新概念英语第一册 Lesson 45-46 （共25张PPT）

(共25张PPT)
Lesson45-46
The boss's letter
/ ter bl/
Vocabulary
(3) minute n. 分（钟）；片刻
同类词： 秒second /'sek( )nd/
in a minute 立刻，马上
minutes 会议记录
wait a minute
minute hand 分针
Vocabulary
(4) ask v. 询问，要求
常用结构：ask sb to do 要求某人做某事
ask sb. for sth. 向某人要某东西
e.g. Mum asks me to finish homework before watching TV.
Ask Bob ______ the letter, please.
A. to type B. for type
Vocabulary
(5) handwriting n.书写，笔迹，书法
e.g. Now some students'handwriting is terrible.
注意：handwriting是抽象名词，所以只有单数形式。
(7) lift v. 拿起，搬起，举起
n. 电梯（英式英语）---elevator（美式英语）
/ el ve t (r)/
e.g.He wants to lift the sleeping cat, but that fat cat is too heavy.
举重：weight-lifting
常用短语：take a lift 乘电梯
Vocabulary
(9) biscuit n. 饼干
近义词：cookie / k ki/
曲奇
Vocabulary
Text: The boss's letter
Q: Why can't Pamela type the letter
Text
The BOSS: Can you come here a minute please,Bob
BOB: Yes,sir
THE BOSS: Where's Pamela
BOB: She's next door. She's in her office,sir.
THE BOSS: Can she type this letter for me Ask her please.
BOB: Yes,sir.
BOB: Can you type this letter for the boss please,Pamela
PAMELA: Yes,of course I can.
BOB: Here you are.
PAMELA: Thank you,Bob.
PAMELA: Bob!
BOB:Yes What's the matter
PAMELA: I can't type this letter.
PAMELA:I can't read it! The boss's handwriting is terrible.
Grammar
情态动词
有一定的词义，但词意不完整,不能单独作谓语，必须和实义动词连用,表说话人对某一动作或状态的态度和看法。情态动词后面跟动词原形，没有人称和数的变化。
1)can和could
例 句
1)My mother can use the computer now.
2)She can swim fast , but I can’t .
3)Can I play football now , Mum
4)You can use my dictionary.
5)Can the news be true
6)He can’t have gone there alone.
用法
can
表能力
表请求、
允许
表推测
(否、疑)
could
1)He could write poems when he was ten.
2)She couldn’t understand me at that time
3)Could I ask you a question
表过去
能力
表委婉请求
can和be able to表示能力时用法相同。can
只有现在和过去时，而be able to则有更多的
时态形式。be able to 强调通过努力获得的能力，而can则强调自身已具有的能力。
I can run fast.
Will you be able to come
can/could,be able to区别
2）may与might
may
例 句
1)May I borrow your typewriter
Yes,you may.
No,you mustn’t. / No,you can’t.
2)It may rain tomorrow.
She may be at home.
用法
表请求
许可
肯定句
表推测
might
1)He is away from school.He might
be sick.
表推测
可能小
3)must/have to
must
例句
用法
1)You must stay here until I come back.
2)Must I hand in my homework right now
No,you needn’t./don’t have to.
Yes,you must.
3)The light is on,so he must be at
home now.
4)It must have rained last night.
表主观
看法
肯定句
表推测
have to
1)It’s too late,I have to leave now.
2)You won’t have to wait for me.
表客观
需要
have to表客观上的需要,可用于现在时、将来时和过去时。Must表个人意志和主观上的需要，用于现在时和将来时;表规章制度Must为必须,mustn’t为禁止,回答must问句,肯定用must,否定用needn’t或don’t /doesn’t have to表不必;must还表示肯定的推测。
用Must,have to填空
1.I know I ______ study hard.
2.My mother is ill. I ________ look after
her at home.
Must,have to区别
can,may/might,must表推测
Can用于否定句和疑问句,相当于be impossible;
may/might 相当于be not certain,用于肯定句,
might可能性低于may;must相当于be certain,
表有把握的揣测 。
用can,may/might,must填空
1.Please ask that man.He ______ know that.
3.It ______ be Wei Fang.She is at school now.
4.—Are you coming to Jeff’s party
—I’m not sure.I______go to the concert instead.
4)need
1)Need作情态动词时,表“必要”,多用于否定句或
疑问句,一般不用于肯定句。回答need问句,肯定
用must,否定用needn’t。 No,you needn’t.
Need I stay here any longer Yes,you must.
We needn’t hurry.
2)need作实义动词,有人称、数和时态变化,后多接
动词不定式。
He needs a new coat.
用Need的适当形式填空。
1)He ______ money now.
2)______ she ______ to bring the book here
3)We ___________________ work that day.(not)
4)The boy ____________ any help.(not )
1 -He___ be in the classroom, I think. -No, he ___ be in the classroom. I saw him go home a minute ago. A. can; may not B. must; may not
C. may; can't D. may; mustn't
3 Even the top students in our class can't work out this problem, so it___be very difficult.
A. may B. must C. can D. need
1 The children___ play football on the road.
A. can't B. can C. mustn't D. must
2 You ___ be late for school again next time.
A. mustn't B. needn't
C. don't have to D. don't need to
3 -Must I do my homework at once -No, you___. A. needn't B. mustn't C. can't D. may not
1 His arm is all right. He___ go and see the doctor.
A. has not to B. don't have to
C. haven't to D. doesn't have to
4. –May I go to the cinema, Mum --Certainly. But you ___ be back by 11 o’clock.
A.can B.may C.must D.need
6. –May I go out to play basketball, Dad --No, you ____. You must finish your homework first.
A. mustn’t B. may not
C. couldn’t D. needn’t
7. –Where is Jack, please --He _____ be in the reading room.
A. can B. need C. would D. must
16. It’s still early. You ______.
A. mustn’t hurry B.wouldn’t hurry
C.may not hurry D.don’t have to hurry
4. __________ I finish the work today 　
No, you needn’t.
A. Must B. May C. Can D. Need
一、根据句意和汉语意思及首字母提示写出所缺的单词
1. The man is our ________（老板）.
2. Yesterday my mother a_______ me to help her.
3. His ____________（书写）is not good. I can’t read it.
4. The box is too heavy for me to ________（搬起）.
5. –How was your trip
–It was ____________（糟糕的）. I won’t go there again.
cupboard / k b (r)d/ n.橱柜,碗柜