八年级英语下册重要知识点归纳1八年级下册英语重要知识点归纳重要语法:感官性系统词:feel(摸起来)、look(看起来)、smell(闻起来)、taste(尝起来)sound(听起来),后接形容词作表语,不能接副词。构成疑问句或否定句要借助助动词。Thesilkdressfeelssoft.Theflowerslookverybeautiful.Doesitsmellnice?Thesongdoesn’tsoundbenoisy.2.Whatadelicioussmell!多么香啊!感叹句结构:①What+a/an+形容词+单数可数名词+(主语+谓语)!Whataninterestingbookitis!②What+形容词+不可数名词/复数名词+(主语+谓语)!Whatbadweatheritistoday!Whatgoodstudentstheyare!③How+形容词/副词+主语+谓语!Howfastheisrunning!Howdeliciousitsmells!HowImissthedayswespenttogether!我多么怀念我们一起度过日子!3.I’mafraid+句子:恐怕……I’mafraidhehasnotimetoday.4.bedone做好了Isyourhomeworkdone?你作业做好了吗?Dinnerisdone!晚饭做好了!5.haveatry试一试;尝一尝6.haveasweettooth喜好甜食7.thanksfor=thankyoufor+名词/动词-ing。因……而感谢你。Thanksforyourhelp.=Thanksforhelpingme.Thankyouforinvitingmetoyourparty.8.hearfrom…=get/receivealetterfrom…收到……的来信9.can’twaittodosth.迫不及待去做某事Ican’twaittoseeyou.10.人+spend+时间(in)doingsth.。=Ittakes+人+时间+todosth.某人花费多少时间做某事Hespenttwodays(in)readingthenovel.=Ittookhimtwodaystoreadthenovel.11.too也(置于句末,前加逗号)also也(置于居中be或情态动词之后)aswell也(置于句末,前不加逗号)12.beproudof…以……为豪Myparentsareproudofme.13.Howdoyoufeelabout+名词/动词-ing?=Whatdoyouthinkof+名词/动词-ing?你觉得……怎么样?Howdoyoufeelaboutthefilm?=Whatdoyouthinkofthefilm?HowdoyoufeelaboutcomingtoChina?=WhatdoyouthinkofcomingtoChina?14.beafraidof+名词/动词-ing:害怕….Iamafaidofdog/goingoutatnight.beafraidofdoingsth.=beafraidtodosth.害怕做某事对名词或名词短语感叹用what对形容词、副词或动词感叹用how八年级英语下册重要知识点归纳2Sheisafraidofsleepingaloneatnight.=Sheisafraidtosleepaloneatnight.15.Whatdoessb.looklike?某人长得怎么样(问外表)答:short/tall/young/pretty…Whatissblike?某人性格怎么样?(问性格或品质)答:quiet/nice/strict/kind..-WhatdoesyourEnglishteacherlooklike?-Heistallwithpairofglasses.-WhatisyourEnglishteacherlike?-Heisstrictbutfriendly.M2重要语法:现在完成时(一):描述过去已经、曾经或还没有做过某事的经历或体验,对现在造成的影响。结构:have/has+动词过去分词——(否定)haven’t/hasn’t+动词过去分词含义:已经/曾经做过…还没有做过…标志词:already、ever、never、yet、just等。Ihaveseenthemovie.我已经看过这部电影。(我现在了解该电影了。)Hehasalreadyfinishedhishomework.他已经完成了作业。(他可以交作业了)Wehaven’thaddinneryet.我们还没有吃晚饭。(我们现在饿)Haveyoueverenteredaspeakingcompetition?你曾经参加过演讲比赛吗?(变一般疑问句把have/has提到句首)Yes,Ihave./No,Ihaven’t.2.enteracompetition=takepartinacompetition参加竞赛3.helpsb.(to)dosth.帮助某人做某事HeoftenhelpsmelearnEnglish.4.affordsth.买得起某物Ican’taffordthenewbike.affordtodosth.付得起钱去做某事=haveenoughmoneytobuysth.Shecan’taffordtogotoschool.她没钱去上学。5.stoptodosth.=stopandthendosth.停下来去做某事stopdoingsth.停止做某事I’mtired.Let’sstoptohavearest.我累了。让我们停下来休息一下吧!It’stimeforclassnow.Let’sstoptalking.上课时间到了!让我们不要讲话了!6.makeup编写makeupastory编故事makeit/themup(代词要放中间)7.invitesb.todosth.邀请某人做某事8.fifteen-year-old十五岁的(复合形容词中的名词不能加s,作定语)fifteenyearsold十五岁(短语,不能作定语,常作表语)Heisfifteenyearsold.=Heisafifteen-year-oldboy.9.atthemoment=now此刻(常用于现在进行时中)10.have/hasbeento+某地:曾经去过某地(人已经回来,常与次数连用)have/hasgoneto+某地:到某地去了(人未回,不能与次数连用)have/hasbeenin+某地:在某地呆/逗留(常与for+时间段连用)IhavebeentoHongKongtwice.Heisn’therenow.HehasgonetotheUSA.WehavebeeninChinafor20years.11.bedifferentfrom…与…..不同12.findit+形容词+todosth.发现做某事是….的(it是形式宾语,无义,替代后面不定式)Ifinditeasytolearnmaths.我发现学数学很容易。TonyfindsithardtospeakChinese.托尼发现说汉语很难。八年级英语下册重要知识点归纳313.sofar到目前为止(常用于现在完成时)SofarIhavelearnt3,000Englishwords.14.allovertheworld=aroundtheworld全世界15.countdown倒数M31.already已经(常用于现在完成时肯定句句中或句末)Ihavealreadyknownhimyet尚,还(常用于现在完成时否定句或疑问句句末)Hasitarrivedyet?just刚刚(常用于现在完成时肯定句句中)Theyhavejustarrived.2.Whatareyourupto?=Whatareyoudoing?你在忙什么?3.I’mnotsurehowtomakeit.=I’mnotsurehowIcanmakeit.4.That’swhy….那就是……的原因了。5.inorderto+动词原形:为了…Heworkssohardinordertogetthebestscore.sothat+句子=inorderthat+句子:为了…Heworkssohardsothat(inorderthat)hecangetthebestscore.6.thereis——(现在完成时形式)therehasbeen已经有/存在thereare——(现在完成时形式)therehavebeen已经有/存在Therehavebeenmanybuildingsinourvillagesince15yearsago.7.goaround围绕……转8.noneof+名词复数/宾格+动词(单/复形):……没有一个(既指人也指物)noone+动词(单)=nobody(仅指人,不与of连用,常用于who提出的问题)Noneofthestudentsknow(s)theanwer.没有一个学生知道答案。-Howmanypeoplearethereintheroom?–None.一个也没有(强调数量)Nooneknowstheanswer.–Who’sintheclassroom?-Noone.没有人(强调有没有人)9.becalled…被称为……10.asmallpartof……….的一小部分11.communicatewith…与……联系12.finishdoingsth.完成做某事13.writeback回信M4重要语法:1.现在完成时(二):描述一个动作或状态从过去持续到现在乃至将来有多长时间。常与“for+时间段/since+时间点”、sofar、recently(最近)、inthelast10years(最近十年)等表示持续的时间连用,也用于howlong问句中。IhavelearntEnglishfor6years.Hehaslivedheresincehewasborn.Chinahaschangedalotinthelast30years.HowlonghaveyoulearntEnglish?特别注意:在现在完成时(二)中,与“for+时间段/since+时间点”或howlong问句中,动词须为可延续性动词(learn,stay,live…),不能为短暂性动词(buy,borrow,die…),若为短暂性动词则要转换成延续性动词或短语。如:buy–haveborrow----keep/haveleave----beawaydie----bedeadcome/go/reach—beinjointheparty------beintheparty……错误:Ihaveboughtthebikefor3days.(buy为短暂性动词,不能与for+时间八年级英语下册重要知识点归纳4段连用)正确:Ihavehad/keptthebikefor3days.(将buy改为延续性动词have2.(问)--Howlong…?多久…..?(答)---For+时间段/since+时间点。Howlonghaveyoubeenlikethis?你这样多久了?Ihavebeenillforaboutthreedays.我生病大约三天了。3.catchacold感冒haveafever发烧takeone’stemperature测量某人的体温doexercise锻炼fastfood快餐notusually不经常threetimesaday一天三次4.beharmfulto…对…..有害Playingcomputergamesisharmfultoyoureyes.5.bydoing…通过做….decide(not)todosth.决心(不)做某事inexcellent/badcondition身体状况良好/差ridetowork=gotoworkbybike骑车上班arriveat/in=getto=reach到达withasmil