Download 高三英语情态动词

Revision for
Modal Verbs
Teacher: Hu YiLei
School: Jinling Middle School
Students: Class One, Senior Three
Revision on
Basis Uses of Common Modals
CAN
may
MUST
COULD
need
SHOULD
MIGHT
Complete the tips with
“can, may, must, should ,need”

Flu, Don’t worry
may catch a cold in the
Many people_____
spring or the fall. There are some ways
to prevent it:

1. Cover your nose and mouth with a tissue
when you cough or sneeze. You _______
mustn’t
throw the tissue everywhere after you use it.
And clean your hands afterward, noticing
may
that viruses________
remain infectious(传染
性) for hours.

2. Wash your hands often with soap and
warm water, especially after you cough
or sneeze. Alcohol-based gel hand
can
cleaners ________
inactivate(减除…活性)
viruses.

3. Avoid touching your eyes, nose or mouth.
Germs ______spread
this way and consider
may
buying a mask in case you ________it
in the
need
future.

4. At home, you ________
should usually clean
your room. keeping house air
can
circulation_______
reduce the spread of
virus.

5. By eating food rich in vitamin C to
improve your natural immunity(免疫力).
must take vitamin C pills, please
* if you _____
ensure tablets containing zinc (锌) to
promote(促进)absorption of vitamin C.

6. Those who show physical discomfort, the
symptom of high fever, cough _____
must stay in
the home, and at least 1 meter with others
maintain, seek medical advice immediately.

Put these tips into practice and
you_________
may not be infected with the
terrible flu!
Meaning
Structure
肯定是…
must be
可能是…
may be
不可能是…
can’t be
‘
It can’t be…
ItItmay
be…
is a hat.
It must be…
It can’t be…
It may be…
It is a mobile
phone.
It must be…
The person
can’t be…
The person
may be…
The person
must be…
Meaning
Structure
肯定（正在）…
must be doing
可能（正在）…
may be doing
不可能（正在）…
can’t be doing
‘
What is she doing?
1
She can’t be doing…
She may/must be doing…
What is she doing?
2
She can’t be doing…
She may/must be doing…
What is she doing?
3
She can’t be doing…
She may/must be doing…
A cat may have walked on the paper.
A small dog must have done this.
An elephant can’t have made these marks.
Meaning
Structure
（过去）肯定…
must have done
（过去）可能…
may have done
（过去）不可能…
can’t have done
‘
Structure
Meaning 对现在正在进行
对
?
表
的动作表猜测
猜测
对过去已经发生
对
?
表
的动作表猜测
猜测
肯定…
must be doing
must have done
可能…
may be doing
may have done
‘
不可能… can’t be doing
can’t have done
A:where’s Peter?
may be
B: I don’t know. He_______in
the teachers’
office.
can’t be
A: He_______there,
for I was there just now.
C: I know where he is. He is ill and
_____________ the doctor now.
must be seeing

A: What’s the matter with him?

C: He had a sore throat and coughed with
high fever .

must have caught
A: He _______________a
bad cold.
B: Really? He is not himself all these
days. I’m afraid that he______________with
may be infected
H1N1.

A: Oh, he shouldn’t
________________
have gone travelling
outside last weekend, or he wouldn’t
have got ill. These days , everyone
may be talking
____________(talk)
about this virus.
 C: But we ___________
too nervous. It
needn’t be
can’t be
________that
bad, for we have done our
best to prevent it from spreading.
 B: Hope so. How I wish he
_________________
could/would/might recover soon.

Homework
Finish the exercise paper after
you review what you have learned
in the class.
Revision for
Modal Verbs