态)Moretrees__________________byus.2.Youshouldturnoffthetapwhenbrushingteeth.(改为否定句)You____________offthetapwhenbrushingteeth.3.Wecanprotecttheenvironmentbyrecycling.(对划线部分提问)____________we______theenvironment?4.It'stoolate.Wecan'tdoanythingnow.(合并为一句，用"so...that...")It's______late______we______do______now.IV.书面表达(根据提示写一篇关于环保建议的小短文，60词左右)提示：节约水电、绿色出行、减少使用塑料袋、不乱扔垃圾、植树造林等。(请同学们结合本单元所学词汇和句型，尝试完成此部分练习)参考答案(部分)I.词汇填空1.recycle2.pollution3.environment4.resources5.rubbish/litterII.单项选择1.