最新As用法总结教学讲义PPT.ppt

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1、As用法总结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,asIhaveratheral

2、otofworktodo.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

3、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/conside

4、r…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

5、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,a

6、ndbringyourbrotheraswell.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

7、.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/ase

8、arlyaspossibleasquicklyaspossibleMoreexamples:①Shediedasaresultoftheaccident.②Thereasonsareasabove(asfollows).③Themachinerunsasusual.④Asamatterof