2025年八年级英语下册第四单元核心知识点精华总结

新版八年级英语下册第四单元知识点归纳Unit4Why dontyou talkto your parents你为何不和你打父母谈谈呢？Why dontyou talkto yourparents【解析】为何不……呢？Why dontyou do sth=Why not do sth【拓展】用于提提议的句型有.…怎么样？1What aboutdoing sth=How aboutdoing sth为何不呢？2Why dontyou do sth=Why notdo sth.让我们一起做某事吧3Lets do sth⑷我们做…好吗？Shall we/l do sth最佳做/不做某事5had betterdo/notdo sth请你做…好吗6Will/Would youplease do sth⑺你想去做某事吗？Would youlike to do sth你介意做某事吗？8Would youmind doing sth【回答】同意对方的提议时，一般用

①We dontallowsmoke in the readingroom.制止某人做某事避开keep sb.from doing sth keepaway fromMr.Li keptworkhere fornearly30years.

二、重点语法.情态动词与的使用方法1should could的使用方法should为情态动词，表达劝说、提议，意为“应当，它和其他情态动词同样，没有人称和数should的变化，后接动词原形，其否认形式为shouldnt,也许她应当跟你说声对不起Maybe sheshould saysorry toyou的使用方法could情态动词既是的过去式，表达过去的能力，又可以表达谨慎、客气的提议，后接动could can词原形，其否认形式为couldnt.我的祖父甚至到了岁任然能很My grandfathercould drivewell evenat theage ofeighty80好地驾车你可以出去给他买些药You couldgo out and buyher somemedicine.The girlread beforeshe wentto school.A.Could B.Couldnt C.Should D.May.状语从句2状语从句就是在句子中作状语的从句状语从句有好几种，如时间状语从句、原因状语从句、条件状语从句、成果状语从句、目的状语从句等本单元重点讲述如下三种类型的状语从句引导的时间状语从句

1.untiluntil意为“直到；在.......之前:注意until和not.•…until在使用方法上的区别在带有或引导的时间状语从句里Until tilluntil假如主句用肯定式，其含义是一直到・・・・・・时”，谓语动词只能用延续性动词假如主句用否认式，其含义是“直到.・・...才……”,谓语动词可用瞬间动词The youngman readtill thelight wentout.Lets waituntil therain stops.We wontstart untilBob comeDont getoff until the bus stops.Continue inthis directionuntilyou seea sign.一直朝着这个方向走直到你看见一种指示牌直到听到闹钟的铃声我才醒来I didntwake upuntil Iheard thealarm clock.引导的目的状语从句

2.so that是连词，意为“为的是，以便”，引导目的状语从句so that注意和在使用方法上的区别so that,in orderthat inorder to.让我己下你的号码，为Let metake downyour telephonenumber so that Ican callyou latert的是后来好打电话给你引导的状语从句

3.although的使用方法意思相称于尽管，虽然，用来引导让步状语从句它所引导的although though从句不能与并列连词等连用，但可以和等词连用but,and,so yet,still

①.尽管这本书很旧，我们还是决定买Although thebook wasold,we decidedto buyit2Although he was tired,he wenton working.尽管他参与这次竞赛只不Although hehad onlyentered thecontest forfun,he wonfirst prize.过是闹着玩而已，却赢得了头等奖@Our teacher allows usgo out for a walk.

③The boyshould beallowedplay aftersupper.

④We wontallow in the cinema.But youare allowedin therestroom.smoke©Teenagers shouldallowto choosetheir ownclothes.【拓展】与的辨析allow let指“容许”，表达“默许，听任，不加制止”，allow容许某人做某事allow sbto dosth指“让，让某人做某事，语意较弱，多用于口语中,不能用于被动语Let letsb dosth letO怎么啦？

4.Whafs wrong【解析】某人/物怎么了？Whafs wrongwith sb./sth我真的很累,由于我昨天晚上一直学Im reallytried becauseI studieduntil midnightlast night.习到午夜【解析】直到……时until今天晚上你为何不早点睡觉呢？Why dontyou goto sleepearlier thisevening【解析】去睡觉强调“入睡，睡着”这一动作goto sleep金,你看起来很难过

7.You looksad,Kim.【解析】看起来系动词，后跟形容词作宾语look【【拓展】系动词后跟作表语adj.一是保持安静be am/is/are bequiet=keep quiet二保持表达持续状态保持健康stay/keep stayhealthy=keep healthy三变化表达状态变化五起来表达感觉become/get/turn sound/look/smell/taste/feelJack usuallygets whenhe speaksin public.A.happily B.exciting C.worried D.tired5Tom sfather looksvery.But heis verykind.A.seriously B.serious C.friendly你给他打电话You callhim up.【解析】拜访；号召call upv+adv callon Icall upmy parentsevery Sunday.哦，昨天我发现我妹妹翻了我

9.Well,I foundmy sisterlooking throughmy thingsyesterday.的东西【解析11find sb.doing sth发现某人正在做某事Mr.Wang foundLi Dongreading astorybookintheclass.类彳以动词hear,watch,see,feel[解析2]look through浏览【拓展】与有关的短语looklook forlook after=take careof looklike lookthe samelook overlook throughlookout lookup lookaround lookforward to是的，不过我仍然很生她的气

11.Although sheswrong,Its nota bigdeal,【解析11although=though尽管,用来引导让步状语从句【注】不能与连用though/although but【拓展】辨析although/however⑴“虽然；虽然；纵然”，引导让步状语从句时放在主句前后都可although conj,他虽然年龄大了，但身体还很强健Although heis veryold,yet heis quitestrong⑵在句中作插入语，起一种连词的作用，一般用逗号与句子分开，可以放在句首however adv,或句中，意为“然而，尽管如此”雨下的很大尽管如此，我认为我们还应Its raininghard,However,I thinkwe shouldgoout.当出去【解析】.没什么大不了；不是什么大事常用于口语中2Its nota bigdeal你把作业忘在家里了You leftyour homeworkat home.【解析】遗忘，留下把某物忘在某地把某leave vleave sth.somewhere leavesb.by oneself人单独留下但愿事情顺利处理

12.Hope thingswork out.［解析］但愿1hope v从句表达但愿hope to dosth I hope to visitGuilin,hope+that Ihope thatyoull bebetter soon但愿wish vwish to dosthI wishto visitGuilin.但愿某人做某事wish sb.to dosthIwish youto go.从句表达愿望，从句用虚拟语气wish+that Iwish Iwere you.【解析】处理；成功地发展，后跟等词，表明产生的成果怎样2work outfine,well,badly我的问题是我不能喝我的家人和睦相处

13.My problemis Icant get on withmy favorite.【解析】和某人和睦相处;和某人关系良好getonwith sb.=get alongwith geton well/badly with相处的好/坏当他们争执的时候，

14.When theyargue,ifs likea big,black cloudhanging overour home.就像有一大团乌云笼罩在我们家［解析］争执1argue一争论,与某人辩论argument nhave anargument withsb与某人争执为某事与某人争执争论某argue withsb.argue withsb.about sthargue about sth事争辩;反对argue againstHe arguedagainst theplan【解析】挂在……之上；悬浮在……之上2hang over闲逛；常去某处hang outHe likesreading and he oftenhangs outinthebookshop.紧紧抓住hang on to Youdbetter hangon tome inthe crowd.挂电话；悬挂hang upAfter shefinished herconversation

15.Also,my elderbrother isnot verynice tome.【解析】.年龄较长的elder adjHis elderbrother isill.用来表达兄弟姐妹及子女之间的长幼关系，常用作定语elder泛指新旧、老幼或年龄的大小关系，可以用作表语，是的比较级形式older old【己】I Mybrother is7years olderthan myyounger sister.【解析】对某人友好2be niceto sb.be friendlyto sb.be goodto sb..他总是拒绝让我看我最喜欢的电

16.He alwaysrefuses tolet mewatch myfavorite TVshow视节目【解析】拒绝拒绝去做某事refuse=say noto vrefuse to dosth

①The boyrefusedgo to see hisfather withus.

②He refusedwhen Iasked himfor help.A.said yesB.said noC.said hello

17.1nstead hewatches whateverhe wantsuntil lateat night.相反，他却想看什么酒看什么，一直到深夜【解析】替代，反而，替1instead副词，替代,常放在句首或句尾，表达前面的事情没做，而做了背面的事情1instead.李病了，因此我去了Lee wasill soI wentinstead替代，而不是，放在句中2instead of+n/doing为介词短语，背面一般接名词、代词、介词短语或动名词形式instead of5She wroteto himinstead ofcalling him.=She didnt callhim.She wroteto himinstead.她没有给他打电话，而是给他写了封信Health isvery importantto us.We shouldeat morevegetables andfruit richfood.A.instead B.instead of C.because ofD.because【解析】任何，每一2whatever=no matterwhat.假如你的父母有问题，你应

18.1f yourparents arehaving problems,you shouldoffer to help当积极提供协助【解析】积极提出做某事offer to dosth【拓展】积极予以offer v⑴积极提出做某事offer to dosth⑵积极提供应某人某物offer sb.sth=offer sthto sb.The littleboy hisseat tothe oldlady on the crowdedbus.A.offered B.brought C.lent D.took另一方面，你为何

19.5econdly,why dontyou sitdown andcommunicate withyour brother不能坐下来和你的哥哥交流一下呢？【解析】第二；另一方面1secondly adv.[解析交流交流；沟通和某人2]communicate vcommunication ncommunicate withsb.交流They communicatewith each other byQQ.5They cant understandeach otherso theyhave difficultyin.A.communicate B.communicated C.communicating你应当跟他解释说你

20.You shouldexplain thatyou dontmind himwatching TVall thetime.并不介意他一直看电视【解析】解释;阐明—解释;阐明explain explanationn向某人解释某事给某人解释某事explain sthto sb.explain to sb sth我很胆小我的学习成绩

21.Im worriedabout myschool grades.【解析】.紧张某事be worriedabout sth【拓展】worry v紧张—►worriedadj.焦急的worry about=be worriedabout为・・.紧张

①Dont beworry.Youll catchup with others.2Dont aboutthings somuch.It willmake youstressed out.afraid B.worry C.worried D.Terrified我堂弟借我东西没有还我

23.My parentsgive me a lotof presureabout school.【解析】按；压压力press v—pressure⑴不可数名词物理学压力气压血压air pressureblood pressure⑵不可数名词还可指精神上、外界施加的压力=在压力下stress underpressure在学校我不得不和我的同学们竞争

25.You shouldall beeachotherto improve【解析】一提高improve=make...better0#improvement n对于这个问题均有谁提出了他们自己的观点

26.Who givestheir opinionsabout theproblem【解析】意见；想法；见解以某人的观点；在某人看来opinion nin onesopinion giveopinions给出有关某事的观点aboutsth.

27.These days,Chinese childrenare sometimesbusier onweekends thanweekdays.目前，中国的孩子有时周末比平常because theyhavetotake somany after-school classes还要忙，由于他们不得不上那么多的课后辅导班【解析】some time/sometime/some times/sometimes【口诀】分开是一段，合起是某时；分开是倍次，合起是有时ss一段时间，做时间状语做某事花费某人多长时1some timeIt takessb.some timeto dosth.间在某个时候，2sometime adv名词词组，“几次，几倍3some timesMr.Green wentto Sanyasome timeslast summer.有时一般目前时的标志词4sometimes=at timesIhope tovisit theUSA inthe future.A.sometimes B.some timesC.sometime D.some time其他人正在练习体育运动，

28.Others arepracticing sportssothatthey cancompete andwin.这样他们就能参与竞争并获胜【解析】其他的人或事物做这事尚有其他的others pron.There areother waysof doingit.措施My sisteris outgoing.She likesmaking friendswith.A.other B.another C.the otherD.others泰勒一家是一种经典的美国之家

29.The Taylorsare atypical Americanfamily.【解析】泰勒一家在姓氏的复数前加冠词表达“全家人或夫妻两人”，1The Taylorsthe使用时注意主语和谓语保持一致The Blacksare gettingready forthe holiday.【解析】经典的是……的特点”typical betypical of

30..Maybe Icould cut outafew of their activities,but Ibelieve these activities areimportant formychildrens future.或许我可以减少他们的某些活动，不过我相信这些活动对孩子们的未来很重要【解析】删除;删去cut outv+adv Youdbetter cutout thatsentence.切碎砍至插队切断水、电供应cut upcut downU cut in cut off Dontwhen otherstalk;its impolite.A.cutoutB.cutinC.cut downD.cutoff我真的很想他们成功

31.I reallywant themto besuccessful.【解析】成功的【拓展】成功，到达一成功successful succeedv successn一成功的一成功地successful adjsuccessfully adv♦succeed indoing sth

①If atfirst youdontsuccess.try,try again.2She worksvery hard,so shewill inthe exam.A.successful;pass B.success;passing C.succeed;passing D.successful;passing该写作业了

32.1fs timefor homework.【解析】是到做某事的时候了Its timefor sth Its timefor lunch.Ifs timeto dosthItstime togoto school.Its9:30pm.,children!is timeto goto bed.A.That B.It C.This D.They在有些In somefamilies,competition startsvery youngand continuesuntilthekids getolder.家庭，竞争从孩子们很小的时候就开始了，一直持续到他们长大【解析】继续；持续continue【拓展】继续做某事前后做同一件事continue doingsth=go ondoingsthcontinue todosth继续做某事前后不是同一件事=go ontodosth

①Lets continuereadthe text.

②Many studentshopetocontinuestudy afterfinishschool.

③The twoteams continuedthe gameafter halfan hour.A.play B.to playC.playing D.played【拓展】辨析continue,goon,last继续，持续，指进程在时间或空间上的延续，强调持续不停，有时也可以指短暂lcontinue v.停止后继续进行.他持续两天都在做这项工作He continuethe workfor twodays⑵指无间歇或有间歇地继续，或以某种特定方式继续go on继续做某事，指开始做此外一件事；go ontodosth继续做本来所做的事情go ondoingsth做完家庭作业之后，他继续去预After doinghis homework,he wentontopreview hislessons.习他的研究⑶持续，延续，维持，指某事物继续存在或某种现象在时间上延续，阐明某一动作要延last v.续一段时间那个工作她做不了多久She wontlast longin thatjob.妈妈们把她们的小孩子送去多种各样

34.Mothers sendtheir smallkids toall kinds of classes.的辅导班【解析发送11send-sent-sent v【短语】赶走派人去请send awaysend for寄出分发发射送给某人某物【注】send offsend outsend upsend sb.sth=send sthto sb.类似的动词有展示；给看给借出提供偿还告诉show givelend offerreturn tell

①You fillin bothparts ofthe form,then.A.send upit B.send forit C.send itaway D.send itoffPleasesend aphoto of your familyme.A.for B.at C.to D.with【解析】多种各样的2all kindsof【拓展】种类kind1n有点，有几分，有点冷一种的，某种的多种各样kind of+adj.kind ofcold a kind ofall kindsof的不一样种类的那种different kindsof What kind of...友好的对某人友好35adj.be kindto sb.=be goodto sb.=be friendlyto sb.【辨析】与kind ofkindsof:单独用，表达“有点”,后接形容词或副词:他有点瘦olkindof He is kind of thin.”I feelkind of我有点饿”hungry.”王叔叔说得有点快Uncle Wangspeaks kind of quickly.若前有等，译为“种，种类”后加名词o2kind ofa,this,that,what那类问题难回答That kind of questionis difficultto answer.Whatkind of sportdo youlike best你最喜欢何种运动？

①This kindof skirtlooks andsells.A.nice;well B.nice;good C.well;well D.good;nice

②一一What animalsdo youlike Monkeys.I thinktheyre clever.A.kindof;kindofB.a kindof;a kindof C.kindof;a kind D.akindof;kindof一3-Its goingto rain.Let mefetch anumbrella foryou.Thank you!You aresoA.lucky B.kind C.relaxed D.Interesting【浙江台州】《钢铁》

17.—I wanttoseethe movieIron Man

33.Do youknow theof theticket一Yes.Five dollars.A.number B.price C.kindD.name孩子们也应当有时间放松和

35..Kids shouldhave timeto relaxand thinkfor themselves,too.独立思索【解析】有时间做某事have timetodosth,她们总是把自己的孩子和其他的

①.People oftencompare ateacheracandle.A.to B.into C.as D.with

②・Its necessaryEnglish Chinesein Englishstudy.【四川广元】一A.compare;to B.to compare;with C.comparing;to D.to compare;into Whyaremost childrenunder too much pressure一Because theirparents alwayscompare themothers.A.With B.by C.to医生说太多的压力

37.Doctors saytoomuchpressure isnot good forachilds development.不利于孩子们的发展【解析对……有好处11be goodfor【拓展】好的一好处；善行；美德goodbetter;best adj.goodness nbe goodfor对.・・.有益处反be badfor对...有害处擅长于做某事be goodat+n/doing=do wellin+n/doing.对某人友好begoodto sb.=be kindto=be friendlytosb【记】The boyis goodme.Heisgood English,andhetells meoralpractice isgood improvespoken English.

38.Dr.Alice Greensays alltheseactivitiescan causea lotof stressfor children.爱丽丝.格林医生说所有的这些活动也许给孩子们带来诸多压力【解析】导致，使发生cause v.使某人做某事⑵给某人添麻烦1cause sb.todosth causesb.for sb.

①She alwaystrouble people.A.cause;to B.cause;for C.causing;to D.causing;for

②Every yeardriving afterdrinking winea lotof trafficaccidents.A.happens B.provides C.causes【拓展】辨析cause,reason,excuse原因，指导起某种成果的原因”,后接介词lcause n.of..事故的原因是他开车开的The causeoftheaccident wasthe factthat hewas drivingtoo fast太快⑵理由，原因，指决定做某事或采用某项行动的理由reason n.他开The reasonhewasdriving sofast wasthat hedidnt wantto missan importantmeeting.车如此快的原因是他不想错过一种重要的会议⑶辩解，借口，指对某种行为所做的解释，可以是真的，也可以是托词excuse n.他为自己开快车找了一种堂皇的借口He madea goodexcuse forhis driving.What theflowers todie A.made B.had C.caused D.getDo youoften troubleyourparentsA.get;into B.pay;for C.cause;for D.give;to我认为，对于孩子们/父母来

40.Perhaps children/parents should/could或许孩子们/父母应当/也许.......【解析】也许；也许perhaps【拓展】辨析意为“也许，也许，一般指比较perhaps,probably,possibly,maybe lperhaps小的也许性也许我后天去Perhaps Iwill seehim theday aftertomorrow,but Iam notsure.看他，不过我不能确定⑵很也许，大概”，其也许性最大，表达一种几乎完全肯定的意思probably他很也许会拒绝这份提议He willprobably refusethe offer.⑶意为“也许，或许，也许，也许性较大possibly.我今天要见你，不过也也许是明天111see youtoday,or possiblytomorrow⑷”或许，大概”，重要用于非正式场所，常用在口语中，语气比轻maybe perhaps或许你把信放在你的篮子里了Maybe youput theletter inyour basket.这是疯狂的

42.Does CathyTaylor thinkits importantfor kidsto joinafter-school activities凯西.泰勒认为对于孩子们而言参与课文活动重要吗？【解析】Its+adj.easy,difficult,important,necessary+for sb.todosth【注】若形容词表达事物特性的,如:须用介词【形容物，用easy difficult,hard Jmportant^,for】forIts+adj kind,honest,friendly,+of sbtodosth.【注】若形容词表达人的性格、品质与特点，如等，用介词good,kind,nice,wrong【形容人用】0f ofo【山东东营】Its veryconvenient usto buytrain ticketsnow becausewe canbuy

①them eitherfrom thestation orontheInternet.A.to B.of C.by D.for Itsimportant foruslearnEnglish well.

②Its hardfor usfinishthis taskin twodays.

③Its verynice youtohelpmealot.A.for B.ofC.in D.on4-Ifs veryofyouto workout theproblem forme.A.kind B.polite C.clever D.easy持续发生

43.keep onhappening【解析】继续做某事让某人一直做某事跟上keep ondoing keepsb.doingsthkeep upwith。