02 past tenses (1)

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1、PresentTensesCambridgeGrammarforIELTS1A.Contextlistening•burglar•burglary•musthaveseen•ontherise•frustrating–frustrated•handbag;purse;•avaluablecollectionofCDs–invaluable2B.Grammar1.Pastsimple2.Pastcontinuous3.Usedtoandwould31.Pastsimple•Structure–陈述句：verb+-ed(or-d)–否定句：didnot+

2、verb–疑问句：did…+verb?•e.g.–Heworkedforthepolice.–Shedidn’tworkforthepolice–Didtheyworkforthepolice?41.Pastsimple:Functions•totalkaboutsinglepastcompletedactions.Oftenthetimeismentioned:•Afewweeksagoawomancalledtoreportarobberyatherhouse.–Orthetimeisalreadyknown:•Howdidtheburglarb

3、reakinwithoutanybodyhearinghim?(inthestoryIjusttoldyouabout)51.Pastsimple:Functions•togiveaseriesofactionsintheorderthattheyhappened•Theburglarcameinthroughthefrontdoor,pickedupthewoman’shandbag,emptieditoutandstoleherpurse.61.Pastsimple:Functions•Wordslikenextorthenareoftenuse

4、dtoindicatethesequenceofevents:•Then,theburglarwentintothefrontroom,openedallthecupboardandtookavaluablecollectionofCDs.•totalkaboutpastrepeatedactions:•Whenhersongotolderheoftenwentouttovisithisfriendsafterschool.–参见下面usedto和would的讲解71.Pastsimple:Functions•totalkaboutlong-term

5、situationsinthepastwhicharenolongertrue•BillMurphyworkedforthepoliceforceforover17years.81.Pastsimple:Functions•用于转述别人的观点，并且不赞成这个观点的•Explorersatthattimebelievedthattheworldwasflat.•用于说明已经故去的人的情况•HisfatherworkedasanengineerinShell.–usedto也可以用于表示上两种用法91.Pastsimple.补充材料•一般过去时表示过去某

6、一段时间一直持续或反复发生的动作。•WhenhewasinBeijing,hecametoseemeeveryweek.他当初在北京时，每周都来看我。•Weoftenpracticedswimminglastyear.去年我们经常练习游泳。101.Pastsimple.补充材料•一般过去式用来表示”现在”a)一般过去式可以用来表示现在的情况，体现委婉客气的语气。•Didyouwantanythingtodrink?你想喝点什么吗？•CouldIhavealook?我能看一下吗？b)一般过去时用于虚拟语气中，表示现在或将来的动作或状态。•Itishig

7、htimewewent.是我们该走的时候了。•IwishIwereabird.我要是只鸟多好。112.Pastcontinuous•Structure–陈述句：was/were+verb+-ing–否定句：was/werenot+verb+-ing–疑问句：was/were…+verb+-ing?例句：•Shewaswatchingthenews.•Theyweren'twatchingthenews.•Wereyouwatchingthenews?122.Pastcontinuous:functions•toprovidethebackground

8、scenetoanactionorevent(usuallyinthepastsimple).Weoften