人教版（2025）必修第三册Unit 2 Morals and Virtues Discovering Useful Structures 课件（共22张PPT）（含音频+视频）.pptxVIP

Unit2MoralsandVirtuesPeriod3Discoveringusefulstructures

Thebestportionofagoodmanslifeishislittle,nameless,unrememberedactsofkindnessandlove.-WilliamWordsworth

非谓语动词不定式todo过去分词done独立主格现在分词doing动名词doing

1.作定语2.作表语4.作状语3.作宾补现在分词

Focuson基本用法the–ingformusedasadverbial

1.Walkinginthestreet,Isawatailorsshop.2.Beingpoor,hecouldntaffordaTVset.3.Hisfatherdied,leavingthefamilyevenworseoff.4.Usingyourhead,youwillfindagoodway.5.Studyinghard,hedidntpasstheexam.6.Heearnsalivingdrivingatruck.7.Hesatinthechairreadinganewspaper.时间原因结果条件让步方式伴随1.WhenIwalkedinthestreet,Isawatailor’sshop.2.Becausehewaspoor,hecouldn’taffordaTVset.3.Hisfatherdiedandleftthefamilyevenworseoff.5.Thoughhestudiedhard,hedidn’tpasstheexam.4.Ifyouuseyourhead,youwillfindagoodway.7.Hesatinthechairandreadanewspaper.6.Heearnsalivingbydrivingatruck.

动词-ing形式是非谓语动词的一种，兼有动词和形容词的特征，在句中可作表语，定语，宾语补足语和状语，一般表示进行或主动的意思。动词-ing形式用作状语时，其逻辑主语必须与句子的主语一致，动词-ing形式所表示的动作和句子的主语是主动关系。动词-ing形式在句中可以作时间、原因、条件、让步、方式、伴随和结果状语。动词-ing形式作状语

现在分词作时间状语时，相当于时间状语从句。可在现在分词前加连词“when,while,until”等，使其时间意义更明确。Walkinginthepark,shesawanoldfriend.＝When/while(shewas)walkinginthepark,shesawanoldfriend.当她在公园里散步时，她看到了她的一个老朋友。v-ing形式作时间状语

现在分词作原因状语时，可转换为由since,because或as引导的原因状语从句，这类状语多放在句子的前半部分。Beingill，hecouldntgotoschool.＝Ashewasill，hecouldntgotoschool.v-ing形式作原因状语

现在分词作条件状语时，可转换为if,once或unless等引导的条件状语从句。Workinghard，youllmakegreatprogress.＝Ifyouworkhard，youllmakegreatprogress.v-ing形式作条件状语

现在分词作让步状语时，相当于一个以though/although引导的让步状语从句。Workingorreading，shealwaysdidherbest.＝Whethersheworkedorread，shealwaysdidherbest.v-ing形式作让步状语

(1)Workinghard,youwillsucceed.=Ifyou________,youwillsucceed.=__________andyouwillsucceed.ExercisesWorkha