(共60张PPT)
Section A
1a-2d
Objectives
To learn to understand and use must, might, could and can’t for making inferences (推断)
It must be Mary’s.
The person can’t be a boy.
It could be Mei’s hair band.
The hair band might belong to Linda.
To listen and talk about ownership
whose
truck
picnic
rabbit
attend
valuable
pink
anybody
adj. & pron. 谁的
n. 卡车；货车
n. 野餐
n. 兔；野兔
v. 出席；参加
adj. 贵重的；很有用的；宝贵的
adj. 粉红色的
n. 粉红色
pron. 任何人
New words
Review
Read the sentences.
What kind of words are the underlined ones？
They can swim.
He may have a hard life.
His mother said he must stand there and think seriously.
情态动词
Do you remember what modal verbs are
Modal verbs show the condition of verbs, e.g. ability, necessity, possibility, and must always be used with a main verb.
Review
Can you list all the modal verbs you can remember
can
could
may
might
will
would
must
shall
should
ought to
need
Which modal verbs can be used to make inferences How
can
could
may
might
must
Can you guess what it is
It could be ___________.
It also might be ___________.
a white vase
two faces
could/might “有可能；也许”
Lead-in
Can you guess what it is
It could be _______.
It also might be ___________.
a dog
two girls
She/He can’t be _______.
She/He could/might be _______.
She/He must be __________.
What may he or she be
Presentation
It can’t be _______.
It could/might be _______.
It must be __________.
Where may it be
It can’t be _______.
It could/might be _______.
It must be __________.
What may it be
推测可能性：
must >may >could >might >can’t
100% probably true
100% almost not true
60-80% possibly true
40-60% possibly true
must
may
could/might
can’t
Look at the picture. Write the things you see in the correct columns in the chart.
1a
Clothing Fun things Kitchen things
hat volleyball plate
T-shirt
jacket
baseball cap
toy truck
book (Harry Potter)
magazines (rabbits)
CD (Michael Jackson)
cup
Listen and circle the things you hear.
Listen and match each person with a thing and a reason.
Person Thing Reason
Jane’s little brother volleyball J.K. Rowling is her favorite writer.
Mary toy truck She loves volleyball.
Carla magazine He was the only little kid at the picnic.
Deng Wen book She always listens to pop music.
Grace CD He loves rabbits.
1b
A: Whose volleyball is this
B: It ______ be Carla’s. She loves volleyball.
A: How about this toy truck
C: Hmm … that toy truck _______ belong to Jane’s little brother. He was the only little kid at the picnic. And the magazine must _________ Deng Wen. He loves rabbits.
B: Oh, look, someone left a book.
C: That book must _____ Mary’s. J. K. Rowling is her favorite writer.
A: OK … and how about this CD
C: Hmm … The CD ______ belong to Grace. She always listens to pop music.
听录音，完成下面的对话。
must
must
belong to
be
must
听力原文
Practice the conversation in the picture above. Then make conversations using the information in 1b.
Whose book is this
A: Whose book is this
B: It must be Mary’s.
J.K. Rowling is her favorite writer.
1c
Whose is it
One student quickly collects some things from others while his partners are closing eyes.
Then asks them whose it is.
Things in the schoolbag
1. T-shirt
2.
3.
hair band
tennis balls
Bob and Anna found a schoolbag at the park. Listen and write down the things in the schoolbag.
2a
1. The person _____ go to our school.
2. The person ______ be a boy.
3. It _____ be Mei’s hair band.
4. The hair band ______ belong to
Linda.
5. It _____ be Linda’s schoolbag.
must
can’t
could
might
must
Listen again. Fill in the blanks.
2b
听力原文
2c
Make conversations using the information in 2a and 2b.
A: Look! There’s a schoolbag here.
B: What’s inside
C: There’s a T-shirt. This is our school T-shirt, so the person can’t be attending the school across the road.
What do you think it must be
It must be a man by animals.
What do you think it could be
It could be an elephant in the top.
It could be some kangaroos at the bottom .
Practice
1. What’s wrong with Linda
She can’t find her schoolbag.
2. What’s in the schoolbag
Her books, her pink hair band and some tennis balls.
What did she do yesterday
She attended a concert and went to a picnic after that.
4. Who might have her schoolbag
One of her friends.
Listen and answer some questions.
2d
may/might/can’t/could/must be+地点
may/might/can’t/could/must be+done
may/might/can’t/could/must +have done
其
他
语
言
点
Watch the video and find out what they are talking about.
2d
Whose schoolbag is lost
Read the dialogue in 2d, then answer the questions below.
3. Could her schoolbag be stolen Why
4. Could her schoolbag still be at the park Why
2. What’s in the schoolbag
Check the answers!
Linda’s schoolbag is lost.
No, it can’t be stolen, because there is not anything valuable in her schoolbag.
3. Could her schoolbag be stolen Why
4. Could her schoolbag still be at the park Why
Yes. She left early, before the rest of her friends and someone must have picked it up.
Whose schoolbag is lost
2. What’s in the schoolbag
There are Linda’s books, her pink hair band and some tennis balls in the schoolbag.
may/might/can’t/could/must be+地点
may/might/can’t/could/must be+done
may/might/can’t/could/must +have done
Do you know the meanings of the following phrases and sentences
1. 情态动词表推测时，常与be连用，具体含义如下(语气由强到弱)
情态动词+be 表推测 意义 注意事项
must be 肯定是，一定是，准是 (十有八九) 无否定形式，mustn’t be 不表推测
could be/ might be/ may be 可能是 有否定形式，意为“不可能，可能不”
can’t be 不会是 一般不用肯定形式
Language points
2. It must belong to Carla.
belong to 属于; 是(某俱乐部、组织等)的一员
to是介词, 该短语一般不用于进行时态和被动语态。
belong to 后面接人时，通常可以和名词性物主代词或名词所有格互相转换。
e.g. The piano belongs to her. = The piano is hers.
The house belonged to my grandfather. = The house was my grandfather's.
注意：belong to不用于进行时态。
【运用】完成句子。
1) 我弟弟是足球俱乐部的一员。 (完成译句)
My brother __________ __________ __________ ________________ __________.
2) 狮子和老虎属于猫科。 (完成译句)
Lions and tigers __________ __________ the cat family.
3) This black bike belongs to Linda. (改为同义句)
This black bike __________ __________.
is Linda’s
belong to
belongs to the
football/soccer club
Whose T-shirt is this
It must be ________.
Mary’s
=It must belong to _______.
Mary
must 表推测 “一定；准是”
I’m Mary.
3. I attended a concert yesterday so it might still be in the music hall.
attend vt. 出席; 参加
attend是正式用语, 侧重指参加会议、婚礼、典礼, 去上课、上学、听报告等。
e.g. Our children attend the same school.
Lisa did not attend the wedding.
Please let me know if you could attend the meeting.
join 加入某种组织，团体，并成为其中一员。
join in加入某群体或个人的临时性活动。
take part in参加某种大型的有组织的，集体的活动。
attend v. 出席，参加(会议，婚礼等）（正式用语）
辨析 join， join in，take part in， attend
【运用】用attend, join或take part in的适当形式填空。
1) Linda liked drawing, so she __________ the art club two years ago.
2) Paul was free, so he __________ the lecture(讲座) given by Mr. Li.
3) Do you know how many people ____________ the discussion yesterday
4) I'm sure you'll _________ me in thanking today's speaker.
join
joined
attended
took part in
4. Whose book is this
whose adj. 谁的
No one knows whose dictionary this is.
无人知道这是谁的字典。
Whose sweaters are these
这些是谁的毛衣？
whose 用来对物主代词及名词所有格进行提问：
1)．提问形容词性的物主代词。
These are my bananas.
→ Whose bananas are these
2)．提问名词性的物主代词。
That bedroom is mine.
→ Whose is that bedroom
Hers are in the classroom.
→ Whose are in the classroom
3). 提问名词所有格(不包括of构成的所有格)
Those are the twins’ bags.
→ Whose bags are those
Tom’s mother is a good teacher.
→ Whose mother is a good teacher
4). whose 可针对 my、your、our、their、Kate’ s 等形容词性物主代词提问
who’s和whose的用法
who’s ＝ who is，意思是“谁是”，who可以作主语、宾语或表语;
whose意思是“谁的”，可以作定语、也可作表语，放在名词前，如：
Whose desk is this = Whose is this desk
whose adj. & pron. 谁的
who pron. 谁
whom pron. 谁(宾格)
e.g. ---Whose volleyball is this
--- It must be Carla’s.
whose提问时的回答要用所有格形式，反之，答句有所有格，问句用whose。
5. Well, where did you last put it
last: adv. “上次；最近的一次；最后一次”；用于句末或句中
When I last saw her, she was working in Shanghai.
我上次见她时，她在上海工作。
When did you see him last
你最近见到他是什么时候？
6. Do you have anything valuable in your schoolbag
anything valuable 一些贵重的东西
形容词valuable修饰不定代词anything要后置。
当形容词修饰不定代词something, anything, nothing等时, 形容词应放在不定代词的后面。
【运用】请根据所给汉语提示完成句子。
1) I’d like to buy __________________ (一些漂亮的东西).
2) Is there __________________ (什么有趣的) in today’s newspaper
3) There is ______________ (没有毛病) with my bike.
something beautiful
anything interesting
nothing wrong
7. I think somebody must have picked it up.
must 表推测，“一定”；
must have done 表示对过去的推测，“过去一定做过了”
He’s playing outside. He must have finished his homework.
他在外边玩，一定已经把作业做完了。
8. I’ll call them now to check if anybody has it.
anybody pron. 任何人
常用于否定句或疑问句中;
用于肯定句中时, 相当于any person, “任何人”。
e.g. I will not tell anybody the secret.
Is there anybody in the office
Anybody could do it!
1. This book _____ be Carla’s. Her name is on
the book.
2. Jack’s bike is blue, so this yellow one______
be his.
3. The guitar ______ belong to Alice.
Only she plays the guitar here.
4. - What do you think “upset” mean
- I’m not sure. It ______ mean sad.
Use proper modal verbs to fill in the blanks.
must
can’t
must
might
Exercises
1. 这本书一定是李雷的。他正在找这本书。
This book must be Li Lei’s. He is
looking for the book.
2. 这个发带可能是韩梅的。她喜欢戴发带。
The hair band could be Han Mei’s.
She likes wearing a hair band.
Translate and write down.
3. 这个玩具熊可能是约翰妹妹的。
她还是个小姑娘。
The toy bear might belong to John’s
sister. She is a little girl.
4. 这个排球不是玛丽的。她一点也不
喜欢打排球。
The volleyball can’t be Mary’s. She
doesn’t like playing volleyball at all.
Summary
at the picnic
belong to
hair band
pop music
pick up
野餐
属于
发带
流行音乐
捡到
情态动词 用法 例句
must 表示很有把握的推测，意为“一定”，只用于肯定句。 The light is out. He must be sleeping.
may, could 和 might 表示不太有把握的推测，意为“可能”。 The pen could / might be Joe’s. I saw it on his desk just now.
can’t 表示很有把握的否定推测，意为“不可能”。 The girl here can’t be Helen. Helen has gone to Beijing.
Homework
1. Recite the conversation in 2d.
2. Finish the exercises in the workbook.
3. Preview the new words and expressions.
4. Preview the passage on page 59.
Look after your things,
Goodbye!
join / join in/ take part in/attend
join指加入某个党派, 团体组织等, 成为其中一员, “参军, 入党, 入团 ”。
e.g. join the Army/the Party/the League
join… in 表示和某人一起做某事, join sb. in (doing) sth.
take part in 指参加会议或群众性活动, 着重说明主语参加该项活动并在活动中发挥作用。有时可与join in互换。
e.g. We’ll take part in the sports meeting/club.
take an active part in 积极参加
