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1Book4Unit4GrammarThePresentParticiplesasAdverbials现在分词作状语教材分析：本课是人教版必修四第四单元语法课，现在分词充当句子成分是本课的语法重点，本单元阅读材料中出现了大量现在分词作状语的用法，高考也常有涉及。因此，本课围绕课时重点进行了四个方面的分析，一是现在分词的形式，二是现在分词所充当的状语类型，三是现在分词作状语和状语从句的转换，四是现在分词与主句主语的一致性。为了实现教学目标，我在教学过程中主要采取了观察归纳法、示范法、小组合作引导学生认识问题、分析问题、解决问题。为了巩固教学成果，我参考当前的常考题型如单句改错、短文填空设置了与教学内容紧密相关的作业题，希望能够达到巩固提升的效果。学情分析：本班学生为高一年级实验班学生，学习基础总体较好，但因为还处于高中初级阶段，所以教学内容应当居中，教学过程中教师要及时点拨引导，做好学生的学习助手。教学目标：通过本节课的学习，学生能够知识目标：1.明确现在分词的各种形式；2.识别现在分词作状语的类别；3.能把状语从句转换成相应的现在分词状语；4.现在分词作状语的主语一致问题；能力目标：学生能够正确使用现在分词作状语；情感目标：1.树立英语学习的信心2.增强小组的竞争与合作意识。教学重点：1.帮助学生实现状语从句和现在分词作状语的互换2.现在分词和不定式作状语时，其逻辑主语一般应与句子的主语保持一致。（对策）：探究观察、小组讨论教学难点：1.连词+分词形式（分词作状语的省略问题）2.现在分词的独立主格结构（对策）：归纳法教学用具：多媒体、黑板教学过程：Lead-in→Presentation(Step2)→Consolidation(Step3)→Homework(Step4)教学过程：Step1:Lead-in（3mins）Appreciateashortpoemandfindoutthepresentparticiplesusedasadverbials.Step2:Presentation(32mins)Part1:Changesintenseandvoiceofpresentparticiples(5mins)（现在分词在时态和语态变化）语态时态主动语态被动语态一般式几乎同时完成式有明显时间差主动关系被动关系(1).____inthestreet,shesawanoldfriend.A.WalkingB.walkC.havingwalkedD.beingwalked(2).____byhisfather,myfriendwasunhappy.A.HavingpunishedB.punished2C.BeingpunishedD.Punishing(3).___suchheavypollutionalready,itmaybedifficulttocleanuptheriver.A.HavingsufferedB.SufferingC.TosufferD.Suffered(4)._______forthreeminutes,thegirlfeltnervous.A.stareatB.BeingstaredatC.HavingbeenstaredatD.TostareatPart2识别现在分词所充当的各种状语(8mins)1.Review:判断V-ing在句中所做的成份①.Cominglateforschoolisabadhabit.②.Weshouldavoidtalkingloudlyinalibrary.③.Theyareexciting.④.Theyarevisitorscomingfromseveralcountries.⑤.Cominglate,thegirlmissedthetrain.2.Observeandthink:现在分词可以做哪些状语？Competition:Recognizetheadverbialsaccordingtotheinformationandtellwhatkindofadverbialitis.)Example:Havingbeentranslatedinto20languages,thebookisfamousallovertheworldnow.(原因状语)①.Beingill,hecouldn’tcometoschooltoday.()②.Usingyourhead,youwillfindaway.()③.Havingarrivedatthefactory,theyimmediatelysettowork.()④Havingacold,theboywenttoschoolasusual.()⑤.Shewassoangrythatshethrewthetoyontheground,breakingitintopieces.()⑥.Thegirlcameinsmiling.()小结：现在分词可以充当原因条件、时间、让步、结果、伴随或方式状语。其中，_______、_______、______、_______常位于句首，_____、______常位于句尾，有时伴随状语或方式状语可谓语句中或句首。Part3现在分词作状语，与状语从句的转换（13mins）1.一句多译：观察并试着总结状语从句怎样转换成分词作状语。（从句分词）Whenwearecrossingtheroad,weoftensay:“Becareful!”Whenwearecrossingtheroad,weoftensay:“Becareful!”Whenwearecrossingtheroad,weoftensay:“Becareful!”小结：当从句主语和主句主语一致，且从句谓语和主句主语是主动关系时，可以省略状语从句的_____、_____,当谓语中含有be或助动词do时，也应一起省略），再把谓语中的实义动词变成_______，其他不变。2.请把下列状语从句转换成现在分词作状语。Eg:Afterheheardastrongsound,hewentoutoftheroomforalook.=Hearingastrangesound,hewentoutof….①.Asthegirlwasseriouslyill,shewastakentohospitalimmediately.______________________________________________________②.Beingseriouslyill,thegirlwastakento….________________________________________________________③.Asshedidn’tknowanyFrench,shecouldn’tgetanyonetohelpher.________________________________________________________3.看谁反应快：判断下列现在分词作哪种状语，并把其可以替换的逻辑连词填入括号中。3①.WorkingharderatEnglish,youwillmakegreaterprogress.(_______状语)___youworkharderatEnglish,youwillmakegreaterprogress.②.Feelingverytired,theykeptrunning.(______状语)________theyfeltverytired,theykeptrunning.③.Havingfinishedtheirhomework,theywenthome.(______状语)______theyhadfinishedtheirhomework,theywenthome.*Havingfinishedtheirhomework表现的动作在wenthome(),故用分词的（）式.④.Thechildrenranoutoftheroom,laughingmerrily.(______状语)提示：现在分词作伴随状语相当于一个由______连接的并列谓语或并列句。Part4:主语的一致性(6mins)1.从句的主语和主句的主语必须一致。判断下列句子的正（T）误(F):Hearingthenews,tearsrandownherface.()Hearingthenews,shecried.()Lookingoutthroughthewindow,thegardenisbeautiful.()Lookingoutthroughthewindow,Ifoundthegardenbeautiful.()提示：(1).从句的主语和主句的主语必须一致。即-ing分词作状语时，它的逻辑主语就是整个句子的主语，并表示主动的关系。否则，(2).分词必须有自己的主语。这种带主语的分词叫做分词的独立结构。在句中作状语，表示时间、条件、原因、结果、让步、伴随或方式。2.完成句子①._____________,we`lldoanothertwoexercises.如果时间允许，我们将做另两个练习。②.______________,wedecidedtogoswimming.天气好，我们决定去游泳。Step3:Consolidation(5mins)用动词的恰当形式填空。WhileinLondon,IjusthadtogototheBritishMuseum.There`ssomuch1._____(see)andIonlyhadtimetospendafewhoursthere.2.____(see)thepocketwatches,Iwasremindedodtheoldwatchmygrandfatherusedtowear.Idon`tthinkIeversawhimwithoutit.ThenIwenttotheMonkeyGallery.Theyhavegotan3._____(amaze)collectionofcoins,some4.____(be)over2,000yearsold.NextstopwastheChinesecollection.5._____(live)inHongKongforsomanyyears,Iwasveryinterestedinthis.AfterlookingattheChinesecollection,IhadhopedtoseetheMexicancollection.Unfortunately,when6.____(get)there,Ifoundthatitwasclosed.7.____(spend)thewholemorningwalkingaroundthemuseum,IdecidedthatIwantedtodosomethingverydifferentintheafternoon.SoIwenttotheLondonEye8._____(get)abird`sviewofthecity.When9.____(see)fromthetopoftheEye,someofthebiggestbuildingsappearverysmall.Afterthat,tiredfromallthewalking,Iwentbacktomyroomatthehotel10.____(stand)ontheriversideandsleptforacoupleofhoursbeforegoingouttohavedinner.Step4:HomeworkGoontofillintheblankswiththecorrectformsofVerbs4板书设计ThePresentParticiplesasAdverbials现在分词作状语1、现在分词的形式：V-ing(即doing)否定形式：notdoing2、状语从句结构：逻辑连词+主语+谓语+其他分词作状语结构：Doingsth.Notd