Unit 2 重点解析与练习 人教版英语八年级上册

Unit2Howoftendoyouexercise？短语gotothemovies=gotothecinema看电影onweekends=atweekends(泛指）在周末看电影ontheweekend=attheweekend在这个周末，在本周末usetheInternet使用互联网havelessons上课helpwithhousework帮忙做家务hardlyever几乎从不swingdance摇摆舞watchTV看电视stayup(late)熬夜（到很晚）goshopping去购物playsports=dosports做运动twiceaweek每周两次atleast至少；不少于；起码onceaweek每周一次gotobedearly早睡junkfood垃圾食品gotothedentist去看牙医junkfood垃圾食品everynight每晚（作状语）16-year-old16岁的howoften多久一次alotof许多，大量gocamping去野营freetimeactivities课余活动morethan=over多于teethcleaning洗牙not...atall一点也不fastfood快餐goonline=surfontheInternet上网theanswerto...······的答案lessthan少于afew几个，一些onetothreetimesaweek一周一至三次suchas例如；像······这样mostof大部分oldhabitsdiehard旧习难改havetodo不得不做句型1.Howmanyhoursdoyousleepeverynight?你每晚睡多少个小时？2.Ihavepianolessonstwiceaweek.我每周上两次钢琴课。3.Mymotherwantsmetodrinkmilk.Shesaysthatit’sgoodformyhealth.我母亲要我喝牛奶。她说对我健康有好处。Lastmonthweaskedourstudentsabouttheirfreetimeactivities.上个月我们问了学生有关空闲时间的活动。Wefoundthatonlyfifteenpercentofourstudentsexerciseeveryday.我们发现仅仅百分之十五的学生每天锻炼。Twentypercentsofourstudentsdonotexerciseatall.20%的学生根本不锻炼。Weallknowthatmanystudentsoftengoonline,weweresurprisedthatninetypercentofthemusetheInterneteveryday.我们都知道很多学生经常上网，我们很吃惊他们中有百分之九十的人每天上网。MoststudentsusetheInternetforfunandnotforhomework.大多数学生上网是为了娱乐，而不是为了做作业。9.Theanswerstoourquestionsaboutwatchingtelevisionwerealsointeresting.对我们提出的有关看电视的问题的回答也颇有意思。10.Althoughmanystudentsliketowatchsports,gameshowsarethemostpopular.虽然很多学生喜欢看体育节目，但游戏节目依然是最受欢迎的。11.ItisgoodtorelaxbyusingtheInternetorwatchinggameshows,butwethinkthebestwaytorelaxisthroughexercise.通过上网或看游戏节目来放松很好，但是我们认为最好的放松方法还是通过锻炼。三、重难点讲解1.onweekends意为“在周末”，泛指每个周末，ontheweekend则表示“在这个周末”，特指某个周末；在英式英语中，在周末也可以用attheweekend或者atweekends。2.helpwithhomeworkhelp表示“帮助”时，常用的句型为：helpsb.withsth.帮助某人某事；helpsb.(to)dosth.帮助某人做某事。sometimessometimes是频度副词，意为“有时”，相当于attimes。辨析sometimes,sometimes,sometime与sometimesometimes有时sometimes几次、几倍sometime某时sometime一段时间hardlyeverhardly作副词，表示“几乎不”；hard用作副词表示“努力地、猛烈地”，作形容词表示“硬的、困难的”。howoften意为“多久一次”用来提问频率，常用表示频率的副词或者短语来回答，如twiceaweek,sometimes,everyday,always等。【拓展】辨析howlong,howsoon和howoftenhowlong“多长时间”，提问for和since引出的时间状语howsoon“多久”提问“in+一段时间”howoften“多久一次”，提问动作发生的频率howfar“多远”，提问距离的远近Internet作名词，表示“互联网、因特网”，常用的短语为：ontheInternet“在互联网上”；surftheInternet“上网”。Free作形容词表示“空闲的、有空的”，befree相当于havetime。free作形容词，还可以表示“免费的、自由的”，befreetodosth.“自由地做某事”。Howabout相当于whatabout意为“怎么样”，用来征求对方意见或者询问情况，后接名词或者动名词。haveto表示“不得不、必须”，强调客观需求；must侧重主观上自己认为有必要做某事。Maybe作副词，表示“可能、也许”，常常放在句首，可以与maybe相互转换。stayup意为“熬夜”，表示“为……熬夜”时，用“stayupforsth.”。atleast表示“至少”，反义词为atmost“最多”。begoodfor意为“对……有益”，反义词是bebadfor“对……有害”。health是不可数名词，意为“健康”，ingoodhealth表示“很健康”，形容词为healthy，副词是healthily。asksb.aboutsth.意为“询问某人某事”。here和there置于句首，谓语动词是be动词或者come,go等不及物动词时，主语为名词时，用倒装结构，即主谓调换位置，若主语是代词时，主谓不倒装。Percent表示“百分之……”，常用“基数词+percent+of+名词”，“percentof+名词”作主语时，谓语动词的单复数取决于名词的单复数。not...atall意为“一点儿也不、根本不”；notatall表示“没关系、不用谢”。Online用作副词，表示“在线、联网”，也可以用作形容词，意为“在线的、联网的”。20.Howcome?意为“为什么呢、怎么回事”，用于询问某事为什么会发生，可以单独使用也可以后接陈述句。21.Answer后常跟介词to，表示“……的答案”。Although用作连词，表示“虽然、即使”，相当于though，用来引导让步状语从句。在英语中，although/though和but不能同时出现。23.by可以用来表示方式，意为“通过”，后接名词或者动名词短语。24.way表示“方法”时，后常接动词不定式或者ofdoing作定语。25.suchas一般用于列举同一类人或物中的一个例子，但必须数量少于前面所提及的总数，只能放在所列举的名词前；forexample一般用于列举一个例子，后面经常加上一个句子，位置很灵活，可位于句首、句中，于被列举的事例之间用逗号隔开。sb.spend+时间/金钱+onsth.“在某事上花费多长时间或者多少钱”；sb.spend+时间+(in)doingsth.“花费多长时间做某事”【拓展】辨析spend,pay,take和costspend主语是人spend...onsth./spend...(in)doingsth.pay主语是人payforsth./pay+金钱.forsth.take主语是itIttakessb.+时间+todosth.cost主语是物sth.costssb.+金钱16-year-old意为“16岁的”其中的名词用单数形式，在句中作定语，16yearsold表示“16岁”，在句中作表语。28.however作副词，表示“但是、然而”，常位于句首，后面常常跟有逗号隔开。29.also,too,aswell与either都可以表示“也”，但是用法不同。also放在句中行为动词前，be动词、助动词和情态动词之后。too用于肯定句中，放在句尾，前面用逗号隔开。aswell用于肯定句中，放在句尾，前面不用逗号隔开。either用于否定句句末。30.beafraidof意为“害怕、不敢”，后接名词、代词或者动名词。beafraidtodosth.意为“胆小不敢做某事”。beafraidthat...意为“担心、害怕”。I’mafraid表示“恐怕”。Nonenone表示“没有一个（人或物）”，是all“所有的人或物”的反义词，后常接介词of；另外，none强调某一类人或物数量的多少，常用来回答howmany/much的提问；nobody(noone)/nothing强调个体，常用来回答what或者who的提问。课后练习单选1．—Iusuallygetupatsixo'clockinthemorning.Whataboutyou?—I________getupsoearly.Iusuallygetupat7:00.A．sometimes B．often C．always D．never2．---________timeshaveyouvisitedGansuScienceMuseum?---Onlyonce.A．HowoftenB．HowmanyC．howlongD．Howsoon3．Idon’tthinkfastfoodisgoodforourhealth,soI______gotoMacDonald.A．seldom B．always C．usually D．often4．—Howoftendoyouchatwithyourfriendsonline?—________.I'mbusywithmystudy.Onlyonceamonth B．Foramonth C．Almosteveryday D．Maybeintwoweeks5．---_______doyoubrushyourteeth?---Twiceormoreaday.A．Howsoon B．Howfar C．Howlong D．Howoften6．He______latetowatchafootballmatchlastnight.A．gotup B．stayedup C．putup D．cutup7．Heusually______withhisfriendsafterschool.A．playsthetennis B．playtennis C．playstennis D．playthetennis8．—______doyougohomeamonth?—Once.A．Howoften B．Howmanytimes C．Howlong D．Howfar9．—Whendoyougoshopping?—Iusuallygoshopping______Sundaymornings.A．on B．in C．at D．for10．Theanswer__________thequestionisveryinteresting.A．of B．for C．to D．with11.They________eattoomuchsalt,sotheyarehealthy.A．alwaysB．usuallyC．oftenD．hardlyever12.-Youlooksotired,Sue.-I__________sleptlastnight.Ifeelterriblenow.A．almostB．hardlyC．usuallyD．always13.—Doesyoursisterwatchscarymovies?—She________watchesthem.Infact,sheisafraidofthem.A．alwaysB．neverC．usuallyD．often14.I________gotothetheater,becauseIdon’tlikeoperasatall.A．alwaysB．sometimesC．never15.─__________hoursdoyousleepeveryday？─Ninehours.A．HowmanyB．HowmuchC．HowoftenD．Howlong二、完型填空Inmanycountries,somefamiliesaretoofarfromschoolsforkidstogoto.Soonlineschoolsare1forthem.Studentscanhaveschoolwherever2whenevertheywant.Also,manyonlineschoolscanletstudentsworkat3ownpace.4goodthingaboutonlineschoolsisthattheycangivedifferentclasses.ThereareEnglish,math,science,andhistoryclasses,whilesomeotheronlineschoolsalsogiveclasses5spacescience,French,andzoology.Onlineschoolsalsohavedifferent6waysforkidstomakeuseof.Forexample,manyonlineschoolshavetheirwebsites,andonthesewebsitesstudentscanwatchvideos,listentogivenlessons,orchatwith7liketeachersorotherstudentsfreely.Someonlineschoolshavelive（实时的）classes.Intheseclasses,studentscancallandtalkwiththeteacher.It8thattheyaretalkingfacetoface,9theywillfeeltheteacherthesamefriendlyasinrealschool.Otheronlineschoolsevenhaveonlineclubsforkidstotalkabouttheirhobbies（爱好）.Computertechnology（技术）isamazing.Since2006,thousandsofonlineschoolshavecomeoutintheUS.Onlineschoolsaretherewithyou,butit’s10toyoutodecideifthiskindoflearningisrightforyou.1．A．only B．necessary C．impossible D．perfect2．A．but B．and C．or D．so3．A．their B．they C．them D．theirs4．A．Other B．Others C．Another D．Theother5．A．suchas B．forexample C．however D．asfor6．A．study B．learned C．learning D．studied7．A．some B．someone C．something D．someone8．A．sounds B．seems C．looklike D．feels9．A．because B．though C．if D．unless10．A．own B．left C．down D．Up三、阅读理解Weknowgoodhealthandhappinessareimportantinourlife.Herearesomewaystomakethemeasytoget.•Eatabalanceddiet(吃平衡的饮食).Eatalotoffruitandvegetables,somegrains(谷物)andalittlemeat.•Exercisetwoorthreetimesaweek.•Getenoughsleep.Itisbesttogetatleasteighthours’sleepaday.•Keepyourselfbusy.Thisisgoodbecauseitstopsyoufromhavingbadhabits.Tokeepyourselfbusy,youcanwalkaroundthehouse,spendtimewithyourpet,dosports,orhaveahobby.•Gooutandmakefriends.Spendtimeandhavefunwiththem.Talkwiththem,buttrynottotalkaboutanythingbad.Youshouldstaywiththepeoplewhoarehealthy.Howoftenshouldweexerciseifwewanttogethealthandhappiness?A.Everyday. B.Onceaweek.C.Twoorthreetimesaweek. D.Fivetimesaweek.Weusuallyneedatleast____________hours’sleepaday.A.five B.six C.