Unit3TheworldOnlineGrammarandusage课件-高一下学期英语译林版

必修三Unit3GrammarandusageHowtousenon-finiteverb“doing”inwriting?祁阳市第二中学尹燮【重点】1.非限定动词的定义、四类形式（V+ing动名词/现在分词、V+ed过去分词、To+V不定式）

及可作主语等多种成分的功能。2.使用非限定动词的原因：解决简单句单一谓语动词限制，避免过多使用连词。3.“doing”作状语的核心用法：描述同时/先后发生的动作（“havingdone”需主语一

致）、呈现结果、解释原因。4.能正确用“doing”改写句子（如春节相关例句）。【难点】1.“havingdone”的正确使用：判断动作先后，确保与谓语动词主语一致。2.区分“doing”作状语时的不同功能（描述动作、表结果、表原因）并恰当运用。3.将“doing”用法灵活融入写作，替代简单句和连词。教学重难点Whatis“non-finiteverb”?Inlinguistics，"anon-finiteverb"isaverbformthatisnotlimitedbyasubject.Itisnotfullyinflectedbycategoriesthataremarkedinflectionallyinlanguage,suchastense,aspect,mood,number,genderandperson.DefinitonV+ing═gerundV+ed═pastparticipleV+ing═presentparticipleto+V═to-infinitiveDefinitonSowhydopeopleuse“non-finiteverb”?PredicateverbAsimplesentencehasonlyonepredicateverb！IadmiredthemoonontheMid-AutumnFestival.predicateverb:admiredPredicateverbIadmiredthemoonandatemooncakesontheMid-AutumnFestival.conjunctionsWhatifIwanttosayIatemooncakeswhileadmiringthemoon?PredicateverbconjunctionsHowtouse“non-finiteverb”inwriting？“Doing”:todescribeactions.Shelefttheearthandascendedtothemoon.Shelefttheearth,ascendingtothemoon.(a)Sb.didsth...,doing(withaccompanyingactions)Doing(withaccompanyingactions)...,sb.didsth策略支招“Doing”:todescribeactionsHavingsavedtheworld,theQueenMothergavehimanelixirasareward.Isthesentenceright?Havingsavedtheworld,Houyiwasgivenanelixirasareward.Isitclear?

(b)Havingdone(withcompletedactions)...,sb.did策略支招“Doing”:topresentresultsHouyishotdownninesunsandsavedtheworld.Houyishotdownninesuns,savingtheworld.策略支招“Doing”:toexplainreasonsChang'edranktheelixirbyaccidentandbecameimmortal.Drinkingtheelixirbyaccident,Chang'ebecameimmortal.策略支招策略支招：表格梳理，举一反三1.firstofall,havingcleanedtheroomanddonetheSpringFestivalshopping,wecutandputuppapercutouts.策略支招：句子提质升级12.AfterthatweputupSpringFestivalcoupletsandNewYearpictures,makingthehousefestive.策略支招：句子提质升级23.Afterthesunwentdown,wegatheredtogethertohaveareuniondinner,chattingwithourfamiliesandwatchingCCTVNewYearGala.策略支招：句子提质升级34.BeingveryhappyintheSpringFestival,I'mlookingforwardtoitnextyear.策略支招：句子提质升级4【AI评估】第一篇得分：81第二篇得分：96第一篇作文是一篇合格的、内容完整的作文，但它更像是一份“活动清单”，语言较为平淡且有一些语法错误。第二篇作文则是在第一篇的基础上进行了成功的润色和升级。通过运用分词结构这一高级语法技巧，极大地提升了句子的复杂度和高级感，使文章更符合英语的表达习惯。第二篇句式结构丰富多变，巧妙地运用了分词短语，将多个动作有机结合，使文章读起来更流畅、更紧凑。这是两篇作文最核心的差异。比如，第二篇使用了“Havingcleaned...anddone...”这个现在分词的完成式，清晰地表达了“打扫卫生和购物”这两个动作在“贴窗花”之前已经完成，时间的层次感立刻显现出来。策略支招:作文分析对比，用AI评估支招，可视化内容结构对应技能:对比新旧表达，找变化逻辑方法总结HomeworkTrytocollect