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表示行为方式的状语从句常由as(依照...像....一样）,asif（正如...似乎...),asthough(似乎...,好像....)justas（正如...)引导，多置于主句之后方式状语从句：DrawacatasItaughtyou.按照我教你的画一只猫。Doasyouaretold.按照人家告诉你做的去做。as，按照或正如Theytreattheblackboyasif(though)hewereananimal.他们对待这黑孩子仿佛他是一头牲口。asif/asthough好象,似乎•Hemustdoasthedoctoradvises.•他必须按照医生所说的去做•Leaveasitis•维持原状•Heattendedthemeetingontimeashehadbeentoldtodo•他按照要求，准时出席了会议justas:正如...•Shewenttothebeachwithmejustasshehadpromisedmetodo•正如她所许诺我的，她和我一起去了海滨•Ididitjustasyoutoldme•我正是按照你说的办的asif和asthough(1)两者用法相同，都表示“好像，仿佛”。(2)asif和asthough引导方式状语从句中即可用陈述语气，表示与事实相符的情况;也可用虚拟语气，表示可能性很小的或与事实不符的情况。e.g.①Itlooksasifitisgoingtorain.②Thechildtalksasthoughhewereaman.•Itlooksasiftheweathermaypickupverysoon.•看来天气很快就会好起来。（实现的可能性较大，谓语用陈述语气。）•Heactedasifhewerebrave•他装的好像很勇敢的样子（与现在事实相反，谓语用虚拟语气。）•IfeelasifIwerefloatingonair•我感觉好像漂浮在空中一样（与现在事实相反，谓语用虚拟语气。）•asif/asthough也可以引导一个分词短语、不定式短语或无动词短语，•例如：Hestaredatmeasifseeingmeforfirsttime.•他目不转睛地看着我，就像第一次看见我似的。•Heclearedhisthroatasiftosaysomething.•他清了清嗓子，像要说什么似的。•Thewavesdashedontherocksasifinanger.•波涛冲击着岩石，好像很愤怒。比较状语从句：引导词:as….as(和…一样),notas/so…as(不如),than(比),themore…themore…(越…越…).主要运用于形容词，副词的原级，比较级和最高级的句子之中more...than(...比...更...)themore...of...（两者之中..比较....的）Thisfilmismoremovingthanthatone.这部电影比那部电影感人。Thisfilmisthemoremovingofthetwofilms.这部电影是两部电影中比较感人的。Thisfilmisthemostmovingofthethree.这部电影是三部电影中最感人的。“no+形容词/副词比较级+than”表示“和……一样不……”，相当于“neither……nor”；对于两者的否定，用于两者比较e.g.Sheisnomorediligentthanhersisters.=Neithershenorhersistersarediligent.not+形容词/副词比较级+than”表示“不像/不如...一样”。表示程度上的差异，是普通的比较级结构e.g.Sheisnotmorediligentthanhersisters=sheisnotasdiligentashersisters①HespeaksShanghaidialectnobetterthanI.他和我一样上海话说不好。②Hedoesn’tspeakShanghaidialectbetterthanI.他说上海话不比我说得好。③Thisfairyisnomoreinterestingthanthatone这个童话和那个一样没趣。④Thisfairyisnotmoreinterestingthanthatone这个童话不如那个童话有趣。“nomorethan﹢数词”表示一个确切的数字，意思是“只不过,仅仅”相当于“only”；具有感情色彩，含有“嫌少”的意思，不表示比较如:①Itisnomorethantenminutes'walkfromthestationtothehotel从车站走到宾馆只有10分钟的路程“notmorethan+数词”表示不超过相当于atmost（至多，不超过）。客观的说明一个事实，没有感情色彩，不表示比较①Itisnotmorethantenminutes’walkfromthestationtothehotel.从车站走到宾馆至多10分钟的路程（1）“nolessthan﹢数词”表示一个确切的数字，意思是“多达”相当于“asmuch(many)as”；“notlessthan﹢数词”表示“不少于，至少”，相当于atleast。如：①Nolessthan100studentsenteredforthepopularscienceEnglishcontest.多达100学生报名参加了科普英语竞赛②Notlessthan100studentsenteredforthepopularscienceEnglishcontest.(2)此外，“noless+原级+than”表示“和……一样……”相当于“as…as”；“notless+原级+than”表示“至少不亚于”。如：①HeisnolessquickatfiguresthanI.他对数字反应和我一样快。②HeisnotlessquickatfiguresthanI.他对数字反应之快不亚于我。*其他与比较有关的结构有哪些1.“the+比较级”表示“越……就越……”。Theharderwework,thehappierwefeelThemoreyoustudy,themoreyouknow.2.“比较级+and+比较级”表示“越来越…多音节的形容词和副词就用“moreandmore+原级”。如：①Asitwasgettinghotterandhotter,hebecamethirstierandthirstier.②Shefeltmoreandmoreexcited,evenfrightened.A+基数词+timeas+形容词/副词原级+as+B(A是B的几倍）Thisroomisthreetimesaslargeasthatone这间屋子是那间的三倍大。Thisredboxishalfaslargeastheblueone这个红色盒子是那个蓝色盒子的一半大倍数表达法A+基数词+times+名词/代词+of+B(A是B的几倍）Theageofmygrandpaisfourtimestheageofmine=Theageofmygrandpaisfourtimesthatofmine=MygrandpaisfourtimesasoldasI我爷爷的年龄是我的4倍。A+基数词+times+比较级+than+B(A比B《大，小，长》几倍）Thisholeisfivetimesdeeperthanthatone=Thisholeissixtimesasdeepasthatone=Thisholeissixtimesthedepthofthatone这个洞是那个洞的6倍深。•他们的房子是我们的两倍.Theirroomistwicebiggerthanours.Theirroomistwiceasbigasours.Theirroomistwicethesizeofours.Length/height/weight/width1Just____wateristofish,soairistoman.A.sinceB.whatC.likeD.as2Readingistomind____foodistothebody.A.thatB.whatC.asD.like1.ScientistsgenerallyagreethattheEarth’sclimatewillwarmupoverthenext50to100years____ithaswarmedinthe20,000yearssincetheIceAge.A.solongasB.asmuchasC.aslongasD.aswellas2.Itisgenerallybelievedthatteachingis____itisascience.A.asartmuchasB.muchanartasC.asanartmuchasD.asmuchanartas1.Thelittleboyateabigmeal___hesaidhewasn’thungry.A.ifB.thoughC.becauseD.as2.Theboydoesn'tspeak_______hissister,buthiswrittenworkisverygood.A.aswellasB.sogoodasC.morebetterthanD.moreworsethan3.Ifyou____carefully,you___thereportwell.A.willlisten;willbeunderstoodB.willlisten;understandC.listen;willunderstandD.listen;understand4.-It'stimetodoyourhomework,Jack.-Yes,Mum.I'llturnofftheTVassoonastheprogramme___.A.endsB.endC.willbeendedD.willend5.Catherine_____theletterbeforehermothercameintoherbedroom.A.haswrittenB.waswrittenC.hadwrittenD.iswriting6.—DoyouknowBettyverywell?—Yes,sheandI_____friendssincewemetinGuangzhoulastsummer.A.havemadeB.havebecomeC.havebeenD.haveturned7.MrGreenalwaystellshisdaughterastorybeforeshe______tosleep.A.willgoB.wentC.isgoingD.goes8.—____hasthisfoodstorebeeninbusiness?—Since2001..A.HowlongB.HowoftenB.C.HowoldD.Howsoon