Unit1Howoftendoyouexercise?知识讲解及练习【重要词汇概览】◆everadv.曾经◆onceadv.一次◆twiceadv.两次◆internetn.互联网◆programn.节目单，（电脑）程序◆hilltopn.山顶◆resultn.结果，成果◆keyn.提醒，提示，线索，答案◆songn.歌曲◆junkn.垃圾，破烂物，废弃的旧物◆milkn.牛奶◆interviewern.采访者◆habitn.习惯，习性◆differencen.不同，差异，区别◆graden.分数，成绩，年级◆althoughconj.虽然，即使，纵然◆unhealthyadj.不健康的，不益健康的◆skateboardingn.溜滑板运动【重要词组概览】◆howoften多久一次◆asfor至于，关于◆junkfood垃圾食品◆eatinghabit饮食习惯◆ofcourse当然◆lookafter照顾，照看◆startwith以……开始◆makeadifference使得结果不同，有重要性◆goshopping去购物◆haveaparty聚会◆gotothemovie去看电影◆onceaweek每周一次◆hardlyever很少◆twiceaweek每周两次◆threetimesaweek每周三次◆watchTV看电视◆onweekend在周末◆dohomework做作业◆alotof许多◆trytodo试图（努力）做某事◆helpsb(to)dosth.帮助某人做某事◆thesameas和……相同◆keepingoodhealth保持身体健康【语法知识聚焦】一般现在时TheSimplePresentTense一般现在时表示现在的状态Heistwelve.他十二岁。Theyareathome.他们在家。表示经常性或习惯性的动作Igotoschoolatseveneveryday.HeplayssocceronSundays.表示主语具备的性格和能力等Shelikesapples.TheyspeakJapanese.Sheismediumbuild.肯定式Iamacleaner.Youareright.He/She/Itishere.We/You/Theyareoutgoing否定式Iamnota…Youarenot…He/She/Itisnot…We/You/Theyarenot…否定式和疑问式Wegotoschoolatseveneveryday.Wedon’tgotoschoolatseven.Doyougotoschoolatseven?Yes,wedo.（No,wedon’t.）否定式和疑问式Hegoestoschoolatseveneveryday.Hedoesn’tgotoschoolatseven.Doeshegotoschoolatseven?Yes,hedoes.(No,hedoesn’t.)一般现在时常和表示时间频度的副词连用。如：often,usually,sometimes,always,never,hardlyever等。1.Ioftenreadbooksintheevening2.Dotheyusuallygotoschoolbybike?3.Hedoesn’tlikemilk.Heneverdrinksit.4.Sometimesmymothergetsbackatfive.一般现在时常和以下时间表达法连用。如：inthemorning,intheafternoon,intheevening,atnoon,atnight,everyday,onSunday(s),atseven等。Dotheyhavemathinthemorning?Shesleepsninehourseverynight.Ittakesmetwohourstodomyhomeworkeveryday.Theydon’thaveclassesonSundays.动词第三人称单数的构成：1、直接加--slook—looksread—readsplay—playsstop—stops2.在字母s,x,ch,sh,o后加--esmiss—missesfix—fixeswatch—watcheswash—washesgo—goesdo--does3.辅音字母加y结尾的动词去y为i，再加--escarry–carriesstudy–studieshurry–hurriescry–cries4.特殊的have--has【语法练习】选择填空()1.---Howoften______sheexercise?----Twiceaweek.A.doB.doesC.doingD.did()2.I______liketodrinkmilk.A.notB.doesn’tC.don’tD.no()3.Goodfoodandexercise______metostudybettter.A.helpB.helpsC.helpingD.tohelp()4.Isherlifestylethesame______yoursordifferent?A.asB.inC.atD.to()5.Ilike____forbreakfast.A.abookB.arulerC.aneggD.asofa()6.The____are$21.A.glassesB.shoeC.tableD.bike()7.Tennis____myfavouritesport.A.areB.isC.amD.be()8.IhaveatennisandmyfriendJim____twotennisrackets.A.haveB.playC.playsD.has()9.“Let’splaycomputergames.”“That____interesting.”A.looksB.soundsC.listensD.reads()10.Myfatherlikesfootball.Buthe____it.Heonly____footballmatchesonTV!A.plays,watchesB.play,watchC.doesn’tplay,watchesD.plays,doesn’twatch【参考答案与解题思路】【参考答案】1.B2.C3.A4.A5.C6.A7.B8.D9.B10.C【解题思路】1.本题考查助动词do和does的用法。在疑问句或否定句中，当主语为第三人称单数时，主动词用does,因此，答案为B.2.本题考查助动词do和does的用法。因为I不是第三人称单数形式，因此，答案为C.3....
