新概念第二册第17课

Must you leave now? 难道你非得现在就走 吗？ I’m afraid so. I have to study for an exam. must可以表示推测，must do表示对现在的推测； must have done表示对过去的推测 He must be mad. 在 I think…/he thinks…的从句中，一定要用事 实说话. (不能说成 “I think he must be a fool.” ) must be的否定式为can’t be（不可能）： Someone’s using the phone, it must be John. It can’t be John. He promised me he wouldn’t use it today.

Dress, Suit, Costume dress n. 裙子，晚礼服，连衣裙(女式) suit n. 套装（男式） My brother never wears ready-made suits. 我的弟弟从来不穿成衣。 costume n. 演出服,民族服装,某一年代所 穿的服装 All the actors wore fifteenth-century costumes. 所有演员都穿着15世纪的服 装。
2、She must be at least thirty-five years old. 年龄的两种表示方法： ① 数字+years old，作表语 thirty-five years old 三十五岁 ② 数字+-year-old，作定语 my four-year-old daughter must + 动词原形 不得不, 必须；(对现在 的)推测 She must be a model. She is fifteen years old. 她五岁
Grow and Grow up grow vi. 生长，成长，发育 Trees of the kind don’t grow in our country. How tall you’ve got! You’ve grown a lot. grow up 长成，成熟（其被动态表示长 大成人） Lucy has grown up a lot since I last saw her.
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 dress and long black stockings. Last year in another play, she had to wear short socks and a bright, orange-colored dress. If anyone ever asks her how old she is, she always answers, 'Darling, it must be terrible to be grown up!'
2. bright [braɪt] adj. 鲜艳的 bright red 鲜红色； bright yellow 明黄色； bright blue 宝蓝色
Listen and answer
How old is Jennifer? What does she think of being grown up?
自从我上次见到她之后，露西已成熟了许多。 What do you want to do when you’re grown up? Some people never grow up. 有些人总是成 熟不起来。 Exercises 3 She hired a(suit)(costume)for the fancydress party. costume fancy-dress-party 化妆舞会； hire v. 雇， 租
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(时间副词) it must be 一定……(表示推测) grown-up adj. 成年人 be grown-up 作为一个成年人 grow up (人)成长 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.
5、In the play, she must appear in a bright red dress and long black stockings. in (+颜色、衣服) 穿着……样的衣服，用 介词短语取代动词，避免了一句话中出现 两个动词 The boy in green. in a bright red dress 鲜红色的连衣裙 bright,orange-coloured dress 鲜艳的 桔黄色衣服
have to和have got to往往可以互换，但与 always，sometimes等频度副词连用时，用 have to往往比用havt got to好。have got to比 have to更口语化。 在过去时的句子中, 要用have to 来表示 “必 须”，have to可以有任意时态 She will have to… ；She had to… ； She has/I have had to… have to作为实义动词, 否定式为don't have to； will not have to；didn't have to 在表达“难道你不能不（做……）”时，一般用 “Must you…?”，而不用“Do you have to…?”
3、In spite of this, she often appears on the stage as a young girl. in spite of 不管，尽管 (“of” 为介词, 后 面一定会加名词、代词或从句) in spite of this 尽管如此 In spite of this, I still like school. （school前不加“the”表示上学，加“the” 只表示学校） In spite of what you have said about her, she is much better than Mary.
4、Jennifer will have to take part in a new play soon. join 参加了某一种团体 join sb./sth. join the army 参军 join the party 入党 join us (口语)加入我们(这个团体)中来
Lesson 17
Always young
1. appear [əˈpɪə(r)]
① 出现，显露（反义词是disappear） The plane appeared. ② 当众露面；登场（演出等） I can’t appear in this dress at the party. ③ 似乎，看起来好象 He appears young.
She must be at most fifteen years old. 她最多十五岁 She must be at least fifteen years old. 她至少十五岁 at least 至少, 最少 If you can’t clean the car, you can at least help me to clean it. at most 最多
Multiple cΒιβλιοθήκη Baiduoice questions
1- d 2- b 3- b 4- d 5- c 6- c 7- b 8- a 9- a 10- c 11- a 12- d
【Special difficulties】
As的用法 ① 作为介词，可以表示“作为”、“以……身份” 等 In this film, he appeared as a policeman. As a mechanic, he can’t always keep himself clean. ② 作为连词，可以表示“因为”、“正当……时 候”、“以……方式”或“如同……那样”等 You must take care of the bady tomorrow as I am going to London.（因为，由于）
【课文讲解】
1、My aunt Jennifer is an actress. 以-ess结尾的是女性；以-or、-er结尾的是男性 actor 男演员 ； actress 女演员 : waiter 男服务员 ； waitress 女服务员 prince 王子 ； princess 公主 lion 公狮子 ； lioness 母狮子 god 神 ； goddess 女神 (God 上 帝,注意 “G” 大写)
【Key structures】
情态助动词must Must译为“必须”，可以表示“必要，命令或强 制，邀请，决心，不可推卸的责任”等多处含义。 它没有时态和人称变化，通常只用于现在时和将 来时。在其他时态时，must的有些含义可以用 have to或have got to。这三种形式一般可以互 换，但用于第一人称时，have to(have got to) 强调客观的要求或外在的原因，must则强调主 观的要求或表示说话的人认为自己有权做某事。

take part in 参加某一种活动 take part in the race 参加比赛 take part in a play attend 出席 attend the meeting 参加会议, 出席会议 attend the party 出席宴会 attend the class 上课 Thank you for your attending. 谢谢大 家的出席(到来) Thank you for your listening. 谢谢大家 的听讲
As we were talking about him, he knocked at the door.（正当……时候） Do as you are told. 叫你怎么做就怎么 做(按你被告知的那样去做)（以……方式） As I learned, … （如同……那样） ③ “担任……工作” I work as an engineer.