【2024秋人教九全英语精彩课堂（课件）】Unit 8 It must belong to Carla.SectionA Grammar Focus-4c

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人教九上英语同步精品课件
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Grammar Focus
2024秋人教九全英语精彩课堂精品课件
Unit 8 It must belong to Carla.
Section A
Grammar Focus-4c
● To learn must, might, could and can’t
for making references
Learning Objectives
Revision
感到不安
玩得高兴；过得愉快
起初
走开；离开
不寻常的某些事
在社区里
1. feel uneasy
2. have fun
3. at first
4. go away
5. something unusual.
6. in the neighborhood
Warm-up
Guess what’s this
I think it might be ...
can be...
must be...
could be
a cat
a dog
a bear
Presentation
Grammar Focus
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.
Let’s read
2. —这是谁的发带？
— ______ ____ ____ is this
—它可能是梅的发带。或者可能属于琳达。她们两人都是长头发。
—It _____ be Mei’s hair band. Or it _____ belong to Linda. They ____ have long hair.
could
might
both
Whose hair band
1. 这是谁的排球 ______ ________ is this
这一定是卡拉的。她热爱排球运动。
It _____ be _______. She loves volleyball.
Whose volleyball
must Carla’s
must 一定，肯定。推测可能性100%,肯定的语气最强
could/might be 可能是/有一定的可能性，没把握
3. —那晚你看见了什么？
— _____ did you see that night
—我不确定，但肯定不可能是狗。它更大。我想也许是一头熊或一匹狼。
— I’m ___ ____, but it _____ ___ a dog.
It was bigger. I think it _____ ___ a bear or a wolf.
What
not sure
can’t be
might be
can’t be 不可能是/在可能性几乎为零,否定的语气最强
表示推测的情态动词
情态动词must，can，could，may和might均可表示推测，它们后加动词原形，对现在的情况作出语气强弱不同的推测。
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 on. He must be at home.
could, may和might 表示不太有把握的推测，意为“可能”。 The pen could / may/ might be Joe’s. I saw it in his pencil case just now.
can’t 表示很有把握的否定推测，意为“不可能”。 The girl in red can’t be Helen. She has gone to America.
Let’s summarize
Match the words with their possibilities.
0%
100%
80%
20%
completely true
possibly true
possibly true
not true
must
could
might
can’t
＞
＞
＞
情态动词用于表推断：
常用于表推断的情态动词有：must, could, might, can’t，其可能性依次递减
注意：
can 表示推测通常不用于肯定句
may 表示推测通常不用于疑问句
must 表示推测通常不用于否定句和疑问句
can不肯，may不问，must 不否问
must，can，could，may和might+have +V.pp表示对过去发生事情的不同推测。
They are playing chess now. They must have finished their homework.
他们在下棋一定是完成作业了。
He may have known it already.他可能已知道了。
You might have caught a cold. 你也许感冒了。
Look！She must be running for exercise.
must，can，could，may和might+be +V.ing
表示对正在发生事情的不同推测。
亨利可能是在做梦。
Henry could be dreaming.
4a
1. A: Where’s Jean
B: I’m not sure. She ________ (is/ might be/ must be) in the laboratory.
might be
n. 实验室
Choose the best way to complete each sentence using the words in brackets.
Let’s practice
2. A: Everyone is going to the pool after school.
B: Really It _______ (must be / can’t be /could be ) hot outdoors.
must be
表示“位移”的动词用现在进行时态表将来，例如：go去，come来，leave离开，arrive到达，return 回来，fly 飞。
e.g. I am coming.=I will come.
He is leaving for Paris.=He will leave for Paris.
adv. 在户外，在野外
3. A: That’s the phone.
B: Hmm. I wonder who it _______ (must
be / could be / should be).
could be
4. A: I wonder if there are Jim’s glasses.
B: They _______ (can’t be / might be /
could be) his. He doesn’t wear glasses.
can’t be
wonder v. “想知道” (want to know)
no wonder+句子，“难怪.....”
e.g. No wonder you are angry.
难怪你觉得生气。
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.
could be/ must be
think of 想要；打算
e.g. I thought of playing basketball.
我想打篮球。
1. A: Many people are wearing coats.
B: The weather must be _____________
____________.
2. A: Sally has been coughing a lot.
B: She might be _____________________.
getting colder/ cold outside
having a sore throat/ ill
Complete these responses.
n. 外套
4b
Let’s complete
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 _______________.
must be delicious
be easy/be that boring
adj. 困的
Here is a picture of a room. Do you know the person who lives here？ Is it a boy or a girl What are his/her hobbies
Let's discuss
Age(young/old)
(a boy/girl)
Hobbies
...
Job
A: It could be a girl’s room because it’s very tidy.
B: I guess so. But it might be a boy’s room because the clothes look like a boy’s clothes.
It could be a girl’s room because it’s
very tidy.
I guess so. But it might be a boy’s room because the clothes look like boys’ clothes.
I can see a girl in the picture. I think it must be a girl’s room.
I guess not. But it might be a boy’s room because in general boys like CD more than girl.
Summary
情态动词
表推测
否定句
疑问句
肯定句
结构：
对现在
对正在进行
对过去
时态：
can 不肯，
may 不问，
must 肯定不否问
情态动词+动原
情态动词+ be+doing
情态动词+have done
can 不肯，
may 不问，
must 肯定不否问
情态动词+动原
情态动词+ be+doing
情态动词+have done
情态动词表推测
1.概念： 情态动词can, could , may, might, must都可以用来表示说话人对某事的推测。
2.结构：情态动词+动词原形（此时动词原形通常为
be）。
含情态动词表推测的用法
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。
（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。
（1） 情态动词+动词原形：表示对现在事情的推测。
You must be hungry after a long walk.
（2）情态动词+be+动词-ing：表示对正在发生的事情
的推测。
They must be waiting for us. Let’s hurry up.
（3）情态动词+ have +动词的过去分词：表示对过去情况的推测。
不同形式的情态动词表示不同的含义
can 不肯，
may 不问，
must 肯定不否问
即：can(could)一般不用于肯定句； may(might)一般不用于疑问句；must 一般仅用于肯定句，不用于否定句和疑问句。
[口诀] 情态动词表推测顺口溜
活学活用
—Who is singing in the next room Is it Mary
—No, it _____ be her. She has gone to New York.
A. can’t B. must C. shouldn’t D. can
A
—Difficulties always go with me!
—Cheer up! If God closed a door in front of you, there _____ be a window opened for you.
A. would
B. must
C. could
D. can
B
Exercises
2. —Look at the boy playing basketball on the ground.
Is it George
—It _____ be him. He told me he would play
basketball after class, but he’s not sure.
A. mustn’t
B. must
C. can’t
D. may
D
1.Required:
Grammar exercises.
2.Optional:
Make a conversation about 4c.
Homework
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