Unit+3+语法精讲精练2026-2027学年人教版英语八年级上册

Unit3语法精讲精练一、核心语法：形容词&副词比较级+as…as同级比较（一）两大句型结构1.比较级句型：A+比较级+than+B含义：A比B更……适用：两者对比，句中出现than1）形容词比较级（修饰名词/系动词后）taller更高的、shorter更短的、slimmer更苗条的、morecolourful更丰富多彩的、moreserious更严肃的2）副词比较级（修饰动作）better更好地、louder更大声地、earlier更早地、harder更努力地、faster更快地例句EmmaistallerthanElla.HerhairisshorterthanElla’s.ElladancesbetterthanEmma.Emmasingslouderthanher.Therearemoreactivitiesthisyear.Itismorecolourfulthanlastyear.2.同级比较：A+as+原级+as+B含义：A和B一样……否定式：A+not+as/so+原级+as+BA不如B……例句Iworkashardasher.Sheisasslimasme.SamisassmartasTom.HeswimsasfastasSally.（二）比较级变化规则规则变化一般直接+er|tall→taller；hard→harder|以e结尾只+r|nice→nicer；late→later|重读闭音节：辅+元+辅，双写尾字母+er|slim→slimmer；big→bigger；thin→thinner辅音+y结尾，变y为i+er|heavy→heavier；serious（多音节特殊）多音节词/部分双音节词：前加more|colourful→morecolourful；serious→moreserious；beautiful→morebeautiful不规则变化good/well→better；much/many→more重点副词原级&比较级fast-faster；early-earlier；hard-harder；well-better（三）关键考点比较对象要一致Emma’shairisshorterthanElla’s.（=Ella’shair，不能写thanElla）much修饰比较级，表示“……得多”muchlarger大得多；muchwarmer暖和得多as…as中间只能用形容词/副词原级，不能加er主谓一致：than前后主语保持对应人称代词：than后可用宾格（thanme/thanher）（四）综合句型模板形容词比较（人/事物特征）主语+be+比较级+than+对比对象EmmaistallerthanElla.副词比较（动作）主语+实义动词+副词比较级+than+对比对象Emmasingslouderthanher.同级肯定：和……一样主语+be/动词+as+原级+as+对象Iworkashardasher.同级否定：不如……主语+benot/don’t/doesn’t+as+原级+as…Sheisn’tasslimasme.二、专项分层训练专项一3a划出加粗比较级，总结用法句子：Therearemoreactivitiesthisyear.Itismorecolourfulthanlastyear.EmmaistallerthanElla,butherhairisshorterthanElla’s.ElladancesbetterthanEmma,butEmmasingslouderthanher.Emmaalwaysgetsupearlierthanme,butIworkashardasher!划出词汇：more,morecolourful,taller,shorter,better,louder,earlier；ashardas专项二3b用括号词写问答（原级/比较级）Q:IsJulieslimmerthanyou?(Julie/slim/you)A:No,sheisn’t.Sheisasslimasme.Q:Areyoumoreseriousthanyourcousin?(you/serious/yourcousin)A:No,I’mnot.Iamlessseriousthanheis.Q:IsTomassmartasSam?(Tom/smart/Sam)A:No,Idon’tthinkso.IthinkSamisassmartasTom.Q:DoesJackswimfasterthanSally?(Jack/swim/fast/Sally)A:No,hedoesn’t.HeswimsasfastasSally.专项三3c用方框词+than完成广州vs温哥华对比词框：large,small,much,warm,coolThepopulationofVancouverwasmuchsmallerthanthatofGuangzhouin2024.Inarea,GuangzhouismuchlargerthanVancouver.ItrainsmuchmoreinGuangzhouthaninVancouver.GuangzhouhasapleasanttemperatureinJanuary.ItismuchwarmerthanVancouverinJanuary.VancouverismuchcoolerthanGuangzhouinJuly.专项四单项选择（比较级&as…as）()1.Thisstoryis____thanthatone.AinterestingBmoreinterestingCmostinteresting()2.Lilyruns____asLucy.AfasterBfastCasfast()3.Mybrotheris____thanme.AslimBslimmerCmoreslim()4.—DoesTomstudyashardasMike?—No,Mikeworks____thanTom.AhardBharderChardest()5.Thereare____booksinthislibrarythanthatone.AmanyBmuchCmore()6.WinterinHarbinismuch____thanGuangzhou.AcoolBcoolerBcoolest()7.Shesingsbetter____anyothergirlinourclass.AthanBasCthen()8.Thisroomisn’tas____asthatbigone.AlargeBlargerClargest专项五句型转换Tomistall.Samistaller.（合并一句，用than）Lisarunsfast.AnnarunsasfastasLisa.（同义句：Annaisn’tfasterthanLisa.）Thiscityismorecolourfulthanthatone.（改为同级否定句）Ella’shairisshorterthanEmma’s.（改为一般疑问句）Igetupearly.Mysistergetsupearlier.（合并）专项六句子改错EmmasinglouderthanElla.____________IamasslimmerasJulie.____________GuangzhouismuchlargethanVancouver.____________Herhairisshortthanmine.____________TomswimsasfasterasSally.____________专项七完成句子今年活动比去年更多。Thereare________thisyearthanlastyear.艾玛比埃拉高，但头发比她短。Emmais________Ella,butherhairis________Ella’s.我和她学习一样努力。Iwork____________her.广州人口比温哥华多得多。ThepopulationofGuangzhouis________thanVancouver’s.七月温哥华比广州凉爽很多。Vancouverismuch________GuangzhouinJuly.专项八口语写作（对比两人/两座城市，至少5句，使用比较级+as…as）范文（对比Emma&Ella）EmmaistallerthanElla,butElla’shairislongert