新版新目标英语八年级上册Unit_3第4课时学案

Unit3I’mmoreoutgoingthanmysister第4课时学案【课题】Unit3I’mmoreoutgoingthanmysisterSectionAGrammar---3c教师复备栏或学生笔记栏【学习目标】比较级的进一步运用【学习重点难点】示比较含义的句型的了解【学法指导】1.Reading;2.Writing;3.Pairwork【教学过程】【教学过程】导入（启发探究3分钟）Listthethingsthatarethesameanddifferetbetweenyouandyourpartner.ThesameDifferentWe’rebothgirls.I’mtallerthansheis.二、自学（自主探究6分钟）语法知识：IsTomsmarterthanSam?No,heisn’t.SamissmarterthanTom.IsTaramoreoutgoingthanTina?No,sheisn’t.TinaismoreoutgoingthanTara.Areyouafriendlyasyoursister?No,I’mnot.I’mfriendlier.DoesTaraworkashardasTina?Yes,shedoes.Who’smorehardworkingatschool?Tinathinkssheworksharderthanme.1.Icandotheworkbetterwith__________money.A.moreB.lessC.fewerD.much2.I’m__________quieterthanSusan.A.littleB.fewC.alittleD.afew3.Thewatchisnot__________beautifulasthatone.A.veryB.tooC.soD.more4.HisFrenchisn’tsogoodas__________.A.herB.sheC.hisD.hers5.It’smuchbetterthan__________classes.A.haveB.hasC.tohaveD.having三、交流（合作探究10分钟）Step3a1.readthewordsinthebox,andknowtheirmeanings2.makeupthesentencesandfinishthetask.3.checktheanswers.4.readthesentencesaloudbythestudents.Step3b1.readthewordsinthebox,andknowtheirmeanings2.answerthequetionsandfinishthetask.3.checktheanswers.4.readthesentencesaloudbythestudents.5.Step3c1.readthewordsinthebox,andknowtheirmeanings2.makeconversationsinpairs.3.actouttheconversations.4.underlinesomephrases:四、（引深探究15分钟）形容词与副词的比较级（一）原级比较1.由“．．．as+形容词+as．．．”或“．．．as+形容词+名词+as．．．”构成。2.由“．．．notso(as)+形容词+as．．．”或“．．．notso(as)+形容词+名词+as．．．”构成。as...as意为"和……一样"，表示同级的比较。使用时要注意第一个as为副词，第二个as为连词。其基本结构为：as+adj./adv.+as。例如：(1)Thisfilmisasinterestingasthatone.这部电影和那部电影一样有趣。(2)Yourpenwritesassmoothlyasmine.你的钢笔书写起来和我的一样流畅。Mygrandpaisasenergeticasayoungman.Exerciseisasusefulawayasanyothertoloseunwantedweight.ItrytofindasmuchinformationasIcanaboutwhathappened.其否定式为notas/so+adj./adv.+as。例如：Thisdictionaryisnotas/sousefulasyouthink.这本字典不如你想象的那样有用。Luckilytheweatherwasnotsowetasitistoday.若有修饰成分，如twice,threetimes,half,aquarter等，则须置于第一个as之前。例如：Yourbagistwiceasexpensiveasmine.你的袋子比我的贵一倍。（二）.“否定+比较级”相当于最高级。—Waituntilwegetasatisfactoryreply,willyou?—Icouldn'tagreemore.Theideasoundsgreattome.5.“a+比较级+名词（than．．．）”结构常出现在以never构成的完成时态的动词后面。Howbeautifullyshesings！Ihaveneverheardabettervoice.6.倍数表示法：．．．timesas+形容词原级+as．．．；．．．times+形容词比较级+than．．．；．．．timesthe+性质名词+of．．．。Thedininghallisthreetimesaslargeasthatone.Thedininghallisthreetimeslargerthanthatone.Thedininghallisthreetimesthesizeofthatone.（三）比较级应注意的问题1.为了避免重复,常用theone代替单数可数名词,theones,those代替复数名词,that代替单数或不可数名词。2.当比较对象属于同一范围时，需使用other来排除自身，否则会造成与自身相比较的矛盾。CanadaislargerthananyothercountryinNorthAmerica.4.“no+形容词的比较级+than”结构表达对两者均否定。Don'tbeproudsoearly.Youarenobetterthanme．5.比较级前面可以用even,still,yet,any,much,rather,alittle,alot,byfar等修饰语用以加强语气或表示比较程度。Totellyouthetruth,myboyfriendismucholderthanme.五、练评（包含“考点链接”应用探究6分钟）根据句意填入单词的正确形式：1.Mybrotheristwoyears__________(old)thanme.2.Tomisas________(fat)asJim.3.Isyoursister__________(young)thanyou?Yes,sheis.4.Whois___________(thin),youorHelen?Helenis.5.Whosepencil-boxis__________(big),yoursorhers?Hersis.6.Mary’shairisas__________(long)asLucy’s.7.Ben______(jump)________(high)thansomeoftheboysinhisclass.8.______Nancysing__________(well)thanHelen?Yes,she_____.9.Fangfangisnotas_________(tall)astheothergirls.10.Myeyesare__________(big)than________(she)..11.Whichis___________(heavy),theelephantorthepig?12.Whogetsup_________(early),TimorTom?13._____thegirlsgetup_______(early)thantheboys?No,they______.14.Jimruns_____(slow).ButBenruns_____(slow).15.Thechilddoesn’t______(write)as____(fast)asthestudents.【教学反思】