内容正文:
Unit 8
It must belong to Carla.
Section A(Grammar Focus-4c)
初中英语人教版九年级全一册
1
在语境中理解、识记并运用本课时词汇:laboratory, coat, sleepy…
掌握情态动词must, could, might, can’t表示推测的不同用法,独立完成相关练习。
3. 能够根据相关信息,正确使用must, might, could, can’t等
词汇进行预测和推断。
学习目标
Watch and make inferences.
What do you think the girl might be, a student or an office worker?
Why do you think she is riding a bike so fast?
Do you think she will be late?
Let’s make some inferences.
Watch and make inferences.
Whose notebook it might be?
Is it a boy or a girl?
What personality might the owner have?
Let’s make some inferences.
Fill in the blanks.
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
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
Fill in the blanks.
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: ________ > ________ > _________
情态动词表推测 可能性大小顺序
may not / might not
can/could
may/ might
否定可能性: ________ > ________
must
can not ( can’t)
could not (couldn’t)
可能性: > >
may not / might not
can/could
may/ might
否定可能性: >
must
can not ( can’t)
could not (couldn’t)
情态动词表推测 可能性大小顺序
must表示可能性最大的肯定推测,意思是一定。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. 1. He ______ ______ the answers.
他肯定知道答案。
2. He ______ _______ the answer.
他肯定不知道答案
3. ______ he ______ the answer?
他知道答案吗?
must know
can’t know
Can know
must
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。
e.g. 1. You _________ _______ football in the street. It's too dangerous.
你不可以在街上踢足球,太危险了。
2. You _________ ________ here.
在这里你不许抽烟.
mustn’t play
mustn’t smoke
mustn’t
can/could
e.g.
1. Don’t eat it. It ______ go bad. 不要吃它,可能坏了。
2. The plane ______ ______ put off by the storm.
这趟飞机可能会因为暴风雨而推迟。
3. He ______ ______ the answers. 他肯定不知道答案。
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表示否定推测,意思是一定不。could可用于表示客气、礼貌、委婉的请求语气。
could
could be
can’t know
may/might
may/might表示推测“可能性”时,意思是可能。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.
might/could not be
情态动词表推测 推测时态
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.
must have
can’t be
must be doing
情态动词表推测 推测时态
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
Choose the best way to complete each sentence using the words in brackets.
4a
1. A: Where’s Jean?
B: I’m not sure. She ________ (is/ might be/ must be) in the laboratory.
might be
2. A: Everyone is going to the pool after school.
B: Really? It _______ (must be / can’t be /could be ) hot outdoors.
must be
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 these are Jim’s glasses.
B: They _______ (can’t be / might be / could be) his. He doesn’t
wear glasses.
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/ must be
Choose the best way to complete each sentence using the words in brackets.
Complete these responses.
4b
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
Complete these responses.
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 interesting
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.
Make inferences about the owner of the room and his / her hobbies, you have to talk about the reasons why you think so.
Exercises
1. —Who’s singing in the next room? Is it Mary?
—No,it _____ be her. She has gone to New York.
A. can’t B. must C. shouldn’t D. can
2.(宜昌中考)—Difficulties always go with me!
—Cheer up! If God closes a door in front of you, there ______ be a
window opened for you.
A. would B. must C. could D. can
A
B
Exercises
3.Look at the boy playing basketball on the ground.
Is it George?
—It ____ be him. He told me he would play basketball after class,
but he’s not sure.
A. mustn’t B. must C. can’t D. may
4. —Do you have any plans for this weekend?
—I’m not sure. I _____ go climbing Mount Yuntai.
A. must B. need C. may D. can
D
C
Exercises
5.—I went to Mount Wudang with my five friends in one
small car last weekend.
—Oh, my God! I think it ______ be an uncomfortable trip.
A. must B. can’t C. may D. shouldn’t
6.The work is too hard for him. He ____ finish it on time.
A. can’t B. mustn’t C. shouldn’t D. needn’t
A
A
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