新目标(Go for it)版>九年级全>Unit 5 It must belong to Carla.>Section A>3a=4

(共45张PPT)
Section A
Period Two
To learn to understand and use must, might, could and can’t for making inferences
To read and speak about why you are anxious
Review
Words and expressions
Read the words and expressions loudly.
drop
symphony
optometrist
appointment
crucial
make up
v. 落下; 掉下
n. 交响乐; 交响曲
n. 验光师; 配镜师
n. 约会; 约定
adj. 关键的；至关重要的
形成; 组成; 构成
Words and expressions
final
anxious
worried
owner
Oxford University
adj. 最后的; 最终的
adj. 忧虑的; 焦虑的;
不安的
adj. 烦恼的; 焦虑的
n. 所有者; 业主
牛津大学
Words and expressions
There are five people in Dick’s family. Mr. Smith is a worker. Mrs. Smith is a housewife. Dick’s sister Grace is 20. She has long hair and she likes music. Dick is a 13-year-old boy. He likes sports and can play the guitar. Mark, Dick’s brother is just 3 years old.
Read the passage and remember the information.
Whose --- is this Why
The …might / could / must / can’t be Mr Smith,
　 because …
2. The … might / could / must can’t belong to
Mr. Smith, because…
Mr. Smith, Mrs. Smith, Grace, Dick, Mark
It could be
__________.
It also might be
______________.
Can you guess what it is
Three birds
a beautiful face
Here is a thank-you message Linda wrote to Ann. but it is not in the right order. You read it and put it in the right order.
Answers:
5 2 4 3 1
3a
5
4
3
2
The lost thing:__________________
The place that she lost it:
___________________
Why is Linda so anxious
Why does Linda really need her backpack
Why is the math test very crucial
Where was Anna when Linda called her
What does Linda want Anna do
Linda’s backpack
in the symphony hall
Why is Linda so anxious
2. Why does Linda really need her
backpack
3. Why is the math test very crucial
Because she can’t find her backpack.
Because she has a math test tomorrow.
Because it makes up 30% of the final exam.
4. Where was Anna when Linda called her
5. What does Linda want Anna do
She was still at her optometrist appointment.
Linda wants Anna to call back, if she has any idea where it might be.
When you read the message, you must meet some words you don’t know. Circle them and talk about them. Use can’t, must, could or might.
Circled words may include:
symphony; optometrist; appointment; crucial
When you read the message,
you must meet some words
you don’t know. Circle them
and talk about them. Use can’t, must, could or might.
Talk about the words you don’t understand. Use “can’t”, “must”,
“could” or “might”.
3b
A: What do you think “anxious” mean
B: Well, it can’t mean “happy”.
A: It might mean “worried”.
B: Oh, yes. She is worried because of her
test.
A: What do you think “concert” mean
B: Well, it can’t mean “music”.
A: It might mean “a performance of
music by players or singers”.
B: Oh, yes. She was in the symphony hall.
Oral practice
Subject: Thanks! From: Susan
Dear Sandy, When you left a package for me yesterday, I
had difficulty waiting until my birthday to
open it. I don’t know how to thank you for such
an attractive present. It is something that will
give me pleasure for a long time to come.
Please accept my sincere thanks and best
wishes.
Thanks,
Susan
One sample thank-you letter:
Look at the things in the backpack below. Make guesses about the owner of the backpack. Write your ideas in the chart. Then talk about your ideas.
4
Can’t Could\might Must
be a boy
A: Here are some earrings. The owner
can’t be a boy.
B: Well, it could be a boy. The earrings
might be a present for his mother.
Sample conversation
-- Here is a Chinese-English dictionary. It could belong to Mary. I know she has one.
-- I don’t think so. It can’t be Mary’s. This one is new, but hers is old.
Sample conversation 1:
A: Here are some earrings. The owner can’t be a boy.
B: Well, it could be a boy. The earrings might be a present for his mother/friend.
Sample conversation 2:
A: Here is a Chinese-English dictionary. It could belong to Mary. I know she has one.
B: I don’t think so. It can’t be Mary’s. This one is new, but hers is old.
Sample conversation 3:
A: Here is a flower. The owner must be a girl.
B: Well, it could be a boy. The flower might be a present for his teacher.
Oral practice
Tomorrow is Teachers’ day. We will give
our English teacher a present. Can you
guess what is in the box
A: Do you know what is in the box
B: I guess it must be a card.
A: I don’t think so. I think it might
be a scarf.
B: why
A: …
Look at the picture.Write a paragraph
telling what you think is happening. Use
the words can’t, could, might, and must.
ring watch birthday sister
It’s crucial that I study for it because it makes up 30 % of the final exam.
【经典习题】翻译句子：
(1) 我们有必要掌握一门外语。
It’s ______ ____we master one foreign language.
(2) 很遗憾你没赶上早班车。
It’s __ ____ ___ you missed the early bus.
【要点点拨】在结构“It’s + 形容词/(a/an+)名词(短语)+ that从句”中 , it为形式主语，而that从句为真正的主语。
crucial that
a pity that
表示推测的情态动词有must, may, could, might, can。
must表示说话人对事物的推测可能性的程度非常大，意为“一定；准是”；表示有把握的否定推测时用can’t，意为“不可能”。如：
1. I can’t find my keys. I must have left
them at home.
2. -- Is she Mary
-- That can’t be her. She’s in hospital.
can表示“可能”，常用于否定句、疑问句中。could为can的过去式，表示推测的语气较can弱。如：
-- Can the man there be our math teacher
-- He may be, but I am not sure.
may意为“也许”。might为may的过去式，表示说话人对现在或将来不太确定的可能性的推测。如：
Li Ming might get here in time, but I am not sure.
意思 推测程度
must 一定，肯定 100%的可能性
may
might
/could 有可能，
也许 20%---80%的可能性
can’t 不可能，
不会 可能性几乎为零
1. -- Whose book is this
-- It must be Mary’s.
It must belong to Mary.
3. The hair band might belong to Linda.
might be Linda’s.
2. -- Whose French book is this
-- It could be Ali’s. She studies French.
4. The T-shirt can’t be John’s.
It’s much too small for him.
(肯定; 一定)
(可能)
(可能)
(不可能)
课时重点回顾
1. I didn’t hear the phone. I ___ a sleep.
A. must be B. must have been
C. should be D. should have been
2. Mary ____ be in Paris. I saw her in town
only a few minutes ago.
A. mustn’t B. shouldn’t
C. can’t D. may not
Choose the best answer.
3. Peter ____ come with us tonight, but
he isn’t very sure yet.
A. must B. may C. can D. will
4. I thought you ____ like something to
read, so I have brought you some books.
A. may B. might
C. could D. must
1. - Are you going to Beijing by plane
- It’s fast, but expensive. So I am not
sure. I ____ take a train. (07江西)
A. should B. may C. must D. will
2. - Is John coming by train (07苏州) - He should, but he ____ not. He likes
driving his car．
A. must B. can C. may D. need
中考真题链接
3. - ____ I swim in that river (07内江市)
- No, you __. It’s dangerous to swim in it.
A. Must, can’t B. Can, may not
C. May, mustn’t 4. The students ____ play basketball after
school every day. (07内江市)
A. allow to B. are allowed to
C. were allowed to
中考真题链接
What’s the most strange thing happened on you
What would you do if something strange happened
Review the new words and
expressions.
2. 发挥想象，连词成文(50-100字)。
drop, crucial, appointment, make up final, anxious
worried, owner