(共31张PPT)
人教新目标版
七年级下
Unit
4
Don’t
eat
in
class.
Section
A(2d-3c)
语法：【祈使句】
Let's
watch
a
video.
Warming-up
打架
在外面
走廊，过道
听音乐
hallway
arrive
late
for
class
dining
hall
在教室里
outside
上课迟到
戴帽子
在音乐教室
在课堂上
on
time
食堂
Revision
School
Rules
Don’t
eat
in
the
classroom.
Don’t
run
in
the
hallways.
Don’t
arrive/be
late
for
class.
Don’t
fight.
Don’t
listen
to
music
in
class.
Revision
Revision
No,we
can't.We
can't...
Can
we…
Choose
and
make
up
new
sentences.
We
must...
But
we
can...
Lead-in
John
Alice
It’s
his
first
day
at
school.
When
you
go
to
a
new
school,
you
must
know
about
the
school
rules.
He
wears
the
school
uniform(校服).
Task1
Listen
and
fill
in
the
blanks.
John:
Hi,
my
name’s
John.
It’s
my
________
at
school.
Alice:
Hi,
John.
I’m
Alice.
This
is
a
great
school,
but
_______________
rules.
John:
Really
_________
some
of
the
rules
Alice:
Well,
______________
class.
This
is
very
important.
John:
OK,
so
we
______________.
______
we
bring
music
players
to
school
Alice:
No,
we
_______.
And
we
always
______
wear
the
school
uniform.
John:
I
see.
Alice:
Oh,
and
we
also
________
be
quiet
in
the
library.
first
day
there
are
a
lot
of
What
are
don’t
be
late
for
must
be
on
time
can’t
have
to
have
to
Can
Task2
Read
and
answer
the
following
questions.
1.
How
many
rules
does
Alice
mention
______________
2.
Is
John
new
at
school
___________
3.
Are
there
many
rules
at
school
______________
4.
Can
he
bring
music
players
to
school
_______________
5.
Do
they
have
to
always
wear
the
school
uniform
_______________
Four
rules.
Yes,
he
is.
Yes,
there
are.
No,
he
can’t.
Yes,
they
do.
Task3
Read
again
and
complete
the
chart.
What
are
some
of
the
rules
Dos
Don’ts
Wear
the
school
uniform.
Be
quiet
in
the
library.
Don’t
be
late
for
school.
Don’t
bring
music
players
to
school.
Make
sentences:We
must...
We
can't...
John:
Hi,
my
name’s
John.
It’s
my
first
day
at
school.
Alice:
Hi,
John.
I’m
Alice.
This
is
a
great
school,
but
there
are
a
lot
of
rules.
John:
Really
What
are
some
of
the
rules
Alice:
Well,
don’t
be
late
for
the
class.
This
is
very
important.
John:
OK,
so
we
must
be
on
time.
Can
we
bring
music
players
to
school
Alice:
No,
we
can’t.
And
we
always
have
to
wear
the
school
uniform.
John:
I
see.
Alice:
Oh,
and
we
also
have
to
be
quiet
in
the
library.
Listen
and
repeat.
Task4
have
to不得不
带来
Can
we
bring
music
players
to
school
bring
意为“带来”。
bring:
从别处拿/带某物到说话者所在的地方
take:
从说话者所在的地方拿/
带某物到别处
“bring”和“take”两个词都与某物的运动有关，但“bring”意味着随身携带来某物，而“take”则意味着带走某物。
例如：
把你的iPad拿这里来。
______________________________
把它拿到厨房去。
______________________________
Bring
your
iPad
here.
Take
it
to
the
kitchen.
And
we
always
have
to
wear
the
school
uniform.
…and
we
also
have
to
be
quiet
in
the
library.
情态动词have to 的用法:“必须、不得不”.
have
to表“必须”时与must意义接近，有时可与must互换，但have
to所表示的“必须”更侧重于客观需要。
情态动词must通常表示说话人的主观看法，“必须”。无人称和数的变化
，不能单独使用，必须与其后的动词原形构成谓语。
其否定形式为mustn't，“不准；禁止”。
例如：
我不得不在家照顾我弟弟。
______________________________
孩子们必须6点前回来。
______________________________
I
have
to
look
after
my
brother
at
home.
The
children
must
be
back
before
6
o’clock.
have
to可用在不同时态中，有人称和数的变化。
结构:1.肯定形式：主语＋
have to
＋动词原形＋其他
has
to(一般现在时,
单三式)
2.否定形式:“不必”主语＋
don't have to＋动词原形＋其他
doesn't
have
to(一般现在时，单三式)
3.疑问句:
Do (Does)
＋主语＋have to ＋动词原形＋其他
例如：
尼克不必穿制服。
______________________________
-周末你必须呆在家里吗
-是的,
我必须。/不,
我不必。
______________________________
Nick doesn’t have to wear a uniform.
--Do you have to stay at home on weekends
--Yes, I do. / No, I don’t.
Fill
in
the
blanks
according
to
the
conversation.
Task5
John
and
Alice
are
talking
about
their
school
rules.
Firstly,
they
_______
be
late
for
class.
They
must
be
_________.
Secondly,
they
____
bring
music
players
to
school.
And
they
always
_________
wear
the
school
uniform.
Also,
they
_______
be
quiet
in
the
library.
can’t
on
time
can’t
have
to
have
to
50
40
60
30
20
10
Read
the
conversation
loudly.Then
role
play
in
pairs.
Task6
John:
Hi,
my
....
It’s
my...
Alice:
Hi,
....
I’m
...
This
is
...
but
there
....
John:
Really
What
...
Alice:
Well,
don’t
....
This
....
John:
OK,
so
....
Can
...
Alice:
No,
....
And
we....
John:
I
see.
Alice:
Oh,
and
....
Practice
1.
不要在楼道里跑。
_______________________
2.
不要打架。
_______________
3.
有什么规矩？
__________________________
4.
我们必须按时上课。__________________________
5.
我们可以在教室里吃东西吗？
______________________
6.
不能。但我们可以在餐厅里吃东西。
______________________________
______________________________
Don’t
fight.
Don’t
run
in
the
hallways.
What
are
the
rules
We
must
be
on
time
for
class.
Can
we
eat
in
the
classroom
No,
we
can’t,
but
we
can
eat
in
the
dining
hall.
7.
我们可以在上课的时候带帽子吗？
___________________________
8.
他在学校里必须穿校服吗？
_________________________________
9.
是的，必须。/
不，不必。
_______________________________
10.
你们必须做什么？
_______________________________
11.
在图书馆里我们必须保持安静。
________________________________
Can
we
wear
a
hat
in
class
Yes,
he
does.
/
No,
he
doesn’t.
Does
he
have
to
wear
a
uniform
at
school
What
do
you
have
to
do
We
have
to
be
quiet
in
the
library.
祈使句定义
用于表达命令、请求、劝告、警告、禁止等的句子叫做祈使句。祈使句最常用于表达命令。祈使句因对象(即主语)是第二人称，所以通常都省略主语。祈使句的开头动词都为原形，句末则使用句号或叹号。
eg：Go
and
wash
your
hands.去洗你的手。(命令)
Be
quiet，please.请安静。(请求)
Be
kind
to
your
sisters.对妹妹要和善。(劝告)
Look
out!
Danger！小心！危险！(警告)
Keep
off
the
grass.勿践踏草坪。(禁止)
祈使句的肯定形式
Do型
动词原形(＋宾语)＋其他成分
Please
have
a
seat
here.
请这边坐。
Be型
Be＋表语(名词或形容词)＋其他成分
Be
a
good
boy！
要做一个好孩子！
Let型
Let＋宾语＋动词原形＋其他成分
Let
me
help
you.
让我来帮你。
注意：
有时可在祈使句的句首或句尾加上please，使语气显得客气、有礼貌。如果在句尾加please，应该用逗号与前句隔开。
e.g.
Go
this
way,
please.
请这边走。
祈使句的否定形式
①Do型和Be型的否定式都是在句首加Don't。
eg:
Don't
forget
me！不要忘记我！
Don't
be
late
for
school！上学不要迟到！
②Let型的否定式有两种：“Don't＋let＋宾语＋
动词原形＋其他成分”和“Let＋宾语＋not＋动词原形＋其他成分”。
eg:
Don't
let
him
go./Let
him
not
go.别让他走。
③有些可用no开头，用来表示禁止性的祈使句。“No+名词/动词 ing形式”表示禁止或规劝，常用于公共场所。
No
smoking!
No
photos!
No
spitting!
No
parking!
No
talking!
No
eating.
No
drinking.
祈使句用法歌诀
祈使句，祈使句，请求、命令或建议。
主语是you常省去，动词原形开头记。
否定形式要注意，句首要把Don't加。
要讲客气用please，句首、句末没关系。
Practice
【运用】汉译英。
1. 请看图片，Jim！
2. 不要在晚饭后吃冰激凌。
3. 在图书馆里请保持安静。
4. 对朋友们要好。
5. 让我帮助你。
6. 不要和你的朋友打架。
Please
look
at
the
picture,Jim!
Don't
eat
ice-cream
after
dinner.
Be
quiet
in
the
library.
Be
good
to
friends.
Let
me
help
you.
Don’t
fight
with
your
friend(s).
3a
Write
the
rules
for
the
school
library.
Library
Rules
Don’t
talk.
________________
________________
________________
Don’t
listen
to
music.
Don’t
eat
or
drink.
Don’t
take
photos.
3b
Use
the
words
to
make
questions
about
the
rules.
Then
write
answers
according
to
your
school.
Be
quiet
(she/have
to
/in
the
library)
Q:
Does
she
have
to
be
quiet
in
the
library
A:
Yes,
she
does.
2.
Eat
(he/have
to/in
the
dining
hall)
Q:
________________________________
A:
_____________
3.
Listen
to
music
(we/can/in
the
hallways)
Q:
________________________________
A:
_____________
4.
Wear
a
hat
(we/can/in
the
classroom)
Q:
_____________________________
A:
____________
Yes,
he
does.
Does
he
have
to
eat
in
the
dining
hall
Can
we
listen
to
music
in
the
hallways
No,
we
can’t.
Can
we
wear
a
hat
in
the
classroom
No,
we
can’t.
Library
Rules
Keep
books
tidy
(整洁)
and
clean.
Keep
quiet.
Don’t
talk
loudly.
Give
books
back
on
time.
Don’t
use
(使用)
others’
library
card.
Be
friendly/polite
(礼貌).
Don’t
bring
any
food
or
drink.
Don’t
bring
your
backpack.
Don’t
bring
wet
umbrellas.
We
don’t
have
to
wear
school
uniforms…
3c
Make
up
five
cool
rules
for
your
dream
school.
Share
your
rules
with
the
class.
Your
classmates
vote
for
the
Coolest
School!
At
my
dream
school,
we
don’t
have
to
come
to
school
every
day…
We
can
eat
in
class…
We
don’t
have
to
do
homework
every
day…
At
my
dream
school,
we
don’t
have
to
come
to
school
every
day.
We
can
eat
in
the
classroom.
We
can
listen
to
music
in
class.
We
don’t
have
to
do
homework.
We
don’t
have
to
wear
school
uniforms
at
school.
Great!
Your
school
is
the
coolest.
谢谢
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Unit
4
Don’t
eat
in
class.
SectionA2d-3c同步练习
句型转换。
1．Tom
has
to
go
to
bed
before
nine
thirty.
(改为否定句)
Tom
________
________
________
go
to
bed
before
nine
thirty.
2．Jack
has
to
play
the
piano
every
weekend.(改为一般疑问句)
________Jack
________
________play
the
piano
every
weekend
3．You
can't
be
late
for
class
next
time.(改为祈使句)
_____________________________________________
4．Be
quick.(改为否定句)
_____________________________________________
5．—Does
Jane
have
to
wear
a
sweater
at
school
(补全肯定答语)
—Yes,
______
______.
单选。
1.Tom，please
_____
the
classroom
now.
A．clean
B．to
clean
C．cleans
D．cleaning
2.
—________dressed
now!
We
have
to
go
in
ten
minutes.
—OK,
Mom.
A．Getting
B．Get
C．To
get
D．Gets
3.Let's
_____
on
time
for
classes.
A．be
B．be
not
C．are
D．is
4.
Sorry，you
_____
play
basketball
in
the
classroom.
A．can't
B．don't
C．don't
have
to
D．doesn't
5.Daniel,
________
play
with
the
mobile
phone
while
you're
walking
in
the
street.
A．don't
B．doesn't
C．won't
D．can't
三、完成句子。
1.这是我第一次把音乐播放器带到学校。
It’s
my
first
time
to
bring
my
______
______
______
______.
2. 我们在课堂上必须讲英语。
We
________
_________
English
in
class.
3. 在星期日我们不必早起。
We
______
______
______
get
up
early
on
Sundays.
4.不要在公交车站玩耍。
______
______
at
the
bus
station.
5.亨利睡前不得不做什么呢？
_________
_________
Henry
_________
_________
_________
before
sleep
四、阅读
The Maine Middle
School Library
Opening
Hours (开放时间)
Monday:
09:00
—17:00
Tuesday:
09:00—17:00
Wednesday:
09:00—20:00
Thursday:
09:00—17:00
Friday:
08:00—15:00
Saturday:
09:00—12:00
Sunday:
Closed
(关闭)
Library
Rules
●All
students
must
have
a
library
card.
●Computers
are
for
schoolwork
only.
●Don’t
eat.
●No
running.
●No
phone
calls.
●Students
can
borrow
(借)
3
books
at
one
time.
根据材料内容选择最佳答案。
(
)1.
On
Wednesday,
the
library
is
open
for
______
hours.
A.
3
B.
7
C.
8
D.
11
(
)2.
The
library
doesn’t
open
on
______.
A.
Monday
B.
Tuesday
C.
Saturday
D.
Sunday
(
)3.
Students
can
borrow
______
books
from
the
library
every
time.
A.
two
B.
three
C.
four
D.
five
(
)4.
Which
of
the
following
(下列)
is TRUE
A.
There
aren’t
any
phones
in
the
library.
B.
The
library
always
opens
at
9:00
in the
morning.
C.
Students
can
do
homework
on
the
library
computers.
D.
Students
can
go
to
the
library
on
Saturday
afternoon.
(
)5.
Which
picture
might
(可能)
we
see
in
the
library
A.
B.
C.
D.
Unit
4
Don’t
eat
in
class.
SectionA2d-3c同步练习答案
一、1.doesn’t
have
to
2.Does
have
to
3.Don’t
be
late
for
class
next
time.
4.Don’t
be
quick.
5.he
does
二、ABAAA
三、1.music
player
to
school
2.must
speak
English
3.don’t
have
to
4.Don’t
play
5.What
does
have
to
do
DDBCB
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