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as用法归纳as一词用法很多,经常出现,而又不易掌握。主要表现在词性多,词义广,用法灵活。现将其用法归纳如下:Ⅰ.as作副词,表示程度,意为“同样地”。在“as…as”,“notas…as”结构中的第一个as是副词,作“和/与…(不)一样”解。e.g①Jackisastallashisfather.②Hedoesn’tspeakEnglishas/sofluentlyasyou.Ⅱ.As作连词,主要引导以下状语从句:1.引导时间状语从句。与while意义相近,强调两个动作同时发生;或某事一发生,另一事立刻发生。e.g①Heshoutedaloudasheranalong.②Iwasstartledasheopenedthedoor.③Wegetwiseraswegetolder.2.引导原因状语从句,与because的用法相近。e.g①Asitwasgettingverylate,wesoonturnedback.②Wemuststopwritingnow,asIhaveratheralotofworktodo.。When,while,as用法区别1、when从句既可以和瞬间动词(arrive,begin,borrow,lend,go,come,leave,stop,finish,die,join)连用,也可使用持续动词(be,lie,stay,live,study);2、while引导的时间状语从句表示时间的延续,即表示一段时间,而不是瞬间,因此,不能与瞬间动词连用;3、as不能分先后,而指相并发生,尤指短动作或事件同时发生。as还可以说明两种正在发展或变化的情况。A.Whenyoutelephonedme,Iwasdrawingapicture.B.ThetelephonerangwhileIwashavingashower.3.引导方式状语从句,作“正如,好象,按照”解。主要的句式有asif(asthough);justas;justas…as.e.g①WhenatRome,doasRomansdo.②Wedofarmworkastheoldpeasantteachesus.③Whenapencilispartlyinaglassofwater,itlooksasifitwerebroken.★④As(itis)inyourcountry,wegrowwheatinthenorthandriceinthesouth.正如(像)你们国家一样,……。4.引导条件状语从句。主要句式有:aslongas/solongas只要e.gAslongasyoustudyhard,youwillmakegreatprogress.5.引导让步状语从句;作“虽然,尽管”解。这时从句常用倒状语序,即把从句中的表语,状语或动词原形放在as之前。e.g①Childassheis,sheknowsalot.★→Thoughsheisachild,sheknowsalot.②Busyasheis,heinsistsonstudying.→Thoughheisbusy,he….③Tryashemight,Tomcouldnotgetoutofthedifficulties.→Thoughhemighttry,Tomcouldnotgetoutofthedifficulties.Ⅲ.As作关系代词1.引导限制性定语从句,用在“such…as”,“thesame…as/thesameas”等结构中,常译作“像……一样的人或物”,“凡是……的人或物”。e.gHewishedtobesuchamanasLeiFengwas.Mybikeisthesameasyours.①②2.引导非限制性定语从句,用来指代它前面的整个句子(即先行句),意思是“这一点”。这个分句可以放在句首,句中,或句末。e.g③Thiselephantislikeasnake,asanybodycansee.④Asiswellknown,oceanscovermorethan70%oftheearth.3.若非限制性定语从句位于句首,句中或句末,则用as来引导。e.gAsweexpected,hecompletedhistaskwithgreatsuccess.①②ThecompasswasinventedinChina,asweknownow.4.若非限制性定语从句中的谓语动词是besaidbeknown,beexpected,bereported,beannounced等结构时,不论是在句首,句中,句末,都必须as用来引导.e.gAsisknowntous,TaiwanisapartofChina.Ⅳ.As作介词1.作“如,像”解。e.g①Theygotunitedasoneman.②Shespokeofmeasherclosedfriend.2.作“充当,作为”解。e.g③Asawriter,hewasfamous.④EnglishisspokenasthefirstlanguagebemostpeopleinAustralia.3.As作为介词,常和以下动词连用。regard…as/beknownas/consider…asuse…as/describe…as/berememberedasworkas/actas/behonoredas/Weregardthesunasthesourceofmostformsofenergy.e.gⅤ.含as的固定词组1.assoonas→引导时间状语从句。So/asfarasIknow→在句中作插入语。意思是“据我所知”。e.gAs/SofarasIknow,hewillcomeherenextMonday.Aswellas→并列连接词组,意思是:“和,同”。当其连接两个并列主语时,谓语动词应与前面的主语在数上保持一致。也可以和短语notonly…butalso进行替换。e.g2.Myparentsaswellasmyeldersisterenjoymusic.试比较下面句子。①Myeldersisteraswellasmyparentsenjoysmusic.②TomstudiesJapaneseaswellasChinese.TomstudiesnotonlyChinesebutalsoJapanese.★★→aswell→译为“也,还”经常放在句尾。与too,also同义词。e.g3.Comehereearly,andbringyourbrotheraswell.Soastodosth./so…astodosth.→引导目地或结果状语。e.g4.Hestudieshardsoastopasstheexam.Hewassostrongastocarrytheheavybox.5.suchas→意为“例如,诸如”可用来引入同位语,举一例或数例说明它与之同位词的词所含的具体内容。e.gTherearedifferentformsofenergy,suchasheatenergy,lightenergy,soundenergyandetc.6.asto(=asfor/asregards)关于,至于asmuchas/asmanyas“多达…,达到…至多”e.gThereisnodoubtastohishonesty.Hecanearnasmuchas500dollarsaday.7.asaresult/asaresultof(由于……的结果)asawhole(就整体来说)/asfollows(如下)asusual(照常)/asa(general)rule(通常)asamatteroffact(事实上)/asabove(如上)assoonaspossible/asearlyaspossibleasquicklyaspossibleMoreexamples:①Shediedasaresultoftheaccident.②Thereasonsareasabove(asfollows).③Themachinerunsasusual.④Asamatteroffact,airisagas.⑤Hisfathergetsupearlyasarule.⑥YoushouldimproveyourEnglishassoonaspossible.⑦Whensoundtravelsthroughair,theair,asawholedoesn’tmove.⑧Todayourlifehasbeenmuchbetterascomparedwiththatbeforeliberation.和解放前比起来我们今天的生活好得多了。10/8/2019
本文标题:as的用法总结
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