八年级英语下册Unit 3 知识讲解Word格式文档下载.docx

1、2hen后通常用表示暂短性动词，hile后通常用表示持续性动词，因此它所引导的状语从句中，谓语动词常用进行时态，如：henthearexpldedIasalingpastit=hileIasalingpastthearitexplded3hen用作并列连词时，主句常用进行时态，从句则用一般过去时，表示主句动作发生的过程中，另一个意想不到的动作发生了。如：Iasalinginthestreethenseneallede我正在街上走时突然有人喊我。4hen作并列连词，表示“（这时）突然”之意时，第一个并列分句用过去进行时，hen引导的并列分句用一般过去时。IastaingaalhenIethi我正

2、在散步，突然遇见了他。eereplaingutsidehenitbegantrain我们正在外边玩，这时下起雨来了。二情态动词4、情态动词表示“应该”、“必须”（shall,shuld,a,ight,ust,ughtt）（1）shall和shuld用于表示“必须”：Eahebershallearanaeard每一个会员必须配带名卡。Ishuldanserhisletterassnaspssible我应该尽快给他回信。ushuldntudgeaanalasbthelthes你不应该总是以貌取人。Therulesshalltaeeffetnan1st新规则于一月一日起生效。（2）a和ight用于表

3、示“应该:Paentabepaidbhe应以支票付款。uightasbefreuuseputer你应该先问过再使用我的电脑。（3）ust用于表示“必须”、“务必”：uusteeptheplaelean你务必保持地方干净。eustberders我们必须服从命令。ustIpan?我现在就得付款吗？、情态动词表示“意图”、“打算”（1）ill和uld用于表示某种意图：Illalluassnaspssible我会尽快打电话给你。illuaeptthisinvitatin?你愿意接受这邀请吗？hilldtheb?谁愿意做这事？entstaheretlng我们不愿呆在这里太久。（2）shall和shuld

4、用于表示说话人的意图：eshantgifitrains如果下雨，我们就不打算走了。Ishantgithu我不打算和你一同走。6、情态动词表示“意愿”（ill,uld,shall,shuld）（1）ill和uld：Sheillditifuasher如果你问她，她会做的。ulduhaveantherupftea?你想再来一杯茶吗？illuhaveseies?你想吃些烤饼吗？Ifheill,heandit如果他愿意，他会做的。ulduexusee?你能原谅我吗？（2）shall和shuld：Heshallgethisallane他会拿到他的津贴的。ushuldsithereaslngasulie只要

5、你乐意，坐多久能行。Shallugtshlithe?你愿意和我一起到学校去吗？三重点词汇utv切；剪；割uthair理发BearefulDntuturself小心，别切到自己。2alienn外星人Nbdnshethertherearealiensrnt没人知道到底有没有外星人。AnaliengtutftheUF一个外星人从不明飞行物里出来。3landv登岸；登陆；降落Theplaneilllandinteninutes飞机将在十分钟后降落。AUFlandedintheiddlefthefield一个不明飞行物降落在田野中间。4hilen当的时候；在之时hileIdaned,shesang我跳舞

6、，她唱歌。hileheassinging,Iasplaingbaseball他当时在唱歌，而我在打棒球。rightadv正好；恰好Theaidenthappenedrightverthere事故正好发生在那里。Helivesrightintheenterftheit他恰好住在市中心。6surprisedad惊奇的；吃惊的Iassurprisedthatheaslatefrthepart我很惊讶他聚会居然迟到了。SheassurprisedthatIdidntnabutthat她很吃惊我竟不知那事。7idv欺骗；哄骗Intiddingu我没有骗你。ureidding=Nidding别开玩笑了。8

7、anhereadv到处；无论哪里（用于否定句和一般疑问句中）Diduganhereesterda?你昨天去没去过什么地方?Thedidntganherethedabefreesterda他们前日天哪里也没去9happenv发生Afunnthinghappenedinthesubaesterda昨天地铁里发生了一有趣的事。hathappenedthinthatda?那天他怎么了？（发生了什么事？）sthhappent+名词发生于身上Shehpednthingbaduldhappenthi她希望不会有坏事发生在他身上。0getutf从出去Shetriedtgetutfhelpingherther她

8、尽量逃避帮助她的妈妈。Tgtutftheliftandaledtthestatin汤姆走出电梯然后往车站走去。1runaa跑开；迅速离开；逃走Thethiefranaahensenentiedhi当有人注意到他的时候，那个贼立刻逃走了。2atthedtrs在诊所；在医院thiningfgingtthetailrs在表示诊所、店铺或某人的家时，经常用名词所有格的形式。rls=rlslthesstreatasns=atasnsstreSheisstaingatars她住在玛莉家。Ianttgtthetailrs我想到裁缝店去一趟。3seesbDsth看见某人做某事shesathealiengetu

9、t她看见外星人出来四词语辨析、infrntf与inthefrntfinthefrntf在的前面（表示“有距离的前面”，在一个参照物的前面）eg:Thereisaarinfrntfthehuse房子前日面有一辆车在的前头，前排（列）（在一个范围内的前面部位）egShesatinthefrntfthebus她坐在公交车的前排2、getutf与getint是反义词getint走进，进入Hegetutfthearandgetintthebuilding3、beaazing与beaazedbeaazing令人惊奇的（修饰事物的，指某事令人惊奇，比surprising更具意外性Shehasanaazing

10、talentfrusi她在音乐方面有惊人的才华。Isntthat那不很令人意外吗？beaazed（某人）对大感惊讶eereaazedatthenes=eereaazedthearthenes我们对这个消息感到非常惊讶4、besurprising与besurprisedbesurprising令人惊奇的（用法与beaazing一样，也是修饰事物的）asurprisingending一个令人惊奇的结局besurprised（某人）对感到惊奇，用法与besurprised一样，也是人作主语。egTheeresurprisingthatheasbadlhurtintheaudient他们很吃惊他在那次

11、事故中伤得很重。、inatree与natreeArethereanbirdsinthetree?树上有些鸟吗？natree在树上（指长在树上的东西）L!Thereareanapplesnthetree6、flighttNer与fltNer前者是一个名词短语，后者是一个动词短语。egHerflighttParisistaingffat2pSheisflingtParisat2p五文解释：uaniaginehstrangeitas!你可以想象这事有多惊奇！eguaniaginehfastheruns!2Iflledittseehereitasgingfllsbtdsth跟随去做rhiteflled

12、hisifetseehatashappeningthere3ShedidntthinabutlingutsidethestatinThinabutsth她未想到去车站外看看4satsb对某人satneself自言自语Hesaidthiself,“Dntbeafraid”他自言自语,“不要害怕”lfr寻找（强调找的“过程”）find找到（强调找的“结果”）Heledfrhislsteeverherebutuldntfindit6Itasdiffiulttgetutfbed从床爬起来很难。Itisdiffiult/hardtdsth做某事很难。Hefundthatitasdiffiulttlear

13、nphsisell7beilled被杀害bedestredb被摧毁8alhetgetherinsilene沉默着一起走回家insilene状语（状态）9Ntalleventsinhistrareasterribleasthis并不是所有的历史上的大事都像此事这样可怕。Ntall并不是所有的（部分否定）Asas与一样0beethefirsthineseastrnautinspae成为中国首位进入太空的宇航员1HisflightarundtheEarthLastedabut22hurs他的环绕地球的飞行持续了22个小时。2Duthinsthgdaneutfsthterrible?你认为坏事能变为好

14、事吗？检测练习：一选择填空：1hups_inurlass?AfarBfartherfarthestDlnger2uusthave_Bene,andsheisaverfaussingerhsangasngfrthe77thAnnualAadeAardsAheardfrBheardheardnDheardabut3eusthurrup,andtheplaneill_infiveinutesAleaveBgtaeffDlandsn4Ted_hilehe_hisbileandhurthiselfAfell,asridingBhadfallen,rdefell,ereridingDhadfallen,a

15、sridingThereprtersaidthattheUF_easttesthenhesaitAastravelingBtraveledhadbeentravelingDhastraveled6henIarrivedathisffie,he_nthephneAspeBasspeainghadbeenspeaingDhadspen7Hisputeris_expensive_TsAas;asBs;uh;asDas;than8T_intthehusehennne_Aslipped,aslingBslipped,hadledhadslipped,ledDasslipping,led9Shesaids

16、heapaperiteat7:00esterdaAaesBisaingillaeDasaing0InthephnehenafriendentintabarbersshpAtaledBastalingtalDistaling11hatabutretreesteeptheairlean?AtplantBplantplantingDplanted12hentheUFt,thegirlasintheshpAutBffnDup3ItillbetrutthisprbleinseearsAenugheasBeasilenugheasenughDvereasil14HIasatthattie!Asurpris

17、edBsurprisesurprisingDsurprise1IasrruveissedthetrainItteninutesagAleftBasleavingillleaveDleaves16hnasalingtshl,hesaaatinatreeABeauseBSinehileDIf17therftenasseearlAgetupBgtupgettingupDtgetup二根据所给情况，用shuld或shuldnt+下列短语造句：gaafrafedasgtbedslatelfrantherbputsepituresntheallstaeaphtgraphuseherarsuh1She_2u

18、_3He_4u_He_三连词成句：1as,hile,aling,I,sa,t,I,a,in,at,shl,a,tree_2hile,aling,as,ar,the,explded,past,I,it3said,he,living,he,in,as,Lndn4I,speaing,t,u,u,the,ere,hile,sa,teaherI,at,TV,8p,as,esterda,athing四阅读理解PepleliveallverrldThelivenlandthatislThelivenlandthatishighSeliveneartheeanstherslivefarfrtheeansEar

19、thhasandifferentindsflandsInseplaes,thelandisflatFlatlandsarealledplainsSepartsfEarthhavehillsHillsarehigherthanthelandarundtheButhillsarelerthanuntainsDiduevertrtrideurbileupahill?SepartsfEarthtuheansThesepartsarealledastsSelandshaveaterallarundtheTheselandsarealledislandsEarthhasandifferentbdiesfa

20、ter,tunabuttheeansThereareverlargebdiesfaterTheaterintheeansissaltTherearealssallerbdiesfateralledlaesLaeshavelandallarundtheRiversarraterfrthelandThearelngbdiesfrunningaterTheaterinriversisntsaltstlaesdnthavesaltater,either1Pepleliven_landsAhighandsaltBlandhighlandsaltDsaltandflat2Hillsarehighertha

21、n_andlerthan_Auntains/thelandBuntains/laestheland/untainsDlaes/islands3Selandsithaterarundthearealled_AhillsBuntainsflatsDislands4hatstheeaningftherd“ast”?A海岛B海岸海洋D海滩ArdingTthepassage,hihsenteneisTRUE?ATheaterinriversandlaesissaltBTheaterineansandalllaesissaltTheaterineansandselaesissaltDTheaterinea

22、nsandflaesissalt参考答案：一1根据题意应用副词的最高级。2D听说过某人用hearabut,heardfr接到某人的信。3起飞。4AA6B7Aasas中间用形容词的原形。8A9D0B2B4AA67D二Sheshuldgaafrafedas2ushuldlfrantherb3Heshuldntgtbedslate4ushuldtaeaphtHeshuldputsepituresnthealls三hileIasalingtshlIsaaatinatree2hileIasalingpastthearitexplded3HesaidheaslivinginLndn4Isauhileuerespeaingtthet