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专心爱心用心1Unit4Howoftendoyouexercise?一、单元目标:1.Wh-问句2.Howoften...?问句3.表示频率的副词4.不定代词all,most,some,none的用法二、重点单词:alwaysadv.总是usuallyadv.通常oftenadv.经常sometimesadv.有时hardlyever几乎不曾;很少neveradv.从不exercisev.锻炼n.练习shopv.购物n.商店skateboardingn.溜滑板运动onceadv.一次twiceadv.两次threetimesaweek一周三次everyday每天milkn.牛奶junkfood垃圾食品drinkv.喝n.饮料三、重点短语:howoften多长时间一次alotof许多lookafter照料trytodosth尽力去做某事startwith以...开始asfor至于makeadifference有重要性doexercise做运动surftheinternet上网四、重点句子1.Whatdoyouusuallydoonweekends?周末你通常做什么?Iusuallyplaysoccer.我经常踢足球。2.Whatdotheydoonweekends?他们周末干什么?Theyoftengotothemovies.他们经常去看电影。3.Whatdoeshedoonweekends?他周末干什么?HesometimeswatchesTV.他有时候看电视。4.Howoftendoyoushop?你经常购物吗?/你多久购物一次?Ishoponceamonth.我一个月购物一次。5.HowoftendoeshewatchTV?他多久看一次电视?/他经常看电视吗?HewatchesTVtwiceaweek.他一周看电视两次。五、重、难点解析:1.Let'slookatthefollowingwordsandtheirusage.频度副词:always,usually,often,sometimes,hardly和never是英语中最常见的频度副词,它们在句中的位置大致相同:通常放在行为动词之前,系动词be、助动词和情态动词之后。但它们所表示的含义及频度是各不相同的。(1)always的频度为100%,表示动作重复、状态继续,中间没有间断,意思是“总是”、“永远地”。例如:Thesunalwaysrisesintheeastandsetsinthewest.太阳总是东升西落。Customersarealwaysright.顾客永远是对的。▲always与进行时态连用,并不强调动作正在进行,而是表示说话人的“赞扬”、“不满”、“厌烦”等情绪,有强烈的感情色彩。例如:Sheisalwaysthinkingofhowshecandomoreforpeople.她总是在考虑怎样为人们多做些事。(表示赞扬)Hewasalwaysaskingformoney.他总是要钱。(表示厌烦)Sheisalwaysaskingforleave.她总是请假。(表示不满)专心爱心用心2▲always与not连用,表示部分否定,意思是“不总是”。例如:Thericharenotalwayshappy.有钱人未必总是幸福的。(2)usually的频度为70%左右,意为“通常”、“平常”,即很少有例外。例如:Heusuallygoestobedatteno’clock.他通常10点钟睡觉。(3)often的频度为50%左右,意为“常常”,但不如usually那么频繁,表示动作重复,中间有间断。例如:Heisoftenlateforschool.他上学经常迟到。▲veryoften语气比often重,常位于句首或句末。例如:Hedoesn’t’tgotoLondonveryoften.他不常去伦敦。(4)sometimes的频度为20%左右,意为“有时”,表示动作偶尔发生。可以位于句首,以示强调。例如:Itissometimeshotandsometimescold.天气忽冷忽热。Sometimeshedoesitthiswayandsometimeshedoesitthatway.他有时这样做,有时那样做。HesometimesgoestomoviesonFridayevening.他有时周五晚上去看电影。(5)hardly的频度为5%左右,意为“几乎不”、“简直不”,常和ever连用表示强调。例如:Ihardlyevergooutthesedays.这些天我几乎不出门。(6)never的频度为0,意为“从来不”、“永不”。例如:Myparentsareneverlateforwork.我父母上班从来不迟到。2.注意sometimes与几个形似的词的区别。(1)sometime是副词,意为“在某个时候”,“某时”eg:Willyoucomeagainsometimenextweek?Shewastheresometimelastyear.(2)sometime是名词词组,意为“一段时间”,做时间状语用eg:Iwillstayhereforsometime.Heworkedonthetroubleforsometime.(3)sometimes是名词词组,意为“几次,几倍”。eg:Imethimsometimesinthestreetlastmonth.Thefactoryissometimeslargerthanthatone.3.不定代词all“所有的,全体的”,most“大部分的,大多数的”,some“一些”,no“没有一个”的用法,这些词可以在句中作主语、宾语、表语或定语。eg:Allthewaitersintherestaurantareverybusy.Allthestudentsinourschoolhavetowearschooluniforms.Iknowmostpeopleinthisparty.Moststudentsplaycomputergamesonweekends.Ginahassomebeautifulscarfs.SomestudentsgotoEnglishmovieseveryday.Nochildrencansingthissong.all,most,some,no放在名词的前面做定语,表示数量的多少。4.疑问词how的用法(1)怎样,用什么手段,方法。Howdidhedoit?Idon’tknowhowtoswim.(2)情况如何(指身体健康状况)Howareyou?How’sitgoingwithTom?专心爱心用心3(3)howmany,howmuch表示“多少”howmany后接可数名词复数,howmuch接不可数名词。Howmanytimesdoyougotothepark?Howmanyticketsdoweneed?Howmuchwaterdoweneedeveryday?Howmucharethosepants?(4)howoften是对动作发生的“次数”提问,询问的是频率“多久一次”回答可以是:Everyday./Onceaweek./Threetimesaweek./Often./...eg:Howoftendoyouplaytennis?Howoftendoyousurftheinternet.(5)Howlong...?询问的是时间长短“多长时间”回答可以是:Aboutonehour./Threehours./Thirtyminutes./...HowlongdoyouusuallywatchTV?你通常看多长时间电视?5.time表示不可数名词,意为“时间”。表示可数名词,意为“次数,倍数”。eg:Whattimeisit?Timeandtideneverwaitformen.Igotothemoviesthreetimesaweek.Thesizeofthenewmuseumisfourtimeslargerthantheoldone.注意“次数”的表达方法一次once,两次twice,三次或三次以上用基数词加上times,threetimes、fivetimes、onehundredtimes.表示“……几次”的表达方法是:onceaday/aweek/amonth/ayeartwiceaday/aweek/amonth/ayear6.Shesaysit'sgoodforhealth.她说它对健康有利。begoodfor意为“对……有好处”,其反义词为“bebadfor”。eg:Drinkingmilkisgoodforyourhealth.Eatingtoomuchsugarisbadforyourteeth.ReadingEnglishisgoodforstudyingEnglish.7.asfor意为“就……而论”,“至于”eg:Asforfruit,Ieatitsometimes.8.Mymotherwantsmetodrinkit.我妈妈想要我喝。wantsb.todosth.想要某人干某事eg:Iwantyoutohelpmewithmymath.我想要你帮我学数学。有很多动词后面用这种结构做动词的复合宾语。如:asksb.todosth.tellsb.todosth.helpsb.(to)dosth.等9.exercise的用法。(1)作可数名词复数exercises。意为“运动、体操”。(2)作不可数名词,意为“练习、习题”。eg:Ihavetodosomuchexercise.Heboughtanewexercisebook.(3)作动词,意为“练习、运动”。eg:—Howoftendoyouexercise?—Iexerciseeveryday.专心爱心用心410.语法:一般现在时的特殊疑问句1)Whatdoyouusuallydoonweekends?2)Whatdoeshedoonweekends?3)Howoftendoyoushop?4)HowoftendoeshewatchTV?5)Howmanyhoursdoyousleepeverynight?一般现在时的特殊疑问句的构成:特殊疑问词+一般疑问句这里的特殊疑问词指what,whattime,where,when,which,who,whom,whose,why,how,howmany,howmuch,howlong,howoften六、课文解析SB.3a…butI’mprettyhealthy.Iexerciseeveryday,usuallywhenIcomehomefromschool.Andmyeatinghabitsareprettygood.Itrytoeatalotofvegetables,usuallytentoeleventimesaweek.AndIeatfruiteverydayandIdrinkmilkeveryday.Ofcourse,Ilovejunkfood,too,butItrytoeatitonlyonceaweek,oh,andIsleepninehourseverynight.Soyousee,Ilookaftermyhealth.Andmyhealthylifestylehelpsmegetgoodgrade.Goodfoodandexercisehelpmetostudybetter.1.pretty表示“十分”作副词用,我们以前学过quite和very也有这种意思。其中它们的程度由浅入深为quite→pretty→very.eg:Heisquiteserious.Itsoundsprettygood.NinacansingEnglishsongsverywell.2.Iexerciseeveryday,usuallywhenIcomehomefromschool.我每天锻炼身体,通常是放学后。3.eatinghabits“饮食习惯”。4.trytodo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