人教版七年级英语下册Unit 1 Can you play the guitar? SectionA 3a-3c情态动词Can的用法课件（20张PPTWPS打开）

(共20张PPT)
Unit
1
Section
A
Grammar
foucus
3a-3c
情态动词
can/could
用法：
1.表示能力
2.表示许可、请求、允许
3.表示可能性
1.表示能力
Can
you
speak
English?
I
can
swimming.
can/could
能
Can
you
speak
English?
Yes,
I
can.
Can
you
swimming?
No,
I
can’t.
I
couldn’t
play
violin
then.
否定形式：
can’t=can
not
couldn’t=could
not
不能
2.表示许可、请求、允许
表示许可、请求、允许时，could比can语气更加委婉。
且could只用于疑问句中。
When
I
lived
at
home,
I
could
watch
TV
whenever
I
wanted
to.
我住在家里时，想什么时候看电视，就什么时候看电视。
can/could
可以
Can/could
I
come
in?
我可以进来吗？
Yes,
of
course
you
can.
当然可以。
Note:
在回答问题时一般不用情态动词的过去式，因为情态动词的过去式表示“不确定，没把握”，因此此处回答一般不用
“Yes,
you
could.”
3.表示可能性
It
can’t
be
true.
那不可能是真的。
He
said
the
news
could
be
true.
他说这则新闻可能是真的。
can/could
可能
It
can’t
be
ture.
The
work
can
be
finished
this
season.
We
could
go
to
Guilin
this
summer.
表示推测时，can一般用于否定句，表示很有把握的否定测试；用于肯定句时则表示理论上的可能性或一时的情况。
could可以用于各种句式，表示可能性较大的推测。
情态动词
其他的
情态动词还有：
may
must
have
to
相关习题：
--Lily,_____you
finish
the
letter
in
ten
minutes?
--Yes,
I
can.
A.
must
B.should
C.need
D.can
解析：must
必须；should
应该；need
需要；can
能，可以
根据句意，也根据回答也可以推断出，用can。
答案：D
--The
beautiful
lady
with
glasses
over
there
looks
like
our
English
teacher.
--It____be
her.
She
has
gone
abroad.
A.can’t
B.may
not
C.mustn’t
D.needn’t
解析：can’t一定不是，表示否定推测。
may
not
可能不；mustn’t
禁止；needn’t
不需要。根据句意得出答案。
答案：A
Can
Wu
Jun
speak
English?
No,
he
can’t,
but
he
can
speak
Chinese.
UNIT
1
SECTION
A
CAN
YOU
PLAY
THE
GUITAR?
吴军会说英语吗？不,他不会，但是他能说中文。
Can
Mike
play
basketball?
No,
he
can’t,
but
he
can
play
tennis.
UNIT
1
SECTION
A
CAN
YOU
PLAY
THE
GUITAR?
迈克会打篮球吗？不,他不会，但是他能打乒乓球。
Can
Jane
and
Jill
dance?
No,
they
can’t,
but
they
can
sing.
UNIT
1
SECTION
A
CAN
YOU
PLAY
THE
GUITAR?
简和吉尔会跳舞吗？不,他们不会。但是他们会唱歌。
Grace/play
coccer/play
volleyball
Bill/write
stories/tell
stories
说一说：
Can
Grace
play
soccer?
No,
he
can’t,
but
he
can
play
volleyball.
Can
Bill
write
stories?
No,
he
can’t,
but
he
can
tell
stories.
说一说：
Complete
the
poster
with
the
words
in
the
box.
Students
Wanted
for
School
Show
We
want
students
for
the
school
show.
Can
you____or_____?
Can
you_____the
guitar?
Can
you_____stories?
Please
talk
to
Mr.Zhang
after
school.
play
sing
tell
dance
选词填空
Students
Wanted
for
School
Show
We
want
students
for
the
school
show.
Can
you
sing
or
dance?
Can
you
play
the
guitar?
Can
you
tell
stories?
Please
talk
to
Mr.Zhang
after
school.
Unit
1
Section
A
What
can
you
do?
I
can
play
the
guitar.
What
can
you
do,
Li
Xin?
I
can
do
Kung
fu.
-
Unit
1
Section
a
3a-3c
Thank
you
for
watching!
-End-
-
Unit
1
CAN
YOU
PLAY
THE
GUITAR?
Section
a
3a-3c