人教版初中英语七年级下册Unit 4 Don’t eat in class Section A Grammar Focus-3c (共39张PPT，内嵌视频)

(共39张PPT)
Section A Grammar Focus-3c
Unit 4
Don’t eat in class !
Unit 4
Don’t eat in class !
Unit 4
Don’t eat in class !
Learning aims
Key words & phrases:
in the hallways; be on time for; library rules; dream school; don't have to.
Key sentences:
1. We must be on time for class.
2. Can we wear a hat in class
3. Does he have to wear a uniform at school
To learn the imperatives and some modal verbs.
________ let them in. _________ let them see
______ the good girl . You always have to be
Conceal, don't feel ,don’t ________ them know
Well, now they know.
____________. ____________.
Can't hold it back anymore
Let it go. Let it go
______ away and slam the door
I don’t care what they’re going to say
_____ the storm rage on
The cold never bothered me anyway
Don’t
Be
Don’t
Let it go
Let it go
Turn
Let
let
Don't let them in, don't let them see
别让别人知道，别让别人看到
Be the good girl you always have to be
做个好姑娘，你必须一直都是
Conceal, don't feel, don't let them know
要隐藏，不要动真情，不要让别人知道
Well, now they know
好吧，现在他们知道了
What do they have in common
What do they have in common
Let it go, let it go
随他吧，随他吧
Can't hold it back anymore
反正再也无法隐瞒
Let it go, let it go
不管他，不害怕
Turn away and slam the door
转过身关上门
表示“劝告”
没有主语
动词原形开头
句子单词数量较少
祈使句
一般用来表示请求、命令、劝说、号召、警告等。
在祈使句中，通常省略主语you，其肯定形式以动词原形开头，否定形式是在动词原形前加don’t。
祈使句句尾用句号或感叹号，读时用降调。为表示礼貌，可以在句首或句尾加上please。句末用please时，前面通常加逗号
Don't let them in, don't let them see
Be the good girl .
Let it go. Let it go
Let the storm rage on
Let it go. Let it go
Turn away and slam the door
肯定祈使句
否定祈使句
Let it go. Let it go
Be the good girl .
Turn away and slam the door
Let the storm rage on
肯定祈使句
① Be 型祈使句
② let 型祈使句
③ do型祈使句
① Do 型祈使句
Turn right !
Stand up !
Don’t stand up !
Don’t turn right !
肯定形式：动原(+宾语) +其他.
否定形式：Don’t+动原+其他.
② Be 型祈使句
Be quiet !
Be careful !
Don’t be careful !
Don’t be quiet !
肯定形式：Be+表语（名词或形容词）+其他.
否定形式：Don’t be+表语（名词或形容词）+其他.
③ let 型祈使句
Let’s go to school!
Let me help you!
Don’t let me help you!
Let’s not go to school!
肯定形式：Let+宾语+动词原形+其他.
否定形式：Don’t let+宾语+动词原形+其他.
Let+宾语+not+动词原形+其他.
肯定祈使句
② Be 型祈使句
③ let 型祈使句
① do型祈使句
否定祈使句
Don’t be+表语+其他.
Don’t let+宾语+动原+其他.
Let+宾语+not+动原+其他.
Don’t+动原+其他.
Be+表语+其他.
动原+其他.
Let+宾语+
动原+其他.
Let’s sing~
Let’s sing~
No + 动词-ing!
No + 名词!
禁止
肯定祈使句
② Be 型祈使句
③ let 型祈使句
① do型祈使句
否定祈使句
Don’t be+表语+其他.
Don’t let+宾语+动原+其他.
Let+宾语+not+动原+其他.
Don’t+动原+其他.
Be+表语+其他.
动原+其他.
Let+宾语+
动原+其他.
No + 动词-ing!
No + 名词!
表示“禁止”
DLNB
Game Time
连连看
1.It’s an important meeting. __________ (not, be)late.
2. ____________ (not, make) any noise! Your mother is sleeping.
3. ____________ ( not, talk) and ____________ (read) aloud.
4. The notice on the wall says “______________“(no smoke).
5. ____________ (look) out! A car is coming.
6. ____________ (not, let) the baby cry.
7. Let’s ____________ (not, say) anything about it.
Don’t be
Don’t make
Don’t talk
read
No smoking
Look
Don’t let
not say
exercises
Write the rules for the school library.
1
2
3
4
Library Rules
1._________________________
2._________________________
3._________________________
4._________________________
Don’t talk.
Don’t listen to music in the library.
Don’t eat in the library.
Don’t take photos in the library.
Don’t run in the hallways. Don’t fight.
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.
Can we wear a hat in class Yes, we can. / No, we can’t.
Does he have to wear a uniform at school Yes, he does. / No, he doesn’t.
What do you have to do We have to be quiet in the library.
Be on time for class !
Don’t eat in classroom !
Don’t wear a hat in class !
Wear a school uniform !
Be quiet in the library !
改写为祈使句
Don’t run in the hallways. Don’t fight.
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.
Can we wear a hat in class Yes, we can. / No, we can’t.
Does he have to wear a uniform at school Yes, he does. / No, he doesn’t.
What do you have to do We have to be quiet in the library.
否定祈使句
情态动词can的一般疑问句及其答句
情态动词have to的一般疑问句及其答句
have to的特殊疑问句及其答句
询问规则
must
have to
I like English . I must study English hard.
I don’t like English . But I have to study English.
（个人爱好，个人主观想法）
（外界客观原因，不得不学）
must 表示主观的义务和必要，多译为“必须”。
have to 表示客观需要做的事情，多译为“不得不”
她妈妈生病了，她不得不自己做晚饭。
Her mother is ill, she have to cook dinner by herself.
他必须在晚上8点前完成作业。
He must finish his homework before 8:00 in the evening.
没有人称和时态的变化
有人称、数和时态的变化 have to-has to
has to
have to 引导的疑问句
Does he have to wear a uniform at school
Yes, he does.
He has to wear a uniform at school.
（肯定回答）
（否定回答）
No, he doesn’t.
（否定句）
He doesn’t have to wear a uniform at school.
含有have to, has to的句子，分别需要借助动词do，does 构成疑问句或否定句。
（一般疑问句）
have to：情态动词，不能单独做谓语动词
Has to he wear a uniform at school
must 引导的疑问句
Must I finish my homework before eight o’clock
Yes, you must.
No, you mustn’t.
No, you needn’t.
No, you don’t have to.
mustn’t=must not
表示禁止：不许
must 其他用法
You must be hungry.
must: 表示猜测，“一定；必然”
借助动词do，does 构成疑问句或否定句
客观事情:不得不
有人称、数和
时态的变化
have to
主观事情:必须
无人称、数和
时态的变化
引导一般疑问句时，否定回答用
No, you needn’t./
No, you don’t have to.
表示猜测时,意思为“一定；必然”
must
Use the words to make questions about the rules. Then write answers according to your school.
Q:______________________________________ (he/have to/in the dining hall)
A:__________________________________
Does he have to eat in the dinning hall
Yes, he does.
Q: Does she have to be quiet in the library (she/have to/in the library)
A: Yes, she does.
Be quiet
Eat
Can we listen to music in the hallways
No, we can’t.
Can we wear a hat in the classroom
No, we can’t.
Q:_________________________________(we/can/in the hallways)
A:_________________________________
Listen to music
Q:_________________________________(we/can/in the classroom)
A:_________________________________
Wear a hat
Make up five cool rules for your dream school. Share your rules with the class. Your classmates vote for the Coolest School!
We can eat in class.
The girls can keep long hair.
We needn’t go to school every day.
……
Nothing can be accomplished without norms or standards.