八年级英语下册Reviewofunits1—3知识讲解

1、八年级英语下册Reviewofunits13知识讲解Reviewofunits13一.重点词汇1. asas作为连词，引导时间状语从句，“当的时候"，一般用于一般过去时。例如：Asheexploredthesea，hetookalotofpictures.他在探海时，拍了许多照片。还可以引导原因状语从句，只说明一般的因果关系，语气比because弱，说明比较明显的原因，它引导的从句通常放在句首，有时也放在句尾。例如：Asthecarisexpensive，wecantbuyit.由于汽车太贵，我们买不起。Aseverybodyhascome，wecansetoff.既然大家都到了，我

2、们可以动身了。assoonas一就例如：AssoonashearrivedinFrance，hecalledme.他一到法国，就给我打电话。asas表示双方程度相等，"和一样”。基本句式：A、主语+谓语（系动词）+as+原级形容词+as例如：XiaoLiisastallashisbrother.小李和他哥哥一样高。Yourjacketisasnewasmine.你的茄克衫和我的一样新。B、主语+谓语（行为动词）+as+原级副词+as例如：HespeaksFrenchasfluentlyasyou.他说法语和你说得一样流利。WangYingteachesmathsasconscient

3、iouslyashersister.王莹教数学和她姐姐样认真。2. afew;few;alittle;littlefew或afew在句中修饰可数名词，后接可数名词复数;也可用来代替复数名词。其中few表示否定，意为“几乎没有”，afew则表示肯定，意为“有一些”。例如：Fewpeoplelivedheremanyyearsago.许多年前几乎没有人住在这儿。Look!Youmadeafewmistakesinyourhomework.看!你在作业中出了几处错。little或alittle在句中修饰或代替不可数名词。其中little表示否定，意为“几乎没有”，alittle土二止土“士.上”表示

4、肯定，意为“有一点”。例如：Howmuchwinedidhehavelastnight?昨天晚上他喝了多少酒?Justalittle.只喝了一点点。Hungup，wehavelittletimeleft.快点，我们没有多少时间了。alittle还常用来修饰形容词、副词、动词，也可以修饰形容词或副词的比较级。例如：Allofthemfeltalittletired.Sotheystoppedtohavearest.他们都感到有点累，所以他们停下来休息。LucyrunsalittlefasterthanI.露茜跑得比我快一点。3. alittle和abitabit和alittle通常可互换，也可修

5、饰动词、形容词、副词。但在修饰名词时有区别：alittle;而abit则要与of搭配才能修饰名词。如：Pleaseopenthewindows.It'sabithot.请把窗户打开，有点热。Thismorningheonlyhadabitofmilkforbreakfast.今天早上他早餐只喝了一点牛奶。注意：notalittle意为“非常、很多、不少”，相当于very或quite等;而not-abit则表示“一点也不”，相当于notatall等。例如：Theboyisn'tabithungry.那男孩一点也不饿。Theboyisn'talittlehungry.那男孩

6、非常饿。4. besides，except，but这三个词都可以用来表示转折，但是用法有所区别：except与besides用于肯定句时，except意为“除外(不再有)"；besides意为“除外(还有)”：例如：WeallpassedtheexambesidesTom.除了汤姆外，我们也都及格了(汤姆也及格了)注意：besides在句中的位置较活，可放在句首，亦可放在句中或句末；而except多放在句尾。(2)except前几乎总有all，any，every，no及其复合词等词，而besides前面可用也可不用，依句意而定：例如：Heansweredallthequestions

7、exceptthelastone.除最后一个问题没答外，其余问题他都答了。AllofthemwenttoBeijinglastsummerbesidesTom.除了汤姆外，他们去年夏天也都去过北京。(3)except,but,besides用于否定句时，可以互换。如：Therearentanyotherpeopletobeconsideredbesides/except/butyou.除你之外，其他人将不予考虑。Ididntlookanywherebesides/exceptinyourbedroom.除了你的卧室外，我哪儿也没去找。(4)but和except都可以和for连用，构成短语;也可

8、跟that从句做宾语。如：laskednothingfromhimbut/exceptthatheshouldwritetomeeveryotherweek.我只要求他每两周给我写一封信。Youcan'tsucceedintheexambut/exceptthatyouwillworkstillharder.你若不比以前学习更用功些，是不可能考上的。二.重点句型1. Therebe是“某处有某人或某物”的句型表示“存在”，注意：本句型要用就近一致的原则。另外，Therebe句型有一些扩展形式：There+live(lie,stand,come,go)+主语+其它。如：(1)Onceup

9、onatime，therelivedaking.(2)Theregoesthebell.(3)Onthehill(there)standsahouse.注意此句：TherewillhaveaclassmeetingthisThursdayafternoon.是错误的。应将其改为：TherewillbeaclassmeetingthisThursdayafternoon.对therebe句型中的主语提问时，无论主语是单数还是复数都用“Whats+地点状语?”如：Therearefiveapplesontheplate.fWhat'sontheplate?2. tooto,sothat和e

10、noughtodosth.的句式在一定的情况下可以互换。在肯定句中含sothat的复合句可以转换成含有enoughtodosth.结构的句子。如：Heworkedsohardthathefinishedtheworkintime.fHeworkedhardenoughtofinishtheworkintime.IfyoursonfeelswellenoughtowatchTVbythen，hellbefineafterthegame.fIfyoursonfeelssowellthathecanwatchTVbythen,he'llfineafterthegame.(2)在具有否定意义的

11、句中，三者可以相互转换，但应注意tooto在和enoughtodosth.与sothat转换时，应用句中形容词的反义词或将that从句改为否定句。如：Heistooyoungtojointhearmy.fHeissoyoungthathecan'tjointhearmy.或：Heisntoldenoughtojointhearmy.如果sothat结构中主句和从句的主语不是一致的，应在enoughtodosth和tooto结构中的不定式前加上“forsb.(sth.)"的短语。如：Englishissousefulthatallofusshouldlearnitwell.fE

12、nglishisusefulenoughforustolearnwell.ThemathsproblemissodifficultthatIcantworkitout.fThemathsproblemistoodifficultformetoworkout.或:Themathsproblemisnteasyenoughformetoworkout.3. like后既可接动词-ing形式，也可接动词不定式。含意却有所不同。如：HelikesswimminginSummer.(表示习惯爱好)Itsveryhot.Hewouldliketo(havea)swim.(表示具体的一次行为)：hate等也

13、有类似的用法。三.综合检测I.看图，根据句意将单词填写完整。1. Thenewhospitalisabigb_l_ng.2. Somesc_nt_tsbelievethattherewillbesuchrobotsinthefuture.3. Theyhelptheirmotherwiththeh_s_ork.4. Webuyat_k_ttogetaseatonabus，train，orairplane.5. Itsalovelyp_rr_t，isntit?6. Thereisabigk_t_h_ninthehouse.n.单项选择1. Thereisgoingtoasportsmeeting

14、inourschoolnextweek.A.beB.haveC.openD.hold2. Iopenthewindow?Itssowarmhere.A.MustB.WillC.ShallD.Would3. HedoesntknowEnglishbecausehehasstudieditforonlyweeks.A.much，afewB.little，fewC.few，alittleD.afew，alittle4. -isitfromourschooltoBeijing?-Abouthalfanhoursbusride.Shallwegoandvisitit?A.HowlongB.Howofte

15、nCHowfarD.Howmuch5. Thesunisfromusthanthemoon.A.morefatherB.muchfartherC.veryfarD.morefar6. Thereasportsmeetinginourschoolnextweek.A.willhaveB.willbeC.willholdD.was7. Thisfilmisworth.A.readB.readingC.seeingD.toread8. Therearepeopleintheparkduringholidays.A.somanyB.suchmanyC.manytooD.manysuchm.完形填空Af

16、terbreakfastIgotoutmy1，IhadtodomymathhomeworkonSaturday.2Ithinkweneverneedto3mathinourdailylives.4candoallourcounting，can'tthey?Ispentthewhole5doingthemathexercises.Mymotherwatchedmeallthetime.7math!”9homework!10theworldinAt6Ifinishedall!Mymotherwaspleased.ButIsaidinmyheart，“ISoonafter8,Mothersa

17、id,“Wendy，it'salreadytimeforyoutodoyourGeography!HowIlikegeography!IlikeMr.Tomlinson.Healwaystakesushisclass.Mr.TomlinsonaskedustoplanatriptoEgypt.Imademyplan11.It12menearlythewholeafternoon.Motherwasabit13.Sheasked，“Whenwillyoudoyourother14eveningnotwatchingTVbut15homework.1.A.workbookB.note2.A

18、.ThoughB.Because3.A.learnB.teach4.A.ParentsB.Computers5.A.eveningB.afternoon6.A.lastB.first7.A.feellikeB.hate8.A.lunchB.breakfast9.A.FrenchB.English10.A.withB.for11.A.fastB.carefully12.A.tookB.spent13.A.sadB.worried14.A.someB.whole15.A.doB.todohomework?”SoIhadtospendthe.阅读理解C.textD.storyC.ButD.SoC.s

19、tudyD.useC.TeachersD.FriendsC.morningD.nightC.leastD.mostC.loveD.likeC.dinnerD.supperC.geographyD.mathsC.toD.aroundC.carelessD.quicklyC.costD.usedC.happyD.angryC.allD.mostC.doingD.didIt'seightinthemorning.Mr.Robertisfreefromwork.HeisnowlookingthroughalistofTVprogramswithhislittlesonTony.Channel2

20、7:30MorningNews14:40OlympicGames:women'stennissinglefinal15:30ArtsandCultures16:50Cartoon:CrayonShinchan18:20OlympicGames:men'stabletennisdoublefinalChannel99:00ChineseHistory10:30Cartoon:KingLion21:15TravelinginChina22: 30OlympicGames:specialreportChannel89:55OlympicGames:men's100-metre

21、racefinal11:40OlympicGames:theOlympicRings（环）20:40TVserials:Sunrise22:09Film:Spiderman23:57OlympicGram:men'shighjumpfinal1. Mr.RobertplanstowatchTVinthemorningandhedoesn'tshowmuchinterestinsportsandgames.Whichchannelwouldheliketochoose?.A.Channel2.B.Channel8.C.Channel9.D.Channel2andChannel9.

22、2. Atnight，Mr.RobertwantstoknowtheresultsoftheOlympicGamesoftheday，hemaychoose.A.Channel2，women'stennissinglefinalB.Channel2，men'stabletennisdoublefinalC.Channel8，men'shighjumpfinalD.Channel9，specialreport3. Tonylikescartoonsverymuch.Butheisn'tallowedtowatchtheminthemorning.Hehastofi

23、nishhishomeworkfirst.Sowhichprogramcanhechoose?.A.CrayonShinchan.B.Sunrise.C.Spiderman.D.KingLion.4. Tonyisabasketballfan.Whatwillhefeelafterreadingthroughthelist?.A.Surprised.B.Disappointed.C.Interested.D.Excited.5. BywatchingTVtoday，howmanyresultsoftheOlympicGamesfinalscanMr.Robertatleastgettoknow

24、ifhewouldliketo?.A.Two.B.Three.C.Four.D.FiveV.补全对话：A:WhereisTom?B:Hecantcometoschool.A:Whats_12_him?B:He_34_hisbikeand_5_himself.A:Didhehurt_6_?B:Yes，hisleftleg_7_broken.A: Imsorryto_8_that.Didhegoto_9_thedoctor?B: Yes，thedoctortoldhimtostay_10_bedfortwoweeks.参考答案：I.看图1. building2.scientists3.housew

25、ork4.ticket5.parrot6.kitchenn.单项选择1. 此题考查学生句子中的词语搭配。“举行运动会”为holdasportsmeeting，但句中有“there”一词，决定要用therebe句型，表示“某时有”，虽然have也有“有”的含义，但它是“（某人/某物）有”故本题答案为A。2. 此题考查学生对助动词、情态动词的理解。will，shall，would都有征求对方意见之意，语气都很委婉、客气，但它们接的人称代词不同。will，would常接第二人称you，shall接第一人称I和we。故此题答案选Co3. 此题考查学生对little/alittle，few/afew的理解。alittle/little修饰不可数名词，afew/few修饰可数名词。而alittle，afew表示“有点，少数几个”，在句中有肯定含义;little/few表示“少数”，“几乎没有”在句中有否定含义。此题中English是不可数名词，weeks是可数名词，所以答案为A。4. 本题考查疑问词的用法。howlong指时间长短，如twodays;howoften问频