八年级下册英语知识点大总结

句，此时相当于nomatterwhen,意为“无论何时”。wherevernomatterwhere无论何地whoever=nomatterwho无论何人however=nomatterhow无论怎样whatevernomatterwhat无论什么中考再现canchoosetovisitKunming theylike spring,summer,autumnorwinter.A.whoever B.whatever C.whenever D.wherever现在完成时和一般过去时的区别是这一动作与现在的关系，如对现在造成的结果或影响等；而一般过去时只表示动作在过去某一时刻发生，不强调和现在的关系。延续的时间状语连用，或没有时间状语。一般过去时的时间状语：yesterdaylastweek,…ago,in1980,justinthepast等故去时间。现在完成时的时间状语：since,sofar,ever,never,just,yet,till/untilnow,uptonow,inthepasttwoyears/moths,already,recently,lately,once等。Ihavelostmynewbook.我把我的新书丢了。（现在还未找到）Ilostmynewbookyesterday.我昨天把我的新书丢了。（昨天丢的，现在找到与否没说明）中考再现：Sofarthey tospeakGerman,French,ChineseandArabic.A.haslearnt B.learnt C.havelearnt D.learningI cleaningmyroom.cleanwhen you it?A.havefinished;did;finish B.finish;do;finishinvent意为“发明”，是发明或创造先前不曾存在的东西discover意为“发现；查明”，多指发现先前已经存在的东西findout意为“发现，查明”，同discover,多指发现某个事实、真相或者较invent意为“发明”，是发明或创造先前不曾存在的东西discover意为“发现；查明”，多指发现先前已经存在的东西findout意为“发现，查明”，同discover,多指发现某个事实、真相或者较为抽象的东西find意为“发现，找到”，多指具体的物品，强调“找”的结果lookfor意为“寻找；找”，强调“找”的过程Unite10 I’vehadthisbikeforthreeyears.1.howlong表示“多长时间”，对时间段进行提问，答语通常是“for…”或“since…”结构的时间段howoftenusuallyoften等onceaweek,twiceaweek等表示频率的短语howsoon表示“还要多久”，通常用在一般将来时中，答语通常是in+时间段中考再现： haveyoustayedinBeijing? Formorethanfivemonths.A.Howoften B.Howlong C.Howfarsince引导时间状语从句，从句多用一般过去时，主句多用现在完成时。e.g.:Shehasworkedinabanksincesheleftschool.中考再现：MissLinhastaughtusEnglish wecametothisschool.A.for B.since C.before D.whennolonger(通常放在行为动词之前，be动词之后)=not…anylonger nomore=not…anymore都意为“不在”，但是当涉及数量和程度时，要用后者。e.g.:Afterherfatherdied,shenolongerwenttoschool.=Afterherfatherdied,shedidn’tgotoschoolanylonger.Thereisnomorebread.one’s+序数词+birthday “某人……岁生日”onone’s+序数词+birthday “在某人……岁生日时”中考再现：Howmanyfriendswillcometoyour birthday?About .A.fifteen;fifteen B.fifteenth;fifteenthC.fifteen;fifteenth D. fifteenth;fifteentobehonest老实说，说实在的totell(you)thetruth 说实话 tobefrank坦率地说honestadj.诚实的 honestlyadv.诚实地honestyn.诚实 dishonestadj.不诚实的中考再现：Peterreturnedthewallettothepolice.Hewas honestA.a B.an C.the D.不填6.search的对象searchfor当没有“搜的对象”只有“寻找的目标”时，则要用searchforsearch…for强调有具体搜查对象且有具体目标Tomsearchedeveryroominthehouse.AllnighttheysearchedforMike.ShesearchedalltheshopsforJim’she+序数词+century 在某世纪inthe+年代+of+the+序数词+century 在某个世纪某个年在20世纪 inthetwentiethcentury在20世纪90年代 intheninetiesofthetwentiethcenturyaccordingto根据，按照，后接代词或名词Accordingtotheradio,itwillraintomorrow.especially作副词,意为“尤其，特别，格外”。IloveRome,especiallyinthespring.中考再现：Becarefulwhenyouaredriving, inarainstormlikethis.Thanks.IwillA.seriously B.exactly C.especially D.probablyconsider注视，仔细考虑 +n./doingsth.考虑某事/做某事Wemustconsiderthefinalresults.WeareconsideringtravelingtoEurope.中考再现：Idon’tknowwheretogothissummervacation.Whynot visitingHuanggang?Therearemanyplacesofinterest.A.suggest B.wonder C.consider D.regard重点难点全解现在完成时注意事项：sine（一般过去时，主句也可以不用现在完成时。Itistwoyearssincehisfatherdied.=Hisfatherhasbeendeadfortwoyears.和一段时间的状语连用。Ihaven’tleftheresince1997.1997年以来，我一直没有离开过这儿。常见的需要转换的动词：leavebeaway(from)beginbeonbuyhaveborrowkeepdiebedeadjoinbeamember+介词短语becomebeopenbeopenSheleftherhometownfiveyearsago.=Shehasbeenawayfromherhometownforfiveyears.中考再现：canwegiveawaythesesofttoys?themforfiveMom,butIwanttokeeptheA.bought B.had C.havebought D.havehadPremierZhouEnlai formanyyears,buthestilllivesintheheartsofChinesepeople.A.died B.wasdied C.hasbeendied D.hasbeenMike fromhishometownsincetenyearsago.A.left B.hasleft C.hasbeenaway D.willleavebetween;among的区别between是副词或介词，意为“