Unit 5Unit 5

清华附中初三英语备课组

No.1

Whose watch is this?

could /might be

can’t bemust be

Whose watch is this?

Bond

Jimmy

It might be Bond’s.

It can’t be Bond’s.It must be Jimmy’s.

Whose watch is this?

Charmaine

Cathy

It might be Cathy’s.

It can’t be Cathy’s.It must be Charmaine’s.

A: What is it?B: It might / could be a .A: Look more carefully!B: It must be a .

No.2 What is it?

A: What is it?B: It could / might be a .A: Pay attention!B: Oh, it must be a .

A: What is it?B: It could / might be (a) .A: Look more carefully!B: It can’t be (a) .It must be (a) .

Vocabulary List

• belong• belong to• author• picnic

1b1b

thing person reason

Jane’s brother

Mary

Carla

Deng Wen

Grace

Listen and fill in the chart.

toy car He was the only kid.

book Hemingway is her favorite author.

volleyball She loves volleyball.

magazine He loves cats.

CDShe always listens to

classical music.

Conclusion:The … must be…, because…

◆ 单数： Mary’s book

◆ 复数： Teachers’ Day

Children’s Day

◆ 无生命： a map of China

名词所有格名词所有格

◆ belong to 表示“属于某人”，“归某人所有”。和 be someone’s 含义基本相同。e.g. That CD belongs to Grace.

= That CD is Grace’s.

◆ belong to 中的 to 是介词，后面需要接名词或代词的宾格形式，而 be someone’s 中有 be 动词，根据意思需要后面要接名词的所有格形式或名词性物主代词。

belong tobelong to

That new dress belongs to me.That new dress is mine.

◆ : true （ 100% 的可能性）◆ : possibly true （ 20%~80% 的可能性）◆ : not true （可能性几乎为零）

must

might / could

can’t

WhileWhile wewe areare makingmaking guessesguesses:: WhileWhile wewe areare makingmaking guessesguesses:: WhileWhile wewe areare makingmaking guessesguesses::

◆ must 表示推测时，只用于肯定句中，表 示“一定、肯定”。◆ 否定句中用 can’t, 表示“不可能”。e.g. Look, the lady over there must be Ms. Zhang. I have seen her wearing this dress.

No, that can’t be Ms. Zhang. She has gone to Australia.

WhileWhile wewe areare makingmaking guessesguesses::

1. She ______ be ill because her face looks pale. A. can B. must C. need D. mustn’t

B

2. ----Who is the man over there? Is it Mr. Li? ----No, it ______ be him, Mr. Li is much taller. A .mustn’t B. may not C. can’t D. needn’t

C

Practice:Practice:

1. This dictionary _____ be mine . It has my name on it .

2. That CD ______ be Tony’s, because he dislikes listening to pop music.

can’t

must

3. The little girl ______ be Mrs. Green’s daughter, because their eyes look alike.

could/might

Fill in the blanks with “Fill in the blanks with “mustmust”, “”, “mightmight”, “”, “couldcould” or “” or “can’tcan’t”.”.

1. -- Look! What’s the driver doing? -- He ___ the car by the road.A. must be repairing B. must repairC. may repair D. could be repairing2. -- Look, it ___ be Mr. Zhang.

-- No, it ___ be Mr. Zhang. He has gone to Paris.

A. may; mustn’t B. must; mayC. must; can’t D. can; may not

A

C

Choose the right answer.Choose the right answer.

3. You ___ be tired – you’ve only been working for an hour.

A. must not B. won’t C. can’t D. may not4. You might just as well as tell the manufacturer

that male customers ___ not like design of the furniture.

A. must B. shall C. need D. may5. After a long walk, the old man ___ be tired now.A. can B. must C. has to D. need6. -- What’s behind the door? -- There ___ be a dog behind it, because I’ve

seen the brown tail.A. can’t B. should C. must D. might

C

D

B

C

◆ must 表示推测时，它的反意疑问句中的附加成分应根据 must 后的动词选用与主语相对应的形式。

WhileWhile wewe areare makingmaking guessesguesses::

1. It can’t be your father, ___?A. can’t it B. isn’t it C. can it D.

is it

2. They must be wrong, ____________?3. He must have finished the work,

____________?

D

aren’t they

hasn’t he

Practice:Practice:

No.3

Whose cat is it?

1 2 3

4 5 6

The cat could/might/can’t be/belong to ____.

赵本山

陈佩斯

张曼玉 周杰伦

冯巩 崔永元

Vocabulary List

• hair band• possibly

Vocabulary ListVocabulary List