情态动词（can，could，must，may的用法）课件（共50张PPT）

(共50张PPT)
情态动词
目录
第一部分：情态动词是什么
第二部分：can\could\may\must
第三部分：应用练习和总结
Look
these
pictures,
tell
me
what
you
see.
目录
第一部分：情态动词是什么
第二部分：can\could\may\must
第三部分：应用练习和总结
Look
these
pictures,
tell
me
what
you
see.
He
can't
swim.
He
can
play
basketball.
You
mustn't
swim
in
the
river.
目录
第一部分：情态动词是什么
第二部分：can\could\may\must
第三部分：应用练习和总结
情态动词概念
1.本身有各种意义
2.不能单独作谓语，需要与动词原形构成谓语部分
3.表示说话人的语气和情态，人对这一动作或状态的看
法或主观设想
can
1.
能,会，指体力、知识、技能等方面的能力
Man
can
not
live
without
air.
She
can
swim.
can
2.
可以,请求和允许
Can
I
use
your
umbrella?
You
can
use
my
dictionary.
can
3.表猜测，可能。一种客观可能性
Learning
English
can
be
easy.
Can
the
news
be
ture?
猜猜情态动词can的含义
I
can
wash
dishes.
Jenny
can
be
excited.
He
can
play
basketball.
Can
I
help
you?
The
answer
can
be
right.
Can
I
borrow
your
pencil?
猜猜情态动词can的含义
I
can
wash
dishes.
能，会
Jenny
can
be
excited.
可能，表推测
He
can
play
basketball
well.
能，会
Can
I
help
you?
可以，表请求，允许
The
answer
can
be
right.
可能，表推测
Can
I
borrow
your
pencil?可以，表请求，允许
I
can
wash
dishes.
Jenny
can
be
excited.
He
can
play
basketball
well.
当主语发生变化的时候，can有变吗？
can后面的动词是什么形式呢？
葵花宝典：
看个性，谁最强？
can排第一没人抢
主语是谁，它不管
仍是原形，最开心
后面动词受影响
也是原形保个性
xx
can
....
I
can
wash
dishes.
Jenny
can
be
excited.
He
can
play
basketball
well.
“不会”“不能”怎么表达呢？
I
can
not
wash
dishes.
Jenny
can
not
be
excited.
He
can
not
play
basketball
well.
葵花宝典：
变否定，很容易，not跟在can后面
I
can
wash
dishes.
Jenny
can
be
excited.
He
can
play
basketball
well.
问某人会不会做某件事，怎么问？
I
can
wash
dishes.
Can
you
wash
dishes?
Jenny
can
be
excited.
Can
Jenny
be
excited?
He
can
play
basketball
well.
Can
he
play
basketball
well?
葵花宝典：
变疑问，不用怕
can到前面来领队
句末问号不要丢
遇I,we,要小心
变成you后再提问
解密特殊疑问句
特殊疑问句是以特殊疑问词开头，对肯定句里某一成分进行的提问。
结构：特殊疑问词+一般疑问句？
TIP:回答时不用YES\No回答，
而是用句子或是短语回答。
大胃王计时大赛
where
how
many
what
how
when
whose
why
who
which
how
much
how
long
特殊疑问词集合
what—什么—对事或物提问
when—什么时候—对时间提问
how—怎么样—对方式,方法等提问
how
many—多少—
对数量提问
how
much—多少钱—对价钱或多少提问
特殊疑问词集合
which—哪一个—选择
where—在哪里—对地点或位置提问
whose—谁的—
对物品所属提问
who—谁—对人提问
why—为什么—对原因提问，与because搭配
牛刀小试
牛刀小试
牛刀小试
My
mother
can
play
the
pipa
well.
否定句：
一般疑问句：
划线部分提问：
葵花宝典：
变疑问，不用怕
can到前面来领队
句末问号不要丢
遇I,we,要小心
变成you后再提问
遇my,our，同样变
变成your后再提问
could
1.can的过去时，能，会。过去的能力
She
could
draw
beautiful
pictures
when
she
was
ten.
could
2.
表示可以，比can委婉
Could
you
please
give
me
a
bottle
of
water?
猜猜情态动词could的含义
Could
you
do
me
a
favor?
Could
I
use
your
pen?
He
could
cook
when
he
was
alone.
猜猜情态动词could的含义
Could
you
do
me
a
favor?
可以，能
Could
I
use
your
pen?
可以，能
He
could
cook
when
he
was
alone.
会，过去的能力
1.must
肯定的猜测，译为“一定”
This
must
be
your
pen.
2.表示主观看法，意为必须
You
must
stay
at
home.
must
must
3.
mustn’t
表示禁止。
You
mustn’t
play
with
fire.
must
4.must
引导的疑问句，肯定回答为must。
否定为needn't
或don't
have
to.
Must
I
finish
the
homework?
肯定回答：Yes,
you
must.
否定回答：No,
you
needn't.
No,
you
don't
have
to.
-They___
be
doing
the
experiment
in
the
lab.
-Why？
-Because
the
lights
are
still
burning.
A.could
B.can
C.must
D.would
牛刀小试
-They___
be
doing
the
experiment
in
the
lab.
-Why？
-Because
the
lights
are
still
burning.
A.could
B.can
C.must
D.would
牛刀小试
You
____do
the
homework,
or
no
meat
for
you.
A
.must
B.
can
C
.will
D.
shall
牛刀小试
You
____do
the
homework,
or
no
meat
for
you.
A
.must
B.
can
C
.will
D.
shall
-Must
I
do
the
housework
today,
Mum?
-No,
you
__________
A
mustn’t
B
needn’t
-Must
I
do
the
housework
today,
Mum?
-No,
you
__________
A
mustn’t
B
needn’t
may
可以：表示请求，许可，比can正式
May
I
borrow
your
bike?
可能，表示猜测，可能性比can小。一般用在肯定句。
It
may
rain
tomorrow.
3.祝愿，希望。may+主+动词
May
you
get
good
grades.
(
1
)(
)
I
have
a
word
with
my
mother
?
A.
Will
B.
Would
C.
May
D.
Can
(
2
)
Two
eyes
(
)see
more
than
one.
　　A.
can
B.
may
C.
will
D.
should
　　
(
3
)
(
)
I
turn
on
the
radio?
You'd
better
not.
It
is
noisy
enough
in
this
room.
A.Shall
B.
Must
C.
Need
D.Do
(
1
)(
)
I
have
a
word
with
my
mother
?
A.
Will
B.
Would
C.
May
D.
Can
(
2
)
Two
eyes
(
)see
more
than
one.
　　A.
can
B.
may
C.
will
D.
should
　　
(
3
)
(
)
I
turn
on
the
radio?
You'd
better
not.
It
is
noisy
enough
in
this
room.
A.Shall
B.
Must
C.
Need
D.Do
(
4
)
-
Let's
go
dancing!
-Sorry,
I
(
)
.
I
have
to
go
to
my
guitar
lesson.
A.can't
B.
mustn't
C.
needn't
D.
shouldn't
(
5
)
Everyone
(
)do
his
best
to
make
the
world
safe
and
clean.
A.
can
B.
may
C.should
D.
had
to
(
6
)
(
)to
have
lunch
with
us
today?
A.
Do
you
like
B
Would
you
like
C.
Will
you
like
D.
Have
you
like
(
4
)
-
Let's
go
dancing!
-Sorry,
I
(
)
.
I
have
to
go
to
my
guitar
lesson.
A.can't
B.
mustn't
C.
needn't
D.
shouldn't
(
5
)
Everyone
(
)do
his
best
to
make
the
world
safe
and
clean.
A.
can
B.
may
C.should
D.
had
to
(
6
)
(
)to
have
lunch
with
us
today?
A.
Do
you
like
B
Would
you
like
C.
Will
you
like
D.
Have
you
like
(
1
)
她一定在教室里。
She
____
____
______
the
classroom.
(
2
)
你走可以，但是应该和妈妈大声招呼。
You
___
go,
but
you
____
____
goodbye
to
our
mother.
(
3
)
你能帮我把这个杯子写一下吗？
_____
you
_____
______
______
the
cup?
(
1
)
她一定在教室里。
She
____
____
______
the
classroom.
(
2
)
你走可以，但是应该和妈妈大声招呼。
You
___
go,
but
you
____
____
goodbye
to
our
mother.
(
3
)
你能帮我把这个杯子洗一下吗？
_____
you
_____
______
______
the
cup?
must
be
in
can
should
say
Could
help
me
wash
(
4
)
你会说汉语吗？
____
____
______
________?
(
5
)
看！那个高个子老师一定是我们的新老师。
Look!
That
tall
man
_____
_____
our
new
teacher.
(
6
)
我相信我能做到。
I
believe
_____
______
it.
(
4
)
你会说汉语吗？
____
____
______
________?
(
5
)
看！那个高个子老师一定是我们的新老师。
Look!
That
tall
man
_____
_____
our
new
teacher.
(
6
)
我相信我能做到。
I
believe
_____
______
it.
Can
you
speak
English
must
be
can
do
Summary