(共30张PPT)
人教九上英语同步精品课件
人教版九年级上册
Unit 8 It must belong to Carla.
SectionA Grammar focus-4c
语法精品课
1.学习本课新词汇:laboratory, coat, sleepy, pocket
掌握句型：—Whose volleyball is this
—It must/might/could/can’t be Carla’s.
—It must/might/could/can’t belong to Carla.
2. 运用本单元所学习的must，could，might，can情态动词，表达对事物的推测。同时灵活运用不同的情态动词进行推测，进一步提高口语表达的准确性。
Whose…is this
It \must\might\could\can’t be…
学习目标
Warm up
Guessing Game
I’m Lily.
I like dancing.
Lily _______________ be a dancer when she grows up.
could/may/might
此处could/might/may表示推断，意为“可能”，通常与be连用。
Fill in the blanks with modal verbs.
Guessing Game
This football _____ be Lily’s.
It ______ be Li Ming’s.
can’t
must
此处can’t 表示推断，意为“不可能”。通常与be连用。(否定推测用can't)
I’m Li Ming.
I like playing football.
Guessing Game
The man _____ have a toothache.
must
此处must表示推断，通常与be连用，意为“一定是，肯定是”。 must这种表示推测的用法只用于肯定句中。
I have a toothache.
Can you guess what the picture shows
It must be ______________.
It also could\might be ______________.
a young girl
an old woman
It could be _____________.
It also might be _________.
a white vase
two faces
New words
laboratory [l b r t( )ri]
n.实验室
outdoors
[ a t d (r)z]
adv.在户外；
在野外
coat [k t]
cn.外套；
外衣
sleepy [ sli pi]
adj.困倦的；
瞌睡的
1.表推测的情态动词的意思
must__________ could/might__________ can’t__________
2.情态动词_________(有/没有)人称和数的变化。
3.情态动词后必须跟______________.
观察以下句子，归纳总结表推测的情态动词的用法。
一定,肯定
也许,可能
不可能
没有
V原形
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
1、must
must表示可能性最大的肯定推测，意思是“一定、准是”。只能用于肯定句。如果要表示“一定不”，应该用can’t。
如：她没接电话。她肯定是出去了。
She isn’t answering the phone. She must be out.
他肯定知道答案。
He must know the answers.
2、may/might
may, might表示推测“可能性”时，意思是“可能”，“也许”。might语气更委婉，可能性更小。may, might表推测时，可用于否定句，但不用于疑问句。
如：他可能不在家，不过我也不确定。
He may/might not be at home, but I’m not sure.
迈克为什么没来上课？他可能生病了。
Why didn't Mike come to class He may/might be sick.
3、 can / could
can表示推测“可能性”时，一般用于否定句或疑问句。can在疑问句中意思是“会，可能”。can用于否定句，表示“准不是、一定不是”
如：他不可能拿了她的书包。
He can't pick her schoolbag up.
could 表示某事有可能发生或可能是事实。
如：不要吃它，可能坏了。
Don't eat it. It could go bad.
可能性
might
may
could
can
must
can't
0%-100%
不可能
也许，可能(4个)
肯定,一定
表示推测的情态动词
(1) “情态动词+动词原形”，表示对现在的事情的推测。
我不知道她在哪儿。她可能在武汉。
I don’t know where she is. She may be in Wuhan.
(2)“情态动词+be+动词-ing形式”，表示对正在进行
的事情的推测。
那个穿着西装的男人也许正跑着去赶公共汽车。
The man in a suit might be running to catch a bus.
(3) “情态动词+have+动词的过去分词”，表示
对过去或已经完成的事情的推测。
地是湿的，一定是下过雨了。
The ground is wet. It must have rained.
拓展
【活学活用】
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.
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
must
can’t
may/might/could
may/might/could
can’t
方框里两句都表示______________，
不同点是：belong to后__________________________
be动词后 _________________________________
某物属于某人
直接加人名或人称代词宾格
要用名词所有格形式或名词性物主代词
Grammar Focus
总结:1.belong to 的意思__________
2.be sb’s (sb’s:__________________)
=belong to sb ( sb:___________________)
名词所有格/名词性物主代词
名词/代词的宾格
属于
不能用于进行时态
和被动语态
1.The book must be Mary’s .
The book must ________ _______ _______.
2.The pen must belong to me.
The pen must ________ _________.
belong to Mary
be mine
同义句
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).
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.
Choose the best way to complete each sentence using the words in the brackets.
4a
might be
must be
could be
can’t be
must be
Complete these responses
1. A: Many people are wearing coats.
B: The weather must be________ .
2. A: Sally has been coughing a lot.
B: She might be_________________________.
A: This restaurant is always very crowed.
B: The food ________________ .
4. A: Whenever I try to read this book, I feel sleepy.
B: It can’t _______________________________.
4b
be interesting
cold
must be delicious
/be that boring
/having a cold
ill
/sick
Whenever I try to read this book, I feel sleepy.
【辨析】sleep, sleepy, asleep
sleepy adj. 困的；想睡的。可作定语和表语。
asleep adj. 睡着的。强调状态，常作表语。
fall asleep 入睡；睡着
sleep v. 睡觉 n. 睡眠；睡觉
【语境应用】根据句意, 用sleep, sleepy或asleep填空。
1) Look at that ________ dog.
2) Tom is _____________________. Please keep quiet.
3) I think people need eight hours of ________ a day.
4) Grandpa fell ________ when he was watching TV.
asleep
sleepy
sleep
sleeping / asleep / sleepy
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.
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 boys’ clothes.
4c
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.
It could/might/can’t
be... because ...
I guess so/I don’t think
so. But it might/could/must
be ...because …
Ask and answer in pairs.
Look at the two rooms below. Make guesses about the owner of each room.
I.单项选择
1. —Whose T - shirt is this —It ___ be John’s. It’s ____small.
A. can’t; much too B. can’t; too much
C. mustn’t; much too D. mustn’t; too much
2. — Where are you going this month
— We______ go to Xiamen, but we're not sure.
A. needn’t B. must C. might D. mustn’t
3. — Have you decided where to go for your summer vacation
— Not yet. We _____ go to Qingdao. It's a good place for vacation.
A. may B. need C. must D. can
4. — Must I water the flowers now, mum
— No, you ______. You _____ do it later.
A.mustn’t; must B.mustn’t; may C.needn’t; may D.needn’t; must
A
C
A
C
II.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.
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.
must
can’t
may/might/could
may/might/could
can’t
III.根据汉语意思完成句子。
1.那件蓝色的外套一定是李颖的。
That blue _____ ______ ________ _____ Li Ying.
2.现在他或许已经离开了，刚才他说要离开的。
He ______ _____ ______ now. He said he would leave just now.
3.那栋房子不可能是布莱克先生的，他没有足够的钱买它。
The house _____ ____ Mr. Black’s. He doesn’t have enough money to buy it.
4.琳达一定在家，她说她会在家等我。
Linda _____ _____ at home. She said she would wait for
me at home.
coat must belong to
might have left
can’t be
must be
1. DVD It can’t be Mike’s. He doesn’t like to watch movies.
2. bowl of ice-cream
_________________________________
3. camera_________________________________
4. cookbook_________________________________
5. tennis ball_________________________________
6. running shoes_________________________________
It can’t be Todd’s. He doesn’t like to eat sweet food.
It must be Jessica’s. She likes taking photos.
It can’t be Annie’s. She doesn’t like to cook.
It must be Mike’s. He likes to play tennis.
It can’t be Jessica’s. She doesn’t like to run.
Name Likes Dislikes
Jessica take photos run
Todd play the piano eat sweet food
Mike play tennis watch movies
Annie read cook
Look at the chart and
write sentences for
the things below.
Homework
谢谢
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