人教版八年级英语下册unit2知识点分析与练习

同学们，欢迎来到Unit2的学习。本单元的主题围绕“帮助他人”展开，旨在引导我们关注社会、关爱他人，并学习如何用英语表达相关的意愿、能力和行为。下面，我们将对本单元的核心知识点进行梳理与分析，并配以针对性的练习，希望能帮助大家扎实掌握，灵活运用。一、核心词汇梳理与拓展词汇是语言的基石，本单元的词汇围绕“志愿活动”、“帮助”、“困难”、“能力”等主题展开。1.volunteer(v./n.)*动词：自愿（做某事）。常用搭配：volunteertodosth.例如：Manystudentsvolunteertocleantheparkonweekends.*名词：志愿者。例如：Sheworksasavolunteerinanoldpeople'shome.*拓展：voluntary(adj.)自愿的，志愿的。2.lonely(adj.)vs.alone(adj./adv.)*lonely：指情感上的孤独、寂寞，带有主观感受。例如：Theoldmanfeelslonelybecausehischildrenarenotaround.*alone：指客观上的独自一人，没有同伴。可作形容词或副词。例如：Helivesalone.(adv.)/Shewasaloneintheroom.(adj.)*辨析：不要说"Heisveryalone."，而应说"Heisverylonely."或"Heisallalone."3.several(adj./pron.)*几个，数个（修饰可数名词复数，位于具体数字之前，泛指）。例如：Ihaveseveralfriendsinthiscity./SeveralofthemarefromAmerica.4.strong(adj.)*强壮的；强烈的。其名词形式为strength(力量)，副词形式为strongly(强烈地)。*常用搭配：bestrongin(在某方面擅长)；astrongwind(大风)。5.feeling(n.)*感觉，感触；情感。可数名词。例如：IhadastrangefeelingwhenIsawher./Henevershowshisfeelings.*相关词：feel(v.感觉，觉得)；feelings(常用复数，表示各种情感)。6.satisfaction(n.)*满足，满意。不可数名词。其形容词形式为satisfied(感到满意的，修饰人)和satisfying(令人满意的，修饰物)。*常用搭配：asenseofsatisfaction(满足感)；besatisfiedwith(对...感到满意)。7.joy(n.)*高兴，喜悦。不可数名词。例如：Tearsofjoyrandownherface.*近义词：happiness,pleasure。8.owner(n.)*物主，主人。其动词形式为own(拥有)。例如：Whoistheownerofthishouse?/Heownsasmallshop.9.journey(n.)*旅行，行程（常指远距离的陆路旅行）。例如：Howlongisyourjourneytoschool?*辨析：travel(泛指旅行，不可数)；trip(短途旅行，常指往返)；tour(观光旅游，巡回演出)。*注意与rise(v.上升，升起，不及物动词，无被动语态)的区别。例如：Thesunrisesintheeast.二、重点句型解析与应用掌握句型是提升语言运用能力的关键。1.I'dliketohelphomelesspeople.*句型结构：I'dliketodosth.=Iwouldliketodosth.*含义：我想要做某事。（表示委婉的意愿或请求）*拓展：Wouldyouliketodosth.?(你想要做某事吗？)；Wouldlikesth.(想要某物)。*例句：I'dliketogoshoppingwithyou./Wouldyoulikeacupoftea?2.Youcouldhelptocleanupthecityparks.*句型结构：主语+could+动词原形+...*含义：（过去式表示委婉建议或推测）你可以/能够...（此处could表示建议，语气比should委婉）*例句：Youcouldtrythisnewrestaurant.It'sverygood./Couldyoupleaseopenthewindow?(请求，更委婉)3.Shedecidedtotryoutforavolunteerafter-schoolreadingprogram.*短语解析：tryoutfor...参加...的选拔（或试镜）。*另：tryoutsth.试验/试用某物。例如：Iwanttotryoutmynewbike.*句子结构：动名词短语(Volunteeringhere)作主语，谓语动词用单数形式。5.IcandowhatIlovetodoandhelpothersatthesametime.*句子结构：whatIlovetodo是宾语从句，作动词do的宾语。*atthesametime:同时。三、语法焦点本单元的核心语法是动词不定式(Infinitive)的用法。1.动词不定式的基本形式：to+动词原形(to有时可以省略)。2.动词不定式的句法功能：*作主语：TolearnEnglishwellisimportant.(学好英语很重要。)（此时常用it作形式主语，而将真正的主语不定式置于句末：ItisimportanttolearnEnglishwell.）*作宾语：常接不定式作宾语的动词有：want,hope,decide,plan,try,learn,agree,wish,like,love,hate等。例如：Iwanttobuyanewbook./Shedecidedtogoalone.*作宾语补足语：常接不定式作宾补的动词有：ask,tell,want,invite,teach,allow,help,wish,encourage等。例如：Mymotherasksmetogetupearly./Hetaughtmetoswim.*注意：help后的不定式作宾补，to可以省略，也可以保留：Shehelpsme(to)studymath.*作定语：Ihavealotofworktodo./Sheisthefirstpersontoarrive.(不定式作定语常放在被修饰词之后)*作目的状语：Hecameheretoseeme.(他来这儿看我。)/Tocatchtheearlybus,Igotupatfive.(为了赶上早班车，我五点就起床了。)*其否定形式是在to前加not:Icameherenottoarguewithyou,buttohelpyou.3.“疑问词+不定式”结构：此结构相当于一个名词性从句，可以作主语、宾语或表语。常见的疑问词有：what,which,how,where,when等。例如：Idon'tknowwhattodo.(作宾语，=Idon'tknowwhatIshoulddo.)/Thequestionishowtosolvetheproblem.(作表语)/Whentostartisnotdecidedyet.(作主语)四、功能意念项目：提出建议(Makingsuggestions)本单元中，我们学习了如何用英语提出建议，这在日常交流中非常实用。*Youcould+动词原形...(你可以...)*A:I'mbored.B:Youcouldwatchamovie.*Whydon'tyou+动词原形...?/Whynot+动词原形...?(为什么不...呢？)*A:IneedtoimprovemyEnglish.B:Whydon'tyoujoinanEnglishclub?/WhynotreadEnglishnewspaperseveryday?*Let's+动词原形...(让我们...)*Let'sgoforawalkafterdinner.五、练习巩固I.词汇运用(根据句意及首字母提示补全单词或用所给单词的适当形式填空)1.Weneedv______tohelpcleanuptheparkthisweekend.2.Mygrandparentsliveinthecountrysidea______,buttheyneverfeell______.3.Hehass______goodfriendsinourschool.4.Thelittlegirlhasastrong______(feel)ofhappinesswhenshegetsthegift.5.Helpingotherscanbringusalotof______(satisfy).6.The______(own)ofthelostdogislookingforiteverywhere.7.Shedecided______(join)themusicclub.8.It'simportantforus______(learn)teamspirit.II.句型转换(按要求改写下列句子)1.Hecouldhelptheoldpeopledosomehousework.(改为一般疑问句)______he______theoldpeopledosomehousework?2.Shewantstovolunteerinanafter-schoolprogram.(对划线部分提问)____________she______tovolunteer?3.Thegirlissoyoungthatshecan'tgotoschool.(改为同义句)Thegirlis______young______gotoschool.Thegirlisn't____________togotoschool.4.IfeelveryhappywhenIhelpothers.(对划线部分提问)____________you______whenyouhelpothers?III.单项选择(从A、B、C、D四个选项中选出最佳答案)1.Mybrotheroftenvolunteers______theoldpeople'shomeonSundays.A.cleanB.tocleanC.cleaningD.cleaned2.—Idon'tknow______next.—Youcanaskyourteacherforhelp.A.whattodoB.whatdoesC.howtodoD.howdoes3.It's______formetofinishtheworkintwodays.Ineedmoretime.A.importantB.impossibleC.possibleD.necessary4.Weshouldtryourbest______Englishwell.A.learnB.learningC.tolearnD.learned5.Thenewsmadeallofus______veryexcited.A.feelB.tofeelC.feltD.feelingIV.完形填空(阅读下面短文，掌握其大意，然后从各题所给的A、B、C、D四个选项中选出最佳答案)Lastsummer,I2______tobeavolunteeratalocalhospital.Ihelpedthenurses3______thesickchildren.Iplayedgameswiththem,readstoriestothem,andsometimesjusttalkedwiththem.Atfirst,somechildrenwereveryshyanddidn'twanttotalk.Butaftersometime,theybecame4______andstartedtosmile.Iwillneverforgetthelookof5______ontheirfaceswhentheygotasmallgiftfromme.ItwasagreatfeelingtoknowthatIcouldmakeadifferenceintheirday.Volunteeringnotonlyhelpedthosechildren,butalsohelpedmeunderstandtheimportanceofgiving.1.A.hardB.sadC.goodD.easy2.A.decidedB.hatedC.forgotD.refused3.A.onB.withC.forD.about4.A.quieterB.angrierC.morelonelyD.moreoutgoing5.A.sadnessB.satisfactionC.joyD.surpriseV.阅读理解(阅读下面短文，选择最佳答案回答问题)Volunteeringgivesyouachancetochangelives,includingyourown.Ifyou'refeelingfrustratedorboredwithyourlife,doingsomethingvoluntarycanhelpyououtofthat.You'llmeetnewpeople,learnnewskills,andfindasenseofpurpose.Volunteeringcanalsohelpyoubuildconfidence.Youaredoingsomethingusefulandmakingacontributiontosociety,whichfeelsgoodaboutyourself.Yourself-esteem(自尊)willgrowasyourealizeyourownabilitiesandseetheresultsofyourwork.Sowhynottryvolunteering?Youdon'tneedanyspecialskillsorexperience.Allyouneedisawillingheart.1.Whatcanvolunteeringhelpyouifyoufeelfrustratedwithyourlife?A.Itcanhelpyoumakealotofmoney.B.Itcanhelpyoumeetfamouspeople.C.Itcanhelpyououtoffrustration.D.Itcanhelpyougetagoodjob.2.Howdoesvolunteeringhelpconnectyoutoothers?A.Bymakingyourich.C.Byteachingyounewlanguages.D.Bygivingyouexpensivegifts.3.Whatcanvolunteeringdoforyourconfidence?A.Itcanmakeyoufeelbored.B.Itcanmakeyoufeelmorefrustrated.C.Itcanhelpyoubuildconfidenceandself-esteem.D.Itcanmakeyou