as用法小結(jié)PPT課件

.,1,高三英語專題復習,襄樊市第三十六中學,DAVILD110,AS的用法小結(jié),.,2,1、表示方式、程度、情況。意即“照方式、如同、象”TheydidasIhadasked.他們是按照我的要求做的。2、表示時間，意為“當時候”，“一邊一邊”“隨著”Ashegrowolderhegainedinconfidence.隨著年齡的增長他的信心增強了。3、表示原因，意為“因為，由于”Asyouwereout,Ileftamessage.你不在，所以我留下了一張字條。4、表示讓步，意為“盡管；雖然；即使”（表語一般放在本從句之首；如有可數(shù)名詞單數(shù)，前面也不要冠詞）Childasheis,hecantellblackfromwhite.盡管他是個孩子，但他能夠分辨黑白。Happyastheywere,therewassomethingmissing.盡管他們很快樂，但總?cè)鄙冱c什么。,.,3,5、引導定語從句1）as引導非限制性定語從句，常指主句所表達的整個事情，可置句首、句中、句末，常見asweallknow,asIseeit照我看來，asitappearstome依我看來。Asweallknow,oceanscovermorethan70percentoftheearth.正如我們所知道的，海洋占地球面積70以上。,.,4,as用法歸納,as一詞在高中課本中，看起來簡單，但用法很多，經(jīng)常出現(xiàn)，而又不易掌握。主要表現(xiàn)在詞性多，詞義廣，用法靈活?，F(xiàn)將其用法歸納如下：,.as作副詞，表示程度，意為“同樣地”。在“asas”,“notasas”結(jié)構(gòu)中的第一個as是副詞，作“和/與(不)一樣”解。e.g,Jackisastallashisfather.HedoesntspeakEnglishas/sofluentlyasyou.,.,5,.As作連詞，主要引導以下狀語從句：,1.引導時間狀語從句。與while意義相近，強調(diào)兩個動作同時發(fā)生；或某事一發(fā)生，另一事立刻發(fā)生。e.gHeshoutedaloudasheranalong.Iwasstartledasheopenedthedoor.Wegetwiseraswegetolder.,2.引導原因狀語從句，與because的用法相近。,e.g,Asitwasgettingverylate,wesoonturnedback.Wemuststopwritingnow,asIhaveratheralotofworktodo.,.,6,3.引導方式狀語從句，作“正如，好象，按照”解。主要的句式有asif(asthough);justas;justasas.e.g,WheninRome,doasRomansdo.Wedofarmworkastheoldpeasantteachesus.Whenapencilispartlyinaglassofwater,itlooksasifitwerebroken.As(itis)inyourcountry,wegrowwheatinthenorthandriceinthesouth.正如(像)你們國家一樣，。,4.引導條件狀語從句。主要句式有：,aslongas/solongas只要,.,7,e.gAslongasyoustudyhard,youwillmakegreatprogress.,5.引導讓步狀語從句；作“雖然，盡管”解。這時從句常用倒狀語序，即把從句中的表語,狀語或動詞原形放在as之前。e.g,Childassheis,sheknowsalot.Thoughsheisachild,sheknowsalot.Busyasheis,heinsistsonstudying.Thoughheisbusy,he.Tryashemight,Tomcouldnotgetoutofthedifficulties.Thoughhemighttry,Tomcouldnotgetoutofthedifficulties.,.,8,.As作關(guān)系代詞,1.,引導限制性定語從句，用在“suchas”,“thesameas/thesameas”等結(jié)構(gòu)中，常譯作“像一樣的人或物”，“凡是的人或物”。e.g,HewishedtobesuchamanasLeiFengwas.,Mybikeisthesameasyours.,2.引導非限制性定語從句，用來指代它前面的整個句子(即先行句)，意思是“這一點”。這個分句可以放在句首，句中，或句末。e.g,Thiselephantislikeasnake,asanybodycansee.,.,9,Asiswellknown,oceanscovermorethan70%oftheearth.,3.,若非限制性定語從句位于句首，句中或句末，則用as來引導。e.g,Asweexpected,hecompletedhistaskwithgreatsuccess.,ThecompasswasinventedinChina,asweknownow.,4.,若非限制性定語從句中的謂語動詞是besaidbeknown,beexpected,bereported,beannounced等結(jié)構(gòu)時，不論是在句首，句中，句末，都必須as用來引導.e.g,Asisknowntous,TaiwanisapartofChina.,.,10,.As作介詞,1.作“如，像”解。e.g,Theygotunitedasoneman.Shespokeofmeasherclosedfriend.,2.作“充當，作為”解。e.g,Asawriter,hewasfamous.EnglishisspokenasthefirstlanguagebemostpeopleinAustralia.,3.As作為介詞，常和以下動詞連用。,regardas/beknownas/considerasuseas/describeas/berememberedasworkas/actas/behonoredas/,Weregardthesunasthesourceofmostformsofenergy.,e.g,.,11,.含as的固定詞組,1.,assoonas引導時間狀語從句。So/asfarasIknow在句中作插入語。意思是“據(jù)我所知”。,e.g,As/SofarasIknow,hewillcomeherenextMonday.,Aswellas并列連接詞組，意思是：“和，同”。當其連接兩個并列主語時，謂語動詞應與前面的主語在數(shù)上保持一致。也可以和短語notonlybutalso進行替換。e.g,2.,Myparentsaswellasmyeldersisterenjoymusic.試比較下面句子。,Myeldersisteraswellasmyparentsenjoysmusic.,.,12,TomstudiesJapaneseaswellasChinese.,TomstudiesnotonlyChinesebutalsoJapanese.,aswell譯為“也，還”經(jīng)常放在句尾。與too,also同義詞。e.g,3.,Comehereearly,andbringyourbrotheraswell.,Soastodosth./soastodosth.引導目地或結(jié)果狀語。e.g,4.,Hestudieshardsoastopasstheexam.Hewassostrongastocarrytheheavybox.,5.,suchas意為“例如，諸如”可用來引入同位語，舉一例或數(shù)例說明它與之同位詞的詞所含的具體內(nèi)容。,.,13,e.g,Therearedifferentformsofenergy,suchasheatenergy,lightenergy,soundenergyandetc.,6.,asto(=asfor/asregards)關(guān)于，至于asmuchas/asmanyas“多達，達到至多”e.g,Thereisnodoubtastohishonesty.Hecanearnasmuchas500dollarsaday.,7.,asaresult/asaresultof(由于的結(jié)果)asawhole(就整體來說)/asfollows(如下)asusual(照常)/asa(general)rule(通常)asamatteroffact(事實上)/asabove(如上)assoonaspossible/asearlyaspossibleasquicklyaspossible,.,14,Moreexamples:,Shediedasaresultoftheaccident.Thereasonsareasabove(asfollows).Themachinerunsasusual.Asamatteroffact,airisagas.Hisfathergetsupea