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(共32張PPT)
初中英語人教版九年級
It must belong to Carla.
Unit 3Section A 2d & Grammar Focus 4a-4c
學習目標
通過提供圖片和設置場景，能夠用情態動詞進行相應的推測。
01
通過閱讀對話，能夠理清事實與推斷的區別和關系。
02
通過觀察句子，能夠總結出情態動詞表推測的用法。
03
Let’s talk.
Look at this picture of a room. How much can you tell about the person who lives here Is this person a boy or a girl What are his/her hobbies
Let’s choose and talk.
It could be a _______’s room because it’s very tidy.
I guess so. But it might be a _______’s room, because the jeans on the bed look more like a boy’s.
girl
boy
girl boy
Let’s choose and talk.
Look at the CD on the desk. He/She must be a ______ lover.
I agree. And look at the guitar beside the bed. He/She could be able to play the guitar.
music
music sport
Let’s read.
1. What can you see in the picture
2. Where are they
3. What’s the relationship between them
4. What are they probably talking about
They must be at home. They might be in the living room.
They could be mother and daughter.
They must be talking about the schoolbag.
Curtains, a sofa, a trophy, photos, a clock.
curtain
sofa
trophy
photos
clock
Let’s read.
1. What’s the matter with Linda
2. What things are there in her schoolbag
3. Who took her schoolbag away
She is worried because she can’t find her schoolbag.
Books, her hair band and some tennis balls.
One of her friends.
Let’s read.
Find out what Linda did and what they thought might have happened to her schoolbag.
fact ①
inference ①
fact ②
inference ②
fact ③
inference ③
fact ④
inference ④
Let’s talk.
① I attended the concert.
It might be in the music hall.
Where is Linda’s schoolbag
It can’t be stolen.
② There is nothing valuable in it.
It could be at the park.
③ I went to the picnic with it.
Somebody must have picked it up.
④ I left early, before my friends.
How possible are they
Jack
Whose notebook is this
It ______ be Mike’s.
Look, his name is on it.
Let’s learn.
Jane
Use must, could, might, or can to complete the conversation.
must
100% true
Mike
Jack
Whose ticket is this
I’m not sure. I think it _____________ be Mary’s.
Let’s learn.
Jane
Use must, could, might, or can to complete the conversation.
could / might
20-80% true
80%
Jack
Whose bag is this
It _______ be Jim’s.
Look, there is a pink hair band in it.
Let’s learn.
Jane
Use must, could, might, or can to complete the conversation.
can’t
0%, not true
Let’s learn.
Match the words with their possibilities.
80%
completely true
possibly true
possibly true
not true
must
could
might
can’t
＞
＞
＞
情態動詞用于表推斷：
常用于表推斷的情態動詞有：must, could, might, can’t，其可能性依次遞減
Let’s learn.
1. You must be hungry after a long walk.
2. They could be in the classroom.
3. She can’t be interested in the movie.
情態動詞 + 動詞原形（此時動詞原形通常為be）:
表示對 _______ 事情的推測。
現在
Let’s learn.
1. They must be playing basketball in the park.
2. He could be running for exercise.
3. Mary can’t be reading in the library.
情態動詞 + be + 動詞-ing：
表示對 ____________ 事情的推測。
正在發生
Let’s learn.
1. I can’t find my pen. Somebody must have picked it up.
2. He looks sad. He could have known the truth.
3. She looks happy. She might have finished the work.
情態動詞+ have +動詞的過去分詞：表示對 ____________ 事情的推測。
過去發生
Let’s learn.
He must be in his office.
He could have known the truth.
She can be doing her homework.
Which sentence is wrong
注意：can 表示推測通常不用于肯定句口訣：can 不肯
Let’s learn.
Can he be in his office
May he have known the truth
Could he be doing his homework
Which sentence is wrong
注意：may 表示推測通常不用于疑問句口訣：may 不問
He must be reading in the library.
Must he be at home
He mustn’t be doing his homework.
Which sentence is wrong
注意：
must 表示推測通常不用于否定句和疑問句口訣：must 不否問
A.
B.
C.
D.
（2019·遼寧）The dictionary ________ belong to Sam. You can see his name on it.
can
must
1.
need
would
B
A.
B.
C.
D.
（2019·湖南）Who is singing in the next room？
It ____ be Lisa, but I’m not sure．
must
may
need
can
B
A.
B.
C.
D.
（2019·綏化）That _______ be an alien. There is no such thing!
might
must
3.
can’t
mustn’t
C
A.
B.
C.
D.
（2019·甘肅）Whose cap is this Is it Cindy’s It _______ be hers. Don’t you remember she even didn’t come to the party
can’t
might
may not
must
A
Let’s practice.
Choose the best word(s) in brackets to complete each sentence.
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.
might be
must be
4a
3. A: That’s a cellphone.
B: Hmm. I wonder whose 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.
could be
can’t be
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
Let’s practice.
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 ____________________.
getting cold(er) outside
ill / having a sore throat
4b
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 that boring
Let’s practice.
Fill in the blanks with must, might or can’t.
1. That bright light _____ be a UFO – there’s no such thing!
2. I’m still waiting for the bus, so I __________ be a bit late for the party.
can’t
could/might
Self Check 1
3. That sweater ______ be Carla’s. She’s the only one who wears such colorful clothes.
2. Tony _________ want to go to the concert. He likes music, but I’m not sure if he likes rock music.
must
might
5. The person you saw at the supermarket ______ be Susan. I just talked to her on the phone, and she’s at work right now.
can’t
Let’s practice.
Look at the chart and write sentences for the things below.
Self Check 2
Name Likes Dislikes
Jessica take photos run
Todd play the piano eat sweet food
Mike play tennis watch movies
Annie read cook
1. DVD ________________________________________
It can’t be Mike’s. He doesn’t like watching movies.
Let’s practice.
Name Likes Dislikes
Jessica take photos run
Todd play the piano eat sweet food
Mike play tennis watch movies
Annie read cook
2. a bowl of ice-cream _________________________________
It can’t be Todd’s. He doesn’t eat sweet food.
3. camera ____________________________________
4. cookbook ____________________________________
It must be Jessica’s. She likes taking photos.
It can’t be Annie’s. She doesn’t like cooking.
Let’s practice.
Name Likes Dislikes
Jessica take photos run
Todd play the piano eat sweet food
Mike play tennis watch movies
Annie read cook
5. tennis ball ____________________________________
It must be Mike’s. He likes playing tennis.
6. running shoes ______________________________________
They can’t be Jessica’s. She doesn’t like running.
Let’s discuss.
晚上八點多，突然聽到有敲門聲。請你根據下面的詞組提示，寫幾句話來猜測是誰在敲門，并寫出理由。
can’t be a parent, at home;
can’t be a thief, knock at the door;
Might / could be a neighbor,
want some help;
must be my aunt, like to…
…
…
單項選擇
A.
B.
C.
D.
— Who’s singing in the next room
— It ____ be Jane. She has gone to New York.
can’t
must
1.
shouldn’t
can
A
— Who’s singing in the next room
— It ____ be Jane. She has gone to New York.
2.
A.
B.
C.
D.
can’t
must
shouldn’t
can
A
A.
B.
C.
D.
3.The dictionary _______ be Sue’s. I saw her name on the front page of the dictionary.
would
must
could
may
B
單項選擇
A.
B.
C.
D.
— Listen! Is that Mr. Wang speaking in the room
— No. It _______ be Mr. Wang. He has gone to America.
may not
needn’t
4.
can’t
mustn’t
C
A.
C.
— Where’s Mary
— I’m not sure. She _______ in the laboratory.
might be
5.
must be
B.
D.
is might
must

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