资源简介

(共23张PPT)
Unit 8
It must belong to Carla.
Section B 1a~1d
express
at the same time
circle
Britain
mystery
receive
Historian
leader
midsummer
medical
purpose
prevent
v. 表示；表达
同时；一起
n. 圆圈v. 圈出
(=Great Britain)大不列颠
n. 奥秘；神秘事物
v. 接待；接受；收到
n. 历史学家；史学工作者
n. 领导；领袖
n.仲夏；中夏
adj. 医疗的；医学的
n. 目的；目标
v. 阻止；阻挠
New words
laboratory
n. 实验室
outdoors
adv. 在户外；
在野外
coat
n. 外套；外衣
Can you say these
sleepy
adj. 困倦的；
瞌睡的
She could/might
be a/an_______.
nurse
Who’s he/she
He could/might
be a/an_______.
doctor
1.这是谁的排球？
is this
这一定是卡拉的。她热爱排球运动。
It be . She loves volleyball .
2.这是谁的发带？
is this
它可能是梅的发带。或者可能属于琳达。他们两人都是长发。
It be Mei's hair band . Or it belong to Linda.
They have long hair .
3.那晚你看到了什么？
did 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 , but it a dog .
It was bigger, I think it a bear or a wolf .
Whose volleyball
must
Carla’s
Whose hair band
could
might
both
What
not
sure
can’t
be
might
be
It must be very expensive.
The people who do it must be very fit.
That might be fun.
It may be too challenging for us.
It could be dangerous.
It can't be that dangerous to go onsafari. So many people do it.
Look at these sentences.
情态动词
表推测
Lead-in
情态动词must，can，could，may和might均可表示推测，可以对过去、现在或将来的情况作出语气强弱不同的推测。
语法重点: 情态动词表推测
表示可能、怀疑、允诺、愿望、义务、必要、猜测等的动词就是情态动词。情态动词可以表示说话人的语气或某种情态，也可以表示推测。
英语中表示推测的情态动词主要有 must, can, could, may, might, can’t等。
must ＞ can ＞ could ＞ may ＞ might ＞can’t
Match the main idea with each paragraph.
Para. 1
Para. 3
Something unusual is happening in our town.
The writer's opinion about the strange noises.
People's ideas about the strange noises.
Para. 2
Task 1
Task 2
1. What is the strange thing in the small town
__________________________________________________
There are some strange noises outside window.
Read the article and answer.
2. Who is worried about this thing Why
___________________________________________________
Everyone in the town. Because no one knows what it is.
3. What did Victor’s parents do about the strange thing
_________________________________________________
They called the policemen.
句式 情态动词 含义 用法
肯定句 must 一定 表示有把握的肯定推测。
may/ might/ could 也许; 可能 表示没有把握的肯定推测。
否定句 can’t/ couldn’t 不可能 表示有把握的否定推测。
may not/ might not 可能不 表示不太有把握的肯定推测。
疑问句 can/ could 可能 表示推测。
情态动词表示推测的意义和用法
情态动词表示推测可以分为以下几种情况:
★情态动词+ do 此结构表示对现在或将来情况的推测和判断
—Do you know where she is now
—I think she ______ ________in Beijing. 我认为她可能在北京旅游。
★情态动词+ be doing 此结构表示对现在或将来正在进行的情况的推测和判断。
At this moment, my father can’t be working in the office.
He ______ ______ ______ housework at home.他一定在家做家务劳动。
★情态动词+ have done 此结构表示对过去情况的推测和判断。
The road is wet. It ____________ _____ _____last night.昨天晚上可能下雨了
★情态动词+ have been doing此结构表示对过去正在进行的情况的推测和判断。 Your mother must have been looking for you at that moment.
探究二：情态动词表示推测的几种情况
must be doing
might travel
might/could have rained
Grammar Focus
Mary
Jack
Tom
It Mary's / Jack's.
It might/could belong to(属于) Mary / Jack.
Whose mobile phone is this
Step 2 Presentation
might/could be
Because they are both adults.
1b
Listen and match each person with a thing and a reason.
Person Thing Reason
Jane’s little brother volleyball J. K. Rowling is her favorite writer.
Mary toy truck She loves volleyball.
Carla magazine He was the only little kid at the picnic.
Deng Wen book She always listens to pop music.
Grace CD He loves rabbits.
listening
3. A: That’s the phone.
B: Hmm. I wonder who 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.
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
can’t be
must be
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 ______________.
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 colder/ cold outside
having a sore throat / ill
n. 外套
must be delicious
be that boring
adj. 困倦的
4b
Talk about the order with your partner.
I don’t agree. I think Picture A must come first. …
I think Picture B might come first because the man in Picture C is running, and in Picture B, we can see an alien is running after him.
Pre-listening
a
b
c
Listen and number the pictures [1–3] in 1a. Then write two or three sentences to finish the story.
1
2
3
While-listening
1b
加音频 Section B 1b
______________________________________________________
______________________________________________________
______________________________________________________
A woman is filming with a camera.
They are making a movie.
...
While-listening
1b
Listen and number the pictures [1–3] in 1a. Then write two or three sentences to finish the story.
Listen again. Complete the sentences.
They see … The man says … The woman says …
1. a man running he might be ____________ he could be ______________
2. something in the sky it could be __________ it must be _______________
3. something strange it must be ___________ I must be ________________
4. a woman with a camera she could be ____________ they must be _____________
late for work
running for exercise
a plane
a UFO
an alien
dreaming
from the TV news
making a movie
While-listening
1c
加音频 Section B 1c
Read Para. 4 carefully and answer questions.
1. How old is Stonehenge believed to be
It must be 5,000 years old.
2. Was Stonehenge built overnight
No, it was built for a long period time.
3. What’s the biggest mystery of Stonehenge Why
One of the biggest mystery is how it was built. Because the stones are so big and high.
4. Was the volunteers successful in building another Stonehenge
No, they failed to build another Stonehenge.
5. What are we sure of the builder of Stonehenge
They must have been hard-working and great planners.
Read Para 4 and fill in the blanks.
Historians are not sure about
_______________.
_______________.
_______________.
how it was built
who built it
what it was used for
We are not sure about who built it;
however, we do know they must have been hard-working — and great planners!
Tips: 用however来表达不同之处；用and来添加信息。
Careful reading
辨认链接观点的连词或短语，能帮助你更好地理解文本。
not only...but also
as
however
so
▲Who built it
▲When was it built
▲How was it built
They are mysteries about Stonehengeh
giving reasons

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