1、Lesson 17Always young My aunt Jennifer is an actress.She must be at least thirty-five years old.In spite of this,she often appears on the stage as a young girl.Jennifer will have to take part in a new play soon.This time,she will be a girl of seventeen.In the play,she must appear in a bright red dre
2、ss and long black stockings.Last year in another play,she had to wear short socks and a bright,orange-coloured dress.If anyone ever asks her how old she is,she always answers,“Darling,it must be terrible to be grown up!”Q and A:1.Is your aunt Jennifer an actress or a nurse?She is an actress.2.Is she
3、 over thirty or is she under thirty years old?She is over thirty.3.Does she often appear on the stage as a young girl or not?She often appears on the stage as a young girl.4.Will Jennifer act the part of a girl of seventeen in a new play soon or not?She will be a girl of seventen in a new play.5.Doe
4、s she ever tell anyone how old she really is or not?She never tells anyone how old she is.【New words and expressions】1.appear v.登场登场,扮演扮演 vi.出现（反义词是出现（反义词是disappear）agree-disagree like-dislike happy-unhappy I cant appear in this dress at the party.appearance n.出现；外貌出现；外貌Dont judge a man by his appea
5、rance.不要以貌取人。不要以貌取人。2.bright adj.鲜艳的bright color(colour)鲜艳的颜色bright red 鲜红色；bright yellow 明黄色；bright blue 宝蓝色adj.光明的bright future/prospect 光明的未来adj.聪明的bright ideas 聪明的主意The little boy is really bright.3.stocking n.长筒袜（不仅仅是女用）stockings4.sock n.短袜 a pair of socks 一双袜子【课文语法讲解课文语法讲解】must 情态动词情态动词表示推测表示推
6、测表示不可避免的义务（必须表示不可避免的义务（必须.）接下来接下来.开始看课文句子开始看课文句子.【课文语法讲解课文语法讲解】1、My aunt Jennifer is an actress.同位语同位语 （回想第（回想第4课句子课句子 I have just received a letter from my brother，Tim.）解释说明）解释说明前面的名词。前面的名词。以以-ess结尾的是女性；以结尾的是女性；以-or、-er结尾的是男性结尾的是男性actor 男演员男演员 ；actress 女演员女演员 :waiter 男服务员男服务员 ；waitress 女服务员女服务员prin
7、ce 王子王子 ；princess 公主公主lion 公狮子公狮子 ；lioness 母狮子母狮子god 神神 ；goddess 女神女神 (God 上上帝帝,注意注意“G”大写大写)2、She must be at least thirty-five years old.回顾情态动词用法：回顾情态动词用法：是动词，可以做谓语，不表动作，而表情绪态是动词，可以做谓语，不表动作，而表情绪态度度不能单独使用，必须不能单独使用，必须+动词原形动词原形 ，构成谓语。，构成谓语。无人称变化无人称变化 ，无单三，无单三 形式形式动词变化有限，现在时和过去时动词变化有限，现在时和过去时(委婉表达委婉表达)常
8、见情态动词：常见情态动词：may-might,can-could,will-would,shall-shouldI couldnt play the guitar years ago,but I can now.（过去）Could you please help me do the housework?(委婉)接着，看课文中接着，看课文中must的用法：的用法：She must be at least thirty-five years old.1.must 情态动词情态动词must：一定，表示对：一定，表示对现在推测现在推测，不是，不是100%事实，但可能事实，但可能性最高。性最高。她一定至
9、少她一定至少35岁了。岁了。区别区别:she is thirty-five years old.(她就是她就是35岁岁)She must be a model.He looks pale,he must be ill.must 还可以表示对还可以表示对过去的推测过去的推测 must have done（回顾（回顾20课用法）课用法）It must have rained last night.She must have cried just now.must 情态动词情态动词 表示不可避免的义务表示不可避免的义务 =have to I must do it now.=I have to do
10、it now.She must do it now.=She has to do it now.You must do it tomorrow.=You will have to do it romorrow.They had to do it yesterday.2.at least 至少至少,最少最少 反义词：反义词：at most 最多最多 3.年龄的两种表示方法：龄的两种表示方法：数字数字+years old，作表语，作表语 She is thirty-five years old 她三十五岁她三十五岁 数字数字+-year-old，作定语，作定语 my four-year-old d
11、aughter3、In spite of this,she often appears on the stage as a young girl.in spite of 不管，尽管不管，尽管 (“of”为介词为介词,后面后面一定会加名词、代词或从句一定会加名词、代词或从句)区别区别 ：even though/although (尽管，连词尽管，连词)Although I am tired,I am happy.in spite of this 尽管如此尽管如此appear.as.扮演扮演.角色角色拓展难点：拓展难点：as的用法的用法 作为介词，可以表示作为介词，可以表示“作为作为”、“以以身份
12、，身份，担任担任工作工作”等等In this film,he appeared as a policeman.He works as an engineer.他担任工程师的工作。他担任工程师的工作。作为连词，可以表示作为连词，可以表示“因为因为”、“正当正当时候时候”、“以以方式方式”或或“如同如同那样那样”等等You must take care of the bady tomorrow as I am going to London.（因为，由于）（因为，由于）As we were talking about him,he knocked at the door.（当（当时候）时候）Do
13、as you are told.叫你怎么做就怎么做叫你怎么做就怎么做(按你被告知的那样去做按你被告知的那样去做)（以（以方式）方式）As I learned,（如同（如同那样）那样）What does as mean in these sentences?P78在下列各句子中as 什么意思?1.He works as a pilot.2.You mustnt shout so loudly as youll wake up the baby.3.As we were listening to the radio,someone knocked at the door.4.As I was le
14、aving the house,the postman brought a letter.4、Jennifer will have to take part in a new play soon.区别：区别：join/take part in/attendjoin 一般是加入组织，团体，党派一般是加入组织，团体，党派join sb./sth.join the army 参军参军 join the party 入党入党join us (口语口语)加入我们加入我们(这个团体这个团体)中来中来take part in:参与某一项活动，参与某一项活动，+活动词，活动词，比较积极地参加比较积极地参加I
15、will take part in her birthday party tomorrow.take part in the race 参加比赛参加比赛attend 出席（正式）出席（正式）attend the meeting 参加会议参加会议,出席会议出席会议attend the party 出席宴会出席宴会attend the class 上课上课Thank you for your attending.谢谢大家的出席谢谢大家的出席(到来到来)5、In the play,she must appear in a bright red dress and long black stockin
16、gs.in(+颜色、衣服颜色、衣服)穿着穿着样的衣服，用介样的衣服，用介词短语取代动词，避免了一句话中出现两个词短语取代动词，避免了一句话中出现两个动词动词The boy in green.in a bright red dress 鲜红色的连衣裙鲜红色的连衣裙bright,orange-coloured dress 鲜艳的桔黄色鲜艳的桔黄色衣服衣服 区别：区别：dress,suit,costumedress n.裙子，晚礼服，连衣裙裙子，晚礼服，连衣裙(女式女式)suit n.套装（男式）套装（男式）My brother never wears ready-made suits.我的弟弟从来
17、不穿成衣。我的弟弟从来不穿成衣。costume n.演出服演出服,民族服装民族服装,某一年代所穿某一年代所穿的服装的服装 All the actors wore fifteenth-century costumes.所有演员都穿着所有演员都穿着15世纪的服装。世纪的服装。7、If anyone ever asks her how old she is,she always answers,Darling,it must be terrible to be grown up!ever=at any time 任何时候任何时候(时间副词时间副词)it must be 一定一定(表示推测表示推测)g
18、rown-up adj.成年人成年人be grown-up 作为一个成年人作为一个成年人grow up (人人)成长成长当有人问你年龄时，你可以这样回答：当有人问你年龄时，你可以这样回答：It is a secret./It is privacy.I forget it.区别：区别：grow and grow up grow vi.生长，成长，发育生长，成长，发育 Trees of the kind dont grow in our country.How tall youve got!Youve grown a lot.grow up 长成，成熟（其被动态表示长大成长成，成熟（其被动态表示长
19、大成人）人）Lucy has grown up a lot since I last saw her.选择正确的词：P791.Trees takes a long time to _(grow,grow up)2.My father bought a new _(suit,costume)recently.3.She hired(租用）a _(suit,costume)for the fancy-dress party.4.Do you like my sisters new _(dress,costume)?三维训练（一）对应课本 P 77 My aunt Jennifer is an ac
20、tress.She must be at least thirty-five years old.In spite of this,she often _(appear)on the stage _（作为）a young girl.Jennifer _(have to)take part in a new play soon.This time,she _(be)a girl of seventeen.In the play,she must appear _（穿着）a bright red dress and long black stockings.Last year in another
21、 play,she _(have to)wear short socks and a bright,orange-coloured dress._(如果）anyone ever asks her how old she is,she always answers,“Darling,it must be terrible to be grown up!”appearswill have towill be havd toasinIf三维训练（二）再次回顾今天所有知识点My aunt Jennifer is an actress（一个女演员）.She must be at least(至少）thi
22、rty-five years old.In spite of this（尽管如此）,she often appears on the stage（在舞台上)as a young girl.Jennifer will have to take part in(参加）a new play soon.This time,she will be a girl of seventeen(一个17岁的女孩）.In the play,she must appear in a bright red dress and long black stockings.Last year in another play
23、,she had to wear short socks and a bright,orange-coloured dress.If anyone ever asks her how old she is,she always answers,“Darling,it must be terrible to be grown up(长大）!”【中考探索：中考探索：情态动词情态动词】情态动词四注意情态动词四注意：情态动词有一定的意义情态动词有一定的意义无人称和数的变化无人称和数的变化通常不带通常不带to 表示说话人的语气或情绪表示说话人的语气或情绪初中阶段必须掌握的情态动词：can could m
24、ay might will would must have to shall should need had better 考点一：情态动词的基本含义 can(could)能，会 may(might)可以，可能 will(would)将，会，愿意 must 必须 have to 不得不 need 需要 had better 最好 should 应该 shall1.can 与couldcould 在疑问句中表示委婉的请求，不是过去式。E.G.:Could I have a cup of tea?2.must与have to must “必须”侧重于个人意志和主观上的必须做某事，具有强制性的意味。
25、have to “不得不”强调客观上的原因迫使不得不去做某事。E.G.：I know I must study hard.我知道我必须努力学习。My brother was very ill,so I had to call the doctor in the midnight.我弟弟病得厉害，我只得半夜里把医生请来。否定形式:must 的否定形式为mustnt,表示“一定不要，绝对禁止”E.G.:You mustnt play with fire.不许玩火。You mustnt be late.一定不要迟到。have to 的否定形式为dont have to,表示“不必”You dont
26、have to tell him about it.你不一定要把此事告诉他。3.will与shall在疑问句中，shall 用于第一人称，will 用于第二人称，用来征求对方意见。Shall we go out for a walk?Will you please take out the rubbish?4.had better 最好had better do sth.最好做某事had better not do sth.最好不要做某事5.need 的用法need 既可做实义动词用，又可做情态动词用。肯定句中为实义动词，否定句和疑问句中为情态动词。作实义动词时后面的不定式必须带to.1)实义
27、动词：sb.need to do sth 某人需要做某事 You need to do your homework by yourself.2)情态动词：You neednt worry about your Chinese,we can help you.Need we take all our books today?3)need 的被动含义 sth need doing=sth need to be done Our classroom needs cleaning at once.=Our classroom needs to be cleaned at once.考点二：情态动词开头
28、的疑问句的答语句型句型肯定回答肯定回答否定回答否定回答Can I?Yes,you can.No,you cant.May I?Yes,you may.No,you mustnt.No,you cant.Could I?Yes,you can.No,you cant.Must I?Yes,you must.No,you neednt.No,you dont have to.Need I?Yes,you must.No,you neednt.cant be /do may,might,could be/do must be/docant have done 对过去推测：不可能做过对过去推测：不可能
29、做过may have done对过去推测：可能做过对过去推测：可能做过must have done对过去推测：对过去推测：一定做过一定做过impossible 0%improbableunlikely 25%possibly 50%probablylikely 75%Sure.Certain 100%考点三：情态动词表示推测1.Mike，you _ play with fire.You _ burn yourself.A.wont cant B.mustnt,may C.dont have to,must D.have got to,shouldnt2.Its getting dark.Im
30、afraid I _ go now.A.can B.may C.have to D.shall(应该应该)3.Can I wear any clothes I like to school?-No,you cant.You_ wear a uniform.A.might B.must C.will D.would中考语法专项练习 4.You have to _ the teacher carefully.A.listen B.listening C.listen to D.listening to5.Mrs.Green_ go far if she goes shopping.The supe
31、rmarket is far from her neighborhood.A.has to B.neednt C.doesnt have to D.cant6.She _ clean the classroom today.A.isnt have to B.dont have to C.doesnt have to D.have to7.-May I go out now,Dad?-No,you_let your mother know first.A.can B.may C.need D.must8.Everyone_go through the security check(安检安检)wh
32、en entering the World Expo Park.A.can B.may C.must D.ought9.-Excuse me,whose Japanese book is this?-It_ be Toms.In our class,only he is studying Japanese.A.must B.cant C.would10.-You_ be happy with the strong public support youve received.-Yes,youre right.Im really excited.A.may B.can C.must D.need1
33、.She has to walk to school every day.（一般疑问）一般疑问）_ she_ to walk to school every day?2.His sister has to stop writing.(否定句否定句)His sister _ _ _ stop writing.3.We must clean the kitchen.(同义句同义句)We _ _ clean the kitchen.4.Must I finish the work now?（否定回答）（否定回答）No,you _ _ _.5.You must cross the road now.(
34、否定句否定句)You _ _ the road now.中考提高练()1.-I think Helen is at home.-No,she _ be,for she phoned me from the airport just five minutes ago.A.mustnt B.neednt C.cant D.ought not()2.-She looks very happy.She _ have passed the exam.-I guess so.Its not difficult after all.A.should B.could C.must D.might ()3.Mr
35、 Wang _ be in Nanjing now,he went to Beijing only this morning.A.mustnt B.may not C.cant D.neednt()4.-Must I stay at home,Mum?No,you _.A.neednt B.mustnt C.dont D.may not()5.To make our city more beautiful,rubbish _ into the river.A.neednt be thrown B.mustnt be thrown C.cant throw D.may not throwCCCA
36、B()6.-May I go out to play basketball,Dad?-No,you_.You must finish your homework first.A.mustnt B.may not C.couldnt D.neednt()7.-Where is Jack,please?-He _ be in the reading room.A.can B.need C.would D.must()8.John _ go there with us tonight,but he isnt very sure about it.A.must B.can C.will D.may()9.Could I borrow your dictionary?-Yes,of course you _.A.might B.will C.can D.should()10.His room is dark.He must _ to bed.A.go B.be going C.have gone D.have been gone()11.Joh _ his father about his failure in the exam.A.dares not tell B.dares not telling C.dare not tell D.dares not to tellADDCCC
