九年级英语全册 Unit 13 We're trying to the earth Section A3课件.ppt

Unit 13Were trying to save the earth!,Section APeriod Three,take part inaffordturn offreusablepay fortake actiontransportation,参加v.买的起；承担的起（后果）关掉adj.可重复使用的付费；付出代价采取行动n.运输业；交通运输,用括号内所给动词的适当形式填空。Listen!The phone _(ring).Please go to answer it.Alan,its late.Why not go to bed?Jenny hasnt come back yet.I _(wait)for her.3.Whats your father doing now?He _(write)a letter in the study.,is ringing,am waiting,is writing,肯定句:主语+am/is/are+-ing 否定句:主语+am/is/are+not+-ing 疑问句:Am/Is/Are+主语+-ing,现在进行时,现在进行时表示现在或现阶段正在进行或发生的动作。,现在进行时-基本结构,表示说话时正在进行的，目前正在发生的动作。常带有表示目前时刻的时间副词,如：now,at the(very)moment,for the time being,at present,及Look!Listen!.,Look!The big bird is flying away.看，那只大鸟正在飞走。He is watching a movie now.他现在正在看电影。,现在进行时-用法,2)表示目前一段时间内正在进行，但 说话时可能没有进行的动作。,Right now I am studying Chinese by distance learning.我现在正通过远程教育学习汉语。,现在进行时-用法,3)与always,constantly,forever,all the time等副词连用，表示动作反复或习 惯。此时句子常含有说话者的强烈 情感在内。表达较强的“责备”或“表 扬”之意。,You are always changing your mind.你总是主意不定。(太烦人了。)He is always helping others.他总是帮助别人。(他真是个好人。),现在进行时-用法,4)对于come,go,leave,arrive,start等 表示位置移动的动词常可用进行时 态表将来。,He is leaving on Wednesday.他将于周三离开。Mary isnt here at the moment.She is coming later.玛丽现在不在这儿，她一会儿来。,现在进行时-用法,I called you at 4:00 yesterday afternoon,but no one answered.Sorry,I _ with my friends at that time.(2011河南)A.swim B.swam C.will swim D.was swimming,考点例析,【考点点拨】过去进行时表示过去某一时刻或某阶 段正在进行的动作，其谓语由“was/were+现在分词”构成。常与过去进行时连用的时间状语有：then,at that time,this time yesterday,at ten yesterday等。,用括号内所给动词的适当形式填空。1.Id like to introduce my best friend to you,Peter.Thank you,Lucy.But we _(meet)already.2.Look at these stamps.I _(keep)them for five years.Wow,they are wonderful.,have met,have kept,肯定句：主语+have/has+过去分词+其他否定句：主语+havent/hasnt+过去分 词+其他一般 Have/Has+主语+过去分词+疑问句：？肯定答语：Yes,主格代词+have/has.否定答语：No,主格代词+havent/hasnt.,现在完成时-构成,1.表示动作到现在为止已经完成或刚刚完成。2.动作发生在过去，强调对现在的结果、影响等。3.表示动作发生在过去，并且一直持续到现在，甚至还可能继续下去，句中使用持续性动词，且常有表示一段时间的时间状语。4.现在完成时可以用在条件或时间状语从句中，表示将来某个时刻之前已经完成的动作。,现在完成时-用法,1)现在完成时+since+点时间状语(名词、短语、从句，其中从句用一般过去时)2)现在完成时+for+段时间状语 3)It/This is the first/其他序数词/last time+that 从句中，从句使用现在完成时。,1)Mary has been ill since three days ago.2)Mary has been ill for three days.3)It is the first time that I have visited the city.This is the best film that Ive(ever)seen.,现在完成时-句型,六种时态一览表,用括号内所给动词的适当形式填空。,1.The Secondary School Entrance Exams _(hold)in June.2.A strange noise _(hear)by his mother last night.3.A wide road _(build)between the two villages by those people next year.,is held,was heard,will be built,被动语态表示主语是谓语动作的承受者，被动语态由“be+过去分词”构成。be随着主语人称和数以及时态的不同而变化。含有情态动词的被动语态由“can/must/may/should+be+过去分词”构成。,被动语态,The first section of New College English is designed for speaking practiceand is based on pictures and topics.,These computers were made in our own country last year.,Shall we be asked to attend the opening ceremony?,一般现在时的被动语态：am/is/are+过去分词,一般过去时的被动语态：was/were+过去分词,一般将来时的被动语态：will/shall+be+过去分词,1.有些动词可以有两个宾语，在用于被动结构时，可以把主动结构中的一个宾语变为主语，另一宾语仍然保留在谓语后面。通常变为主语的是间接宾语(指人的宾语）。,一些特殊的被动语态,They didnt offer Ann the job.,Ann wasnt offered the job.,2.在使役动词have,make,get以及感官动词see,watch,notice,hear,feel,observe等后面不定式作宾语补语时，在主动结构中不定式to要省略，但变为被动结构时，要加 to。,They make her clean the floor.,She is made to clean the floor by them.,3.It+be+过去分词+that从句(=主语+be+过去分词+to do sth.),表示：据说/据报道/据悉/据信等,据说这个男孩已经通过了这次全国性的测试。,It is said that the boy has passed thenational exam.The boy is said to have passed thenational exam.,1.某些感官动词加形容词及少数其他的动词本身可以表示被动意义。smell,taste,prove,sell,etc.1)The dish tastes delicious.2)The theory proved right at last.3)The book is so interesting that it sells well.,不可以变成被动语态的情况,need+V-ing 表示“主语承受动词发出的动作”，表示被动意义。我的车需要修理。My car needs repairing.(=to be repaired).,战争爆发了。The war broke out.但不能说：The war was broke out.,3.通常只有及物动词（组）才有被动语态，不及物动词没有。,“be+过去分词”这个结构并不都是被动语态，也可能是系表结构。被动语态与系表结构主要区别是：被动结构表示一个动作，而系表结构表示主语的特点或所处的状态，试比较下面的句子：,被动结构与系表结构的区别,The enemy was soon surrounded by us.The house is surrounded by trees.She was bitten by the dog in the darkness.I was excited by the news that my husbandgot promoted.,被动结构,系表结构,被动结构,系表结构,一般现在时、一般过去时和一般将来时的主动结构和被动结构(以动词do为例)：,We can do it by ourselves.It must be Toms.Look at his name on the cover.3.Im sorry.Children mustnt swim here.4.May see you ID card,sir?5.Will you pass me the book?,指出下列划线动词的种类。,情态动词,情态动词,情态动词,情态动词,情态动词,情态动词具有一定的意义，但不能单独作谓语，其后需接动词原形一起构成句子的谓语。情态动词(除have to以外)没有人称和数的变化。另外，情态动词可用来构成否定句、疑问句并进行简略回答。初中常见的情态动词有：can,may,must,need,have to,could,should,ought to 等。,考点一：考查表示“能力”的情态动词,1._ your Australian friend eat with chopsticks?Yes,but she cant use them well.A.Should B.Need C.Can D.Must2.The work is too hard for us.We _ finish it on time.A.cant B.mustnt C.shouldnt D.neednt,情态动词考点,3.Could your father play golf when he was young?No,he _.But he _ play table tennis.A.couldnt;could B.neednt;might C.mustnt;should D.shouldnt;need,【考点点拨】情态动词can表示“能力”时，与be able to同义，其否定形式为cant。can表示现在的能力，其过去式could表示过去的能力。,考点二：考查表示“应该”的情态动词,1._ weto finish our homework before noon?Yes,you _.A.Need;can B.Have;do C.Ought;ought to D.Should;must2.You _ study hard if you want to be a scientist in the future.A.may B.should C.would D.could,【考点点拨】情态动词should和ought to都可表示“应该”，但should侧重说话者主观的看法，而ought to更侧重客观情况。should的否定形式为shouldnt，ought to的否定形式为oughtnt to或ought not to。,考点三：考查表示“请求；许可”的情态动词及其回答,1._ I borrow your maths book?Sure.Here you are.A.Need B.Will C.May D.Must,2._ I take some photos in the hall?No,you _.Look at the sign“No photos”!A.Can;neednt B.Must;mustnt C.Should;neednt D.May;mustnt 3.Could I use your dictionary for a while?Yes,of course you _.A.could B.can C.will D.should,【考点点拨】情态动词may和can都可表示“请求；许可”。may比can正式，could在表示“请求；许可”时，既可表示过去，也可表示语气的委婉。当“May/Can/Could I”表示“请求；许可”时，肯定回答常用“Yes,please.”/“Certainly.”等，否定回答常用“No,you cant/mustnt.”等。,考点四：考查表示“推测”的情态动词,1.I saw Lily in the supermarket this morning.Oh,it _ her.She moved to Australia the day before yesterday.A.can be B.must be C.cant be D.mustnt be,2.After a long walk,the children _ be very tired now.A.will B.must C.have to D.can3.John _ go with us tomorrow,but he isnt sure.A.must B.can C.need D.may,【考点点拨】may,can,must都可表“推测”，三者的可能性依次递增。may和must表“推测”常用于肯定句中，can表“推测”常用于否定句和疑问句中。,考点五：考查need,must和have to的用法,1.Jim,you _ play with the knife.You _ hurt yourself.A.wont;cant B.mustnt;may C.shouldnt;must D.cant;shouldnt 2._ I have to hand in my homework now,Mr Zhang?Yes,you do.A.Do B.Can C.May D.Must,3.Must I get up before six oclock tomorrow morning,Dad?No,you _.Tomorrow is Saturday.You may get up a little later.A.mustnt B.cant C.neednt D.may not4.Its too late.We _ go home,or well be blamed(责备).A.can B.may C.might D.have to,【考点点拨】need作情态动词，意为“需要”，后接动词原形，常用于否定句、疑问句和条件句中。must意为“必须”，强调主观看法。对must引导的一般疑问句，肯定回答常用“must”，否定回答常用neednt或dont have to。mustnt意为“一定不要；禁止”。have to意为“不得不；必须”，强调客观情况下需要做某事，有人称、数和时态的变化，变否定句和疑问句时需要借助助动词完成句型的变化。,Jenny used to play the piano.,用used to句型说出与图片情景相符的句子。,Jenny,Mike used to wear glasses.,Mike,glasses,Peter used to play soccer.,Peter,soccer,Amy,long hair,Amy used to have long hair.,Mark used to like swimming.,Mark,like swim,Review,used to“_”,表示_used to+_对比现在和过去:_,过去的习惯,过去常常,动词原形,but not any more,but not any longer,but now，,翻译下列句子。,艾米以前是短头发吗？你以前常在学校吃午餐吗？他过去不戴眼镜。这些商店过去在周日是不营业的。他以前很高，是吗？,Did Amy use to have short hair?,Did you use to have lunch at school?,He didnt use to wear glasses.,The shop usednt to open on Sundays.,He used to be very tall,didnt he?,used to 的否定句和疑问句,否定句：didnt use to/used not to 一般疑问句:Did you use to.?/Used you to?变反意疑问句，附加疑问部分可用didnt/usednt 或did/used,She used not to like tests.Used you to be popular in school?They usednt to go skating,did they?,定义*used to“过去常常”,表过去的习惯*used to+动词原形*对比现在和过去:but now，but notany more,but not any longer 句式*否定句：didnt use to/used not to*一般疑问句:Did you use to.?/Used you to?*变反意疑问句，附加疑问部分可用 didnt/usednt 或did/used,used to,Summary,Finish the exercises 4a-4c on page 100.,Find the answer to the question.,Individual activity,注:另附 word 文档。点击此处链接,1.Dont make so much noise.The children _ an English lesson.(2011黑龙江绥化)A.have B.are having C.were having2.Listen!The phone _.Please go to answer it.(2011沈阳)A.rings B.is ringing C.rang D.will ring,3.-Why wont you go to the movie with me,Gina?-Because I _ it twice.(2011襄阳)A.see B.have seen C.saw D.will see4.China develops so fast.Thats true.It _ a lot already.(2011安徽芜湖)A.changesB.changed C.will changeD.has changed,5.Nick _ a job in a bank,but to our surprise,he didnt take it.(2012贵州遵义)A.offered B.has offered C.was offered6.Have you heard of Earth Day?Yes.The first Earth Day _ in 1970 to educate us to protect our planet.(2012河南)A.celebrates B.celebrated C.is celebrated D.was celebrated,7.Excuse me,whose book is this?It _ be Johns.It has his name on it.(2013四川南充)A.must B.need C.cant8._ I swim here?No,you _.Look at the sign“No swimming”.(2013四川广安)A.Must;cant B.Can;dont C.Can;mustnt,1.Review present progressive,passive voice,present perfect,used to and modal verbs.2.Read the articles in Learning English.3.Preview the new words and expressions.4.Preview 1a-2a on page 101.,Homework,