【单元整体教学】Unit 8语法（课件）2024秋新人教九上

(共16张PPT)
Unit8
It must belong to Carla.
Grammar
Let’s play a guessing game
Where is Ms.Xie
can’t be …
might be …
could be …
must be …
She
because...
Let’s play a guessing game
What could she be doing
can’t be doing...
might be doing…
could be doing…
must be doing…
She
because...
Let’s play a guessing game
Where is Ms.Liu
can’t be …
might be …
could be …
must be …
She
because...
Let’s play a guessing game
What could she be doing
can’t be doing...
might be doing…
could be doing…
must be doing…
She
because...
Let’s play a guessing game
What could he have done before
He might/could have seen something terrible.
He might/could have heard surprising news.
He might/could have done...
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
Let’s learn
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.
情态动词 + 动词原形（此时动词原形通常为be）:
表示对 _______ 事情的推测。
现在
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.
情态动词 + be + 动词-ing：
表示对 ____________ 事情的推测。
正在发生
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.
情态动词+ have +动词的过去分词：表示对 ____________ 事情的推测。
过去发生
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).
could be
Let’s practice
Choose the best word(s) in brackets to complete each sentence.
4a
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.
can’t be
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 lying in bed all day.
B: She might be ____________________.
getting cold(er) outside
ill / having a headache
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
3. camera ____________________________________
2. a bowl of ice-cream _________________________________
1. DVD ________________________________________
4. cookbook ____________________________________
5. tennis ball ____________________________________
6. running shoes ______________________________________
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
It can’t be Mike’s. He doesn’t like watching movies.
It can’t be Todd’s. He doesn’t eat sweet food.
It must be Jessica’s. She likes taking photos.
It can’t be Annie’s. She doesn’t like cooking.
It must be Mike’s. He likes playing tennis.
They can’t be Jessica’s. She doesn’t like running.
THANK YOU