Unit 8 It must belong to Carla Section A Grammar Focus-4c 课件(共22张PPT) 人教版英语九年级全册

(共22张PPT)
Unit 8
It must belong to Carla.
Section A (GF-4c)
Learning goals
1. Words: noise, policeman, wolf, laboratory, coat, sleepy
4. Sentences：① Whose volleyball is this
② It must be Carla’s. She loves volleyball.
③ It could be Mei’s hair band. Or it might belong to Linda.
3. Grammar：must, might, could and can’t for making references
2. Useful expression：There must be +主语+ doing sth.
Whose volleyball is this It ____ ____ Carla's. She loves volleyball.
Whose hair band is this It ____ ____Mei's hair band. Or it might________ ____Linda. They both have long hair.
What did you see that night I'm not sure, but it _____ ____ a dog. It was bigger. I think it
_____ ____a bear or a wolf.
could be
must be
belong to
can't be
might be
情态动词表推测
Grammar Focus
方框里的词都是______动词，
其作用是_______________
思考表推测的情态动词的区别：
语法探究之一
观察 思考 回答
情态
表示推测
肯定推测：
must ：表一定，表示把握大的肯定推测
may/ might/ could : 表也许，可能，表示没有把握的肯定推测
can’t/ couldn’t ：不可能 ，表示有把握的否定推测。
语法探究之二
观察 思考 回答
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
情态动词表推测
情态动词（Modal verbs）本身有一定的词义，但语义不完整，须与动词原形连用构成谓语；表示说话人对这一动作或状态的看法或主观设想。
情态动词________________________________
均可表示推测，它们可以对过去、现在或将来的情况作出语气强弱不同的推测。
must，can，could，may和might
确定的推测 含义 不确定的推测(可能性依次减弱) 含义
肯定句 一定；必定 可能
否定句 不可能 可能不
can和could也可以用于疑问句中表示推测。
must
can＞could＞
may＞might
may not＞
might not
can’t＞
couldn’t
must表推测时不用否定形式，如果用否定，
mustn’t 表示“禁止；不许”，而不表示推测。
情态动词表推测
主要有must, can /could, may /might等。
肯定推测：
must, can / could, may / might都可以表示肯定推测。must 表示把握性极强的推测，意为“肯定、一定”；can / could和 may / might表示把握性不大的推测，意为“也许、可能”。
否定推测：
can’t 意为“不可能”，表示很有把握的否定推测，may not意为“可能不”，表示把握性不太大的否定推测。
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。
1. That ______ be Lucy. She has gone to Beijing on business.
2. There _________ be something wrong with my watch. It isn’t working now.
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.
Finish the exercises 4a&4b. (完成书上4a/4b 的练习。)
should, must, can’t, may not, mustn’t
can’t
must
may not
mustn’t
should
Choose the best way to complete each sentence using the words in brackets.
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
n. 实验室
adv. 在户外；在野外
Grammar
4a
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 ______________________________.
ill/having a sore throat
getting colder/ cold outside
wear coats穿外套
have/has been doing sth.现在完成进行时,“一直做......”
Grammar
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
feel sleepy感觉瞌睡的
asleep adj.睡着的
“每当”引导时间状语从句
try to do sth.尽力做某事
Grammar
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.
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.
Grammar
4c
语法小知识——情态动词表推测
表推测的意义和用法：
句式 情态动词 用法 意义 例句
肯定句 must 表示有把握的肯定推测 一定； 肯定 Miller must be very tired after a long journey.
could/may/ might 其肯定程度逐渐减弱，表示把握不大的推测 可能
It might rain this afternoon.
否定句 can’t 表示有把握的否定推测 不可能 Amy can’t be at school. It’s Sunday today.
疑问句 can/ could 表示推测 可能 Can Peter still be alive after so many years
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.
3. That sweater _____ be Carla’s. She’s the only one who wears such colorful clothes.
4. Tony ______ want to go to the concert. He likes music, but I’m not sure if he likes rock music.
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.
must
might
can’t
might
1 Fill in the blanks with must, might, or can't.
can’t
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.
1.— 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; m
2.— ______ I know by what time you want the
project to be done
—By the day after tomorrow. ______ you finish it on time
A. May; Can B. Must; Need
C. Could; Must D. Need; Would
C
A
Exercises
直击中考
3.—Who’s singing in the garden
—It ______ be Mr. Brown. He always practices singing
at this time.
A. must B. can’t C. need
4.I ______ follow you. Would you please repeat it
A. can’t B. mustn’t
C. needn’t D. shouldn’t
A
A
Exercises
直击中考
5 -- Do you have any plans for this Sunday
-- I'm not sure. I _______ go to the countryside to
see my grandmother.
A. can B. must C. may D. need
6 -- Do you have any plans for this summer vacation
-- I’m not sure. I _______ take a trip to Taiwan.
A. must B. need C. may D. should
C
C
Exercises
直击中考
Exercise
根据句意及首字母或汉语提示完成句子
1. You’d better put on your c_________. It’s cold outside.
2. The baby is s__________. Take him to the bed.
3. W__________ pencil is this Is it yours
4. Many young people like ___________(戴)sunglasses in summer.
5. We can do many experiments in our school ___________ (实验室).
oat
leepy
hose
wearing
laboratory
Exercise
根据汉语意思完成句子
1. 她不可能在等你。
She _________________ for you.
2. 这件红色的T恤衫可能属于王梅。
This red T-shirt ______________________Wang Mei.
3. 他喜欢读书。现在他一定正在图书馆里读书。
He likes reading. Now he ________________ in the library.
4. 你走了那么长的路一定饿了。
You _________________ after your long walk.
5. 站在门口的那个人不可能是李老师。他已经去上海了。
The man who is standing at the door __________ __________Mr. Li. He has gone to Shanghai.
can’t be waiting
might/could belong to
must be reading
must be hungry
can’t be