Unit 8 It must belong to Carla
Section A (Grammar Focus－4c)教案
【教学目标】
1. 语言知识目标：
1) 学习掌握下列词汇：laboratory, coat, sleepy, pocket
2）进行一步复习巩固学习Section A 部分所学的生词和词组。
3）掌握情态动词的用法和物体所属的句型。
2. 情感态度价值观目标：
面对身边暂时不可解释的现象，根据已有证据进行合理推测。不信谣，不传谣。
【教学重难点】
1. 教学重点：
1) 复习巩固Section A 部分所学的生词和词组，达到熟练运用的目标。
2) 总结情态动词的用法。
2. 教学难点：
1) 学习运用情态动词的用法。
2) 掌握物体所属的句型。
【教学过程】
【课堂导入】
Step 1 Revision
1.By playing games, lead in how to make inferences.
2.Play games
Game 1 Making guesses
1)It might be 3 birds. It also could be a beautiful face
2)It could be a white vase. It also might be two faces
Game 2 Making guesses
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.
C: It also could be a girl, the rose might be a gift from her boyfriend.
D: Look at the dictionary, I think the owner may be learning Chinese now.
【课堂活动】
Step 2 Grammar Focus
1.Ask different students to read the sentences. Write them on the blackboard.?
2.Ask a student to go to the front to circle the model verbs.?
3.Ask students to find the usage of the model verbs.?
情态动词表示推测的意义和用法小结
句式 情态动词 含义 用法
肯定句 must 一定 表示有把握的肯定推测。
may/ might/ could 也许；可能 表示没有把握的肯定推测。
否定句 can’t/ couldn’t 不可能 表示有把握的否定推测。
may not/ might not 可能不 表示不太有把握的肯定推测。
疑问句 can/ could 可能 表示推测。
情态动词表示推测的意义和用法
He must be very happy when he heard the news.
He may be in his office but I’m not sure.
That man can’t be your teacher. He’s much taller.
It may not be right, but that’s what I think.
— Can the news be true — No, it can’t be true.
（1）情态动词表示推测时，无时态区别，只有语气差别。表示推测的情态动词的语气强弱顺序（由强到弱）：
must ＞ can ＞ could ＞ may ＞ might
（2）含有must的句子（must表推测）变为否定句时，要用can’t。
He must be at home. →
He can’t be at home.
（1）情态动词+动词原形：表示对现在事情的推测。
This book must be Jim’s because his name is on it.
（2）情态动词+be+动词-ing：表示对正在发生的事情的推测。
My mother might be cooking in the kitchen.
（3）情态动词+ have +动词的过去分词：表示对过去情况的推测。
The ground is wet. It must have rained last night.
Step 3 Exercise (4a)?
1.Learn new word and phrase：laboratory，in the laboratory。?
2.Make students understand the meaning of questions, then finish 4a.?
3.Check the answers.?
Step 4 Exercise (4b)?
1.Learn new words：coat，sleepy。?
2.Make students understand the meaning of questions in 4b, then finish it.?
Step 5 Pair Work (4c)?
Point out the sample conversation in the box. Invite a pair of students to read it to the class.?
Get students to work in pairs. As the pairs work together, walk around the classroom offering help as needed.?
Ask several pairs to act out their conversations to the class.
Finish the exercise in 4c.
Step 6 Exercises
Choose the correct answer.
1. — Excuse me. Is this the right way to the Summer Palace
— Sorry, I am not sure. It ________ be.
A. might B. will C. must D. can
2. — Isn’t that Ann’s husband over there
— No, it ____ be him—I’m sure he doesn’t wear glasses.
A. can’t B. must not C. won’t D. may not
3. You ______ be tired—you’ve only been working for an hour.
A. must not B. won’t C. can’t D. may not
4. — Is John coming by train
—He should, but he ________ not. He likes driving his car.
A. must B. can C. need D. may
Step 7 Summary
【课堂小结】
1.We have further learnt the key words and phrases in this section. through communication and expression,
2. We can understand and use the modal verbs “must, may, could and can‘t ” to make inferences.
3. We are able to use modal verbs and related sentence patterns to make reasonable inferences about things.
【课堂训练】 PPT(共28张PPT)
英语（人教版）
九年级全册
English
Unit 8
It must belong to Carla.
Section A（Grammar focus-4c）
It______ be __________.
It also ______ be ______________.
three birds
a beautiful face
might
could
Making guesses
1
课堂导入
It_______ be _________________.
It also _______ be ______________.
a white vase(花瓶)
two faces
could
might
Making guesses
Look at the things in the schoolbag below.
Make guesses about the owner of the schoolbag.
Making guesses
Chinese-English Dictionary
baseball glove
Oxford University
keys
Jazz
earrings
Making guesses
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.
C: It also could be a girl, the rose might be a gift from her boyfriend.
D: Look at the dictionary, I think the owner may be learning Chinese now.
Making guesses
Whose volleyball is this It must be Carla’s. She loves volleyball.
Whose hair band is this It could be Mei’s hair band. Or it might belong to Linda. They both have long hair.
What did you see that night I’m not sure, but it can’t be a dog. It was bigger. I think it might be a bear or a wolf.
Grammar Focus
2
课堂活动
句式 情态动词 含义 用法
肯定句 must 一定 表示有把握的肯定推测。
may/ might/ could 也许；可能 表示没有把握的肯定推测。
否定句 can’t/ couldn’t 不可能 表示有把握的否定推测。
may not/ might not 可能不 表示不太有把握的肯定推测。
疑问句 can/ could 可能 表示推测。
情态动词表示推测的意义和用法小结
He must be very happy when he heard the news.
He may be in his office but I’m not sure.
That man can’t be your teacher. He’s much taller.
It may not be right, but that’s what I think.
— Can the news be true
— No, it can’t be true.
情态动词表示推测的意义和用法
（1）情态动词表示推测时，无时态区别，只有语气差别。表示推测的情态动词的语气强弱顺序如下（由强到弱）：
must ＞ can ＞ could ＞ may ＞ might
（2）含有must的句子（must表推测）变为否定句时，要用can’t。
He must be at home. →
He can’t be at home.
情态动词表示推测的意义和用法
（1）情态动词+动词原形：表示对现在事情的推测。
This book must be Jim’s because his name is on it.
（2）情态动词+be+动词-ing：表示对正在发生的事情的推测。
My mother might be cooking in the kitchen.
（3）情态动词+ have +动词的过去分词：表示对过去情况的推测。
The ground is wet. It must have rained last night.
不同形式的情态动词表示不同的含义
1. A: Where’s Jean
B: I’m not sure. She ___________ (is / might be / must be) in the laboratory.
2. A: Everyone is going to the pool after school.
B: Really It _____________ (must be / can’t be / could be) hot outdoors.
3. A: That’s the phone.
B: Hmm. I wonder who it _____________ (must be / could be / should be).
4a
might be
must be
could be
Choose the best way to complete each sentence using the words in brackets.
4. A: I wonder if these are Jim’s glasses.
B: They _____________ (can’t be / might be / could be) his. He doesn’t
wear glasses.
5. A: I hear water running in the bathroom.
B: It ________________ (could be / must be / can’t be) Carla. She was
thinking of taking a shower.
must be/ could be
can’t be
Complete these responses.
4b
1. A: Many people are wearing coats.
B: The weather must be _______________________.
2. A: Sally has been coughing a lot.
B: She might be ______________________.
3. A: This restaurant is always very crowded.
B: The food _________________.
4. A: Whenever I try to read this book, I feel sleepy.
B: It can’t _____________________________.
getting colder/ cold outside
having a sore throat/ ill
must be delicious
be interesting/ exciting
She was thinking of taking a shower.
例：约翰喜欢在运动后洗个热水澡。
John loves taking/having a hot shower after exercise.
Language points
take a shower 意为“洗淋浴”，相当于 have a shower.
shower 是名词，意为“淋浴；淋浴器”
Whenever I try to read this book, I feel sleepy.
每当我试图读这本书时，我都感觉到困倦。
本句是whenever 引导的时间状语从句。
sleepy是形容词，意为“困倦的；瞌睡的”。
sleepy adj. 困倦的；瞌睡的
Whenever I try to read this book, I feel sleepy.（教材P60 4b）
sleepy是形容词，意为“困倦的；瞌睡的”，可作定语或表语。
asleep也是形容词，意为“睡着的”，常用作表语或宾语补足语。
Jim didn’t sleep well last night. He is tired and feels sleepy now and falls asleep soon at his desk.
【妙辨异同】
sleepy
asleep
形容词，意为“困倦的；瞌睡的”。既可作定语，也可作表语。
形容词，意为“睡着的”，只能作表语，不能作定语。fall asleep 意为“入睡”。
What can you see in the picture
What are his/ her hobbies
Why do you think so
Who do you think lives in the room, a boy or a girl
Look at the picture and answer the following questions.
Look at this picture of a room. How much can you tell about the person who lives here Is it a boy or a girl What are his/her hobbies Discuss your ideas with a partner.
4c
I guess so. But it might be a boy’s room because the clothes look like boys’ clothes.
It could be a girl’s room because it’s very tidy.
We have further learnt the key words and phrases in this section. through communication.
2. We can understand and use the modal verbs “must, may, could and can‘t ” to make inferences.
3. We are able to use modal verbs and related sentence patterns to make reasonable inferences about things.
3
课堂小结
— Do you know where the __________ （实验室）is
— Yes, I do. It’s in front of the library.
2. Don’t make any _________ (noisy) when you are in the library.
_________ (wolf) are usually friendly and helpful to each other when living
in groups.
4. I stayed up last night. So I feel _________ (sleep) in class today.
Some ____________ (policeman) went to the scene and searched for more details.
laboratory
Wolves
noise
policemen
一、词语运用
sleepy
4
课堂训练
1. Life is changeable. No one knows what _________ happen in the future.
A. should B. need
C. have to D. might
2. — Look! The man welcoming us at the school gate _____ be our headmaster.
— No, it _______ be him. He is having a meeting in the office now.
A. must; can’t B. must; mustn’t
C. can’t; mustn’t D. mustn’t; can
D
A
二、单选
3. — Is the man over there Adam
— It ______ be him. He has gone to Hong Kong on vacation.
A. must B. can’t
C. mustn’t D. might
4. — Did you hear any strange _____ when the earthquake happened
— No, I was in my garden enjoying the beautiful ______ of my birds at that
time.
A. noise; voice B. noise; sound
C. sound; noise D. sound; voice
B
D
三、根据句意, 从方框中选择正确的情态动词填空, 每项限用一次。
should, must, can’t, may not, mustn’t
1. That ______ be Lucy. She has gone to Beijing on business.
2. There _________ be something wrong with my watch. It isn’t working now.
can’t
must
3. He ________ know the answer, either. Let’s ask that policeman.
4. You _______ swim in the river. It’s dangerous.
5. You ________ look after your parents when they become older. It’s your duty.
may not
mustn’t
should
四、用适当的情态动词填空。
1. — Susan has bought a large house with a swimming pool.
— It ______ be very expensive. I never even dream about it.
2. — Listen! Is Mr. Green giving a report in the hall
— No, it ______ be him. He has gone to Japan.
must
can’t
3. Ann hasn’t come to school today. I think she
________________ be ill.
4. The guitar _______________ belong to Alice. She likes
playing the guitar.
5. — I wonder if this is Jack’s book.
— It ______ be his. It has Linda’s name on it.
may/might/could
can’t
may/might/could
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