人教版九年级下册 Unit8 It must belong to Carla. SectionA Grammar focus 4a-4c 课件(共35张PPT)

(共35张PPT)
Unit 8
It must belong to Carla.
Section A
Grammar Focus-4c
学习目标
1.学习掌握下列词汇：laboratory, coat, sleepy, pocket。
2. 掌握情态动词的用法和物体所属的句型:
Whose…is this
must be…
It might be…
can’t be…
laboratory
outdoors
coat
sleepy
n. 实验室
adv. 在户外；在野外
n. 外套；上衣
adj. 困倦的；瞌睡的
Words Review
It could be
__________.
It also might be
______________.
Can you guess what it is
three birds
a beautiful face
Can you guess what it is
It could be _________________.
It also might be ______________.
a white vase
two faces
It could be ______.
It also might be
___________.
Can you guess what it is
a dog
two girls
Could A be bigger than B
In fact, A and B must be
________________.
Which one is bigger, A or B
A
B
the same size
No.
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.
Grammar Focus
Grammar:
表示推测的情态动词有must, may, could, might, can。
1. ——这是谁的排球
—______ volleyball is this
——这一定是卡拉的。她热爱排球运动。
—It _____ _____Carla’s. She loves volleyball.
Whose
must be
Fill in the blanks.
合作探究
2. ——这是谁的发带？
— Whose____ ____ 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 might
_____ ____ Linda. They both have long hair.
could
hair band
belong to
3. ——那晚你看见了什么？
— _____ _____ 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 not sure, but it _____ ___ a dog.
It was bigger. I think it _____ ___ a bear or a wolf.
What did
can’t be
might be
可能性: must> can/could > may/ might
can not ( can’t)
could not (couldn’t)
may not / might not
否定
否定
精讲点拔
Grammar: 情态动词表推测
must表示可能性最大的______推测，意思是______。只能用于肯定句。如果要表示“一定不”，应该用can’t。如果询问可能性时，应该用can。
e.g. He ______ ______ the answers.
他肯定知道答案。
mustn’t 在英语中不能用于表示推测，但是可以表示“禁止，不允许”之意。
must
肯定
一定
must know
e.g. Don’t eat it. It ______ go bad. 不要吃它，可能坏了。
The plane ______ ______ put off by the storm.
这趟飞机可能会因为暴风雨而推迟。
He ______ ______ the answers. 他肯定不知道答案。
can/could
can /could用于表示某事有可能发生或可能是事实,意思是“会，可能”。can表示推测“可能性”时，一般用于否定句或疑问句。can’t表示______ 推测，意思是______。could可用于表示客气、礼貌、委婉的请求语气。
否定
一定不
could
could be
can’t know
may/might表示推测“可能性”时，意思是______。might不表示过去时态，语气更委婉，可能性更小。might表推测时，可用于否定句，但不用于疑问句。
e.g. He __________ ______ ______ at home, but I’m not sure.
may/might
可能
might/could not be
1. must/could/might/can’t do sth. 推测现在发生的动作。
e.g.他一定有一辆小汽车。
He ______ ______a car now.
2. must/could/might/can’t be doing sth. 推测正在发生的动作。
e.g. 他们一定不在图书馆读书。
They______ ______ reading in the library.
他一定在家做作业。
He ______ ______ ______ his homework at home.
推测时态
must have
can’t be
must be doing
3. must/could/might/can’t have done sth. 推测已经发生的动作。
e.g.他可能已完成了工作。
He ____________ ______ ________ the work.
4. must/could/might/can’t be done sth. 表示被动语态的推测。
e.g.我的书包不可能被偷。
My schoolbag ______ ______ ______.
could/might have finished
can’t be stolen
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.
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
4b
n. 外套
Complete the responses(答复）.
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 boring
adj. 困的
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.
4c
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.
1. — Excuse me. Is this the right way to the Tian an’men Square
— Sorry, I am not sure. It _____ be.
A. might B. will
C. must D. can
一、单选选择。
2. — Isn’t that Betty’s husband over there
— No, it _____ be him. I’m sure he doesn’t wear glasses.
A. can’t B. must not
C. won’t D. may not
3. You ____ be tired .You’ve only been working for two hours.
A. must not B. won’t
C. can’t D. may not
4. — Is Frank coming by bus
— He should, but he _____ not. He likes driving his car.
A. must B. can
C. need D. may
1. He must be an actor.(改为否定句)
He ______ be an actor.
2. Peter has a black T-shirt.(同义句）
(1)The black T-shirt ______ ______Peter .
(2) The black T-shirt ______ ______.
(3) ______ ______ ______ the black T-shirt is Peter.
3.I didn’t go out because of the heavy rain.（同义句）
I didn’t go out ______ it rained ______.
二、句型转换。
needn’t
belongs to
is Peter’s
The owner of
because heavily
Who’s singing in the next room
— It ____ be her. She has gone to New York.
A. can’t B. must
C. shouldn’t D. can
【解析】考查情态动词表推测。表示否定推测时，用can’t，意为“一定不……”。must表示推测时，意为“一定……”，用于肯定句；根据答语“她已经去了纽约”可知是否定推测，故选A。
41. —Whose T-shirt is this
—It ___ be John' s. It’s ___ small for him.
A. can't; much too
B. can't; too much
C. mustn't; much too
D. mustn't; too much
【解析】情态动词的用法。根据句意“它不可能是约翰的，对他来说太小了。”故排除C、D，too much为“太多”的意思，much too为“太”。故选A。
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
【解析】 needn’t (不必)表建议； must (一定)表猜测的可能性很大； might (可能，也许)表不是很肯定的猜测。 mustn't(不允许)表命令。句意：---这个月你们将去哪？---我们或许去厦门，但还不确定。
C
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
【解析】句意：--- 你已经决定到哪里过暑假了吗？--- 还没有呢，我们也许去青岛，那是个度假的好地方。情态动词表示推测时，may表“可能”，must表“一定”，can’t表“不可能”。
A
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
______ 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
Who’s singing in the garden
—It ______ be Mr. Brown. He always practices singing at this time.
A. must B. can’t C. need
I ______ follow you. Would you please repeat it
A. can’t B. mustn’t
C. needn’t D. shouldn’t
A
A