-
初中英语情态动词的基本用法讲解
1.
can
1
）表示能力，能够，会
Two
eyes can see more than one.
两只眼比一只眼看得清。
I can
swim
我会游泳
2
）表示可能
Jim went to
Beijing ,so he can
’
t be at
home.
He can
’
t
have enough money for a new
car.
他不可能有足够的钱买新车。
3
）表示允许。
可以
Can I have a look at your
new pen?
我可以看一看你的新钢笔吗？
回答：
Yes ,of course/Yes you
can. No,you can
’
t
4
）比较委婉客气地提出问题或陈述看法。
Can you lend me a hand?
帮我一把好吗？
的过去式，能，会
I
______swim when I was three years old.
2.
情态动词，
--
可以比
can
客气，委婉
Could you help me?----
Yes,of
course/sorry,I can
’
t.I am
busy.
3. May
1
）表允许，可以，比
can
,could
更客气委婉
You
may take whatever you like.
你喜欢什么就拿什么。
He
told me that I might smoke in the room.
他告诉我可以在房间里抽烟。
May
(Might) I ask for a photo of your baby?
我可以要一张你宝宝的照片吗？
在回
答以
may
引起的问句时，多避免用这个词，而用其它方式，如
Yes, please. / Certainly.
/ Please don
’
t ./
You
’
d better not. / No, you
mustn
’
t.
等，以免显得太严峻
或不客气。
2
）表可能（事实上）<
/p>
。可以指过去时间，也可以指现在时间，但语气更加不肯定。
He may be at home.
他可能在家。
She may
not know about it.
她可能不知道这件事。
They
might be having a meeting, but
I
’
m not sure.
他们有可能在开会，不过我不肯定。
3. must
1
< br>）表示义务。意为“必须”
（主观意志）
。
Mustn
’
t
不准
We must do
everything step by step.
我们一切都必须循序渐进地做。
You mustn
’
t talk
to her like that.
你不可能那样对她说话。
--Must we hand in our
exercise
—
books now?
我们现在就要交练习本吗？
--No, you
needn
’
t. / No, you
don
’
t have to.
不必
。
（这种情况下，一般不用
mustn
’
t
）
2<
/p>
）表示揣测。意为“想必、准是、一定”等，只用于肯定句。
He must be ill. He looks so pale.
他准是病了。他的脸色苍白。
She
’
s wearing a
diamond necklace. She must have a lot of money.
她戴着钻石项链，一定很有
钱。
1. -Mum
，
may I watch TV now
？
-Sure
，
but you
________ help me with my English.
A. can
B. may
C. must
D. could
2. -________ I
download the article again
？
-No
，
you needn't.
A. Shall
B. Will
C. Must
D. Can
3. -Can you go skating with us this
afternoon
？
-Sorry
，
I can't. I ________ take care of my
little sister at home.
A. can
B. may
C. would
D. have to
4. -Must I hand in my exercise book
today
？
-No
，
you ________.
A. can't B.
needn't
C.
mustn't
D. won't
5. -May
I have a word with you
？
-No
，
you ________. I'm busy today.
A. needn't B. wouldn't
C. don't have toD. can't
6.
-________I have your English
name
，
please
？
-Yes
，
Helen. H-E-L-E-N.
A. Must
B. May
C. Will
D.
Need
7. -Who is the boy over
there
？
Is it John
？
-No
，
it ________ be him. John is much
taller.
A. mustn't B. may not
C. can't
D. needn't
8.
-Can you play Frisbee
，
Jay
？
-Yes
，
I ________. It's easy.
A. must
B. can
C. need
D. may
9.-You
must come back every month.
-Yes
，
I ________.
A. will
B. must
C. should
D. can
10. She ________ know
the answer
，
but
I'm not sure.
A. maybe B. may be
C.
may
D. must
11. - Must we clean the room right
now
？
- No
，
you____. You _____clean it after lunch.
A. needn't
；
may
B.
needn't;must C. Mustn't
；
can
D.
mustn't
；
may
12.
John________ come to see us
tonight
，
but he
isn't very sure yet.
A. may
B.
can
C.
has to
D. must
13. Children ________ play with fire.
A. mustn't B. can't
C.
shouldn't
D. needn't
14. -________ I come
in
，
Mr
Green
？
-Yes,come in
，
please.
A. Must
B.
Need
C. Will
D. May
15. -Must
I finish the work today
？
-No
，
you ________. You ________ finish it
tomorrow.
A.
mustn't
；
may
B.
can't
；
can
C.
needn't
；
may
D. needn't
；
must
1
(
) 1 John___ come to see us tonight, but
he isn't very sure yet.
A. may B. can
C. has to D. must
(
) 2 They ___ do
well in the exam.
A. can be able to B. be able to
C. can able to
D. are able to
(
) 3 -May I take
this book out?
-No, you___.
A.
can't B. may not C. needn't D. aren't
(
) 4
You___ go and see a doctor at once because you're
got a fever.
A. can B. must C. dare D. would
(
) 5 -Can you speak Japanese?
-No, I____.
A. mustn't B. can't C. needn't D. may
not
2(
) 1
-He___ be in the classroom, I think.
-No, he ___ be in the classroom. I saw
him go home a minute ago.
A. can; may not
B. must; may not C. may; can't D. may; mustn't
(
) 2 -Shall I
get one more cake for you, Dad?-Thanks, but
you___, I've had enough.