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1、形容词和副词的级：形容词和副词的级：原级、比较级、最高级原级、比较级、最高级Grammar:Comparison of AdjectivesGrammar:Comparison of Adjectives课文中出现的比较级课文中出现的比较级1.Its three times as big underwater.2.Meet our less energetic but more friendly penguins.3.They are less colourful than some other fish but they move beautifully.4.Some fish can pr
2、oduce sounds almost twice as loud as your speaking voice!5.You certainly wont find a noisier fish.6.They have a huge mouth and can eat fish as big as themselves.Exercises1.Bobneverdoeshishomework_2.Mary.Hemakeslotsofmistakes.A.socarefulasB.ascarefullyasC.carefullyasD.ascarefulas2.Nowairinourtownis_t
3、hanitusedtobe.SomethingmustbedonetoitA.verygoodB.muchbetterB.C.ratherthanD.evenworseBD3.Ifeel_betterthanyesterday.A.moreB.veryC.theD.far4.Chinahasalargepopulationthan_intheworld.A.allthecountriesB.everycountryB.C.anycountryD.anyothercountryDD一、基础归纳一、基础归纳1.原级比较：原级比较：用用as+adj./adv.+as,the sameas,sucha
4、s引导引导如：如：Mike is as tall as our PE teacher.否定形式：否定形式：not as(so)+adj./adv.+as;表示表示“不如不如”I am not as(so)tall as Mike;that is to say,he is taller than I.as+可数名词单数可数名词单数/不可数名词不可数名词+as结构结构I dont want as expensive a house as this.He took as much cheese as he needed.“as many/few+可数名词复数可数名词复数+as”或或“as much/
5、little(少的少的)+不可数名词不可数名词+as”。1)You may borrow as many books as you can.你能借多少书就借多少。你能借多少书就借多少。2)“Drink as much water as you can.”the doctor said to him.医生对他说道：医生对他说道：“你要尽可能的多喝些水。你要尽可能的多喝些水。”2.比较级比较级(1)有关结构：有关结构：the+比较级比较级 the+比较级比较级 表示表示“越越越越”-Do you want a big room?-Yes,the bigger the better.-But the
6、 smaller it is,the less it will cost us.比较级比较级+and+比较级比较级 表示表示“越来越越来越”The weather is getting hotter and hotter.He became more and more interested.not+比较级比较级+than “前者不如后者前者不如后者”This book is not more interesting than that one.(=This book is less interesting than that one.)no+比较级比较级+than，是对两个比较对象是对两个比较
7、对象都进行否定，都进行否定，相当于相当于“neithernor”意为意为“两者都不两者都不John is no taller than Tim.(=Neither John nor Tim is tall.)no more than和和not more thanno more than表示表示“仅仅，只有仅仅，只有”，相当于，相当于only；而而not more than表示表示“不多于不多于”,相当于相当于less thanmore than+数字，表示超过，相当于数字，表示超过，相当于over more than 还可表示还可表示不仅仅，不止不仅仅，不止Jason is more than
8、 a teacher;he is a writer,too.more than表示表示“与其说与其说不如说不如说”He is more lucky than clever.(与其说他聪明，还不如说他幸运与其说他聪明，还不如说他幸运.)He is more a scholar than a teacher.(与其说他是位教师，不如说他是位学者。与其说他是位教师，不如说他是位学者。)否定否定+比较级比较级=最高级最高级原句：原句：You certainly wont find a noisier fish.（=the most fish）常见结构：常见结构：not/never +a/an+比较级比
9、较级+n.no/never/nothing +比较级比较级There is not a taller player than him in his team.他是他们队里最高的。他是他们队里最高的。I have done my best;I cant make anything more beautiful out of it.我已经尽力把它弄得最漂亮了。我已经尽力把它弄得最漂亮了。比较结构的修饰语：比较结构的修饰语：(1)修饰修饰比较级：比较级：far,a lot,a great deal,rather,much,still,even,a little,any(常用于否定句或疑问常用于否定句
10、或疑问句句)，置于，置于比较级前比较级前(不可以用不可以用very,quite,too)。You are driving too fast.Can you drive a little more slowly?(2)修饰最高级：修饰最高级：by farThe bridge being built now is by far the longest across the Yellow River.现在正在修建的这座桥是迄今为止跨越黄河的最长现在正在修建的这座桥是迄今为止跨越黄河的最长的桥。的桥。注意：注意：比较对象的逻辑一致性比较对象的逻辑一致性(1)比较对象应该相同比较对象应该相同The we
11、ather here is warmer than that of Beijing.A box made of iron is stronger than one made of wood.(2)若比较范围若比较范围相同相同,两个比较对象中的两个比较对象中的一个与其它相比较：一个与其它相比较：“主语主语+比较级比较级+than any other+单数名词单数名词”“主语主语+比较级比较级+than all the other+复数名词复数名词”“主语主语+比较级比较级+than anyone else”若若比较范围比较范围不同不同，than后应用后应用“any+可数名词的复数形式可数名词的复
12、数形式+其他其他”。China is larger than any countries in Africa.注意：暗含比较级、最高级结构注意：暗含比较级、最高级结构If there is no exams in the school,the students will feel(happy,happier).He is(tall,taller,tallest)in our class.注意：比较级的省略The pianos in that shop will be cheaper,but not as good.那家商店的收音机会便宜些，但质量没那么好。二、特殊结构二、特殊结构倍数的表示方法
13、倍数的表示方法常见的表达法：常见的表达法：1)倍数倍数+形容词比较级形容词比较级+than+比较对象；比较对象；2)倍数倍数+as+形容词形容词+as+比较对象；比较对象；3)形容词比较级形容词比较级+than+比较对象比较对象+by+倍数倍数4)倍数倍数+the+性质名词性质名词+of+比较对象比较对象如：如：This cake is twice bigger than that one.=This cake is three times as big as that one.=This cake is bigger than that one by twice.=This cake is
14、three times the size of that one.1.Didyouenjoyyourselfattheparty?Yes,Iveneverbeento_onebefore.（06四川）A.amoreexcitedB.themostexcitedC.amoreexcitingD.themostexciting2.Ilikethisjacketbetterthanthatone,butitcostsalmostthreetimes_.(08浙江）A.asmuchB.asmanyC.somuchD.somanyCA考题链接考题链接3.AsfarasIamconcerned,educa
15、tionisaboutlearningandthemoreyoulearn,_.A.themoreforlifeareyouequippedB.themoreequippedforlifeyouareC.themorelifeyouareequippedforD.youareequippedthemoreforlife4.Isyourheadachegetting_?No,itsworse.(05全国II）A.betterB.badC.lessD.wellBA5.FourofRobertschildrenwereattheparty,including_,Luke.(03安徽)A.theold
16、estB.anoldestoneC.theoldD.anoldone6.Ataroughestimate,Nigeriais_GreatBritain.(05上海)A.threetimesthesizeasB.thesizethreetimesofC.threetimesasthesizeofD.threetimesthesizeofAD7.Tenyearsagothepopulationofourvillagewas_thatoftheirs.(2008陕西卷)A.astwicelargeasB.twiceaslargeasC.C.twiceasmuchasD.astwicemuchas8.
17、PetersjacketlookedjustthesameasJacks,butitcost_his.（辽宁卷）asmuchtwiceasB.twiceasmuchasC.muchastwiceasD.astwicemuchasBB9.Myuncleshouseinthedowntownareaismuchsmallerthanours,butitistwice_expensive.(四川卷）A.asB.soC.tooD.very10.-Doyouthinktheweatherisgoodenoughforanouting?-Yes,itcouldntbe_atthistimeofthemonth.A.thenicestB.niceC.nicerD.thenicerAC