新概念英语第二册-Lesson17课件

2. must的否定形式must not表示“不应该”、“禁止”、 “不准”。语气比较强烈。① You mustn’t speak like that.(你不应该像那样讲 话。） ②You mustn’t be late for school.（你不应该上学迟 到。） 3.在回答must的问句时，肯定形式用must来回答，但否 定形式用needn’t 或don’t have to来回答。而不用 mustn’t来回答。例如： ①——Must I be home before 8 o’clock? —— Yes, you must. No, you needn’t./No, you don’t h ave to.
（二）、have to 表示“必须”、“不得不”，例如： ① He has to stay in bed for 3 or 4 days. ② We will have to get up early tomorrow. 补充：have got to是 have to的口语形 式。 ①I’ve got to leave for Nanjing.
Lesson 17 Always young
★ appear ① vi. 出现，显露（反义词是disappear） The ship appeared on the horizon(地平线). ②appear as 扮演……角色 He appeared as a prince.
③ vi. 似乎，看起来好象（与seem同义）， 显得(系动词，后面直接加形容词) He appears nervous. 他显得很紧张(看起来) Now it appears you are wrong. He appears to be young
★ bright adj. 鲜艳的 ①The sun was very bright . ② The boy is very bright . ③ He has a bright future. bright red 鲜红色； bright yellow 明黄色； bright blue 宝蓝色
★ stage n. 舞台 on the stage：在舞台上 in the stage：在某一阶段,时期 in the early stage in our history 。 在我们的历史早期。
*Must与 have to的区别： must表示的是说话人的主观看法，而have to则 表示的是客观需要。Must一般只有现在时， 而have to有更多的形式。 ①I must go now.(主观看法) ② My mother is ill, so I have to go now.(客 观需要)
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 The boy is in green. She is in jeans . wear wear a beard 留胡子 [n]穿戴的衣服 men’s wear underwear 内衣
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!'
Must+原形…… (1)＝have to“不得不，必须” I must go to school =I have to go to school . have to……可以有任意时态 She will have to... She doesn’t have to She had to... She has to... She has/I have had to... (2)（对现在的）推测 对现在的推测：must do 对过去的推测：must have done She must be in the classroom now . She must have done her homework , because I saw him singing in the room .
6、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 What are you want to be when you are grown up . be grown-up 作为一个成年人
• 1.----Must I do it now? -----No, you _______. • A. needn’t B. don’t have to C. mustn’t D. A or B • 2.It’s nearly seven o’clock. Jack ______be here at any time. A. must B. need C should D can. • 3.When can I come for these photos? I need them t omorrow afternoon. ------They ____be ready by 12:00. • A. can B. should C. might D. need
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) =despite in spite of this 尽管如此 In spite of this, I still like school.
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 上帝 ； Goddess 女神 (God 上帝,注意 “G” 大写)
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 at least 至少, 最少 He's been away for at least a week. at most 最多 There were at most 350 people in the hall . 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
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. ② 作为连词，可以表示“因为”、“正当……时候” You must take care of the bady tomorrow as I am going to London.（因为，由于） As we were talking about him, he knocked at the door.（正当……时候） Do as y……方式）
4、Jennifer will have to take part in a new play soon. join 参加了某一种团体,成为其中一员 join the army 参军 join the party 入党 join in :参加入一种娱乐活动或者游戏 join in the game take part in :参加某一种活动 take part in the race 参加比赛 take part in a play take part in the sports meeting . attend：出席 attend the meeting . attend the party 出席宴会
Can you answer these questions?
1) What does Aunt Jennifer do and how old is she? My aunt Jennifer is an actress and She must be at least thirty-five years old. 2) What part does Jennifer often act on the stage? She often appears on the stage as a young girl. 3) What does she think of being grown up? It must be terrible to be grown up
【课文讲解】
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.