外研版必修4 Module 2 Traffic Jam Grammar 课件（40张PPT）
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| 名称 | 外研版必修4 Module 2 Traffic Jam Grammar 课件（40张PPT） |  | |
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| 科目 | 英语 | ||
| 更新时间 | 2020-05-16 15:05:37 | ||
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(共40张PPT)
Period 3
Module 2 Traffic Jam
Grammar
Imperatives
(祈使句)
No smoking!
Don’t drink!
Attention！
Parking!
What do they mean?
Grammar-1. Look & Say Look at the signs and say what they do.
Don’t go faster than 90 kph.
Turn right.
Don’t walk. / No pedestrians.
Don’t turn left. / No left turn.
Don’t stop. / No parking
They give instructions
一.祈使句的定义
用于表达命令、请求、劝告、警告、禁止等的句子叫做祈使句。
Look at the following sentences:
Go and wash your hands. （去洗手。——命令）
Be quiet, please.（请安静。——请求）
Be kind to our sister. （对姊妹要和善。——劝告）
Look out！Danger！（小心！危险！—警告）
Keep off the grass. （勿践草坪。——禁止）
Can you tell me what are imperatives?
定义:
祈使句无_____，主语you常______；
动词_____谓语当，句首加_____变否定；
主语
省去
原形
Don’t
Are the following sentences imperative? (discuss in pairs)
He is always sleeping in the class.
It’s a beautiful day, isn’t it?
Tell me your name, please?
Will he come tonight?
Mary, come here!
(√)
(×)
(×)
(×)
(√)
二.祈使句的结构
1. Observation What’re the features of imperative?
Listen to me carefully.
Come in and sit down, please.
Don’t close the window – it’s hot.
Be quiet! Be a good boy!
Let’s try our best to improve our environment.
Listen
Come
sit
Don’t
Be
Let’s
Be
2. Conclusion
Do 型 （以行为动词开头）
Stand up!
Don’t stand up! / Never stand up!
Be 型 （以be动词开头）
Be careful.
Don’t be late./ Never be late.
Let型 （以let开头）
Let him in.
Let me help you.
◆ 肯定结构:
◆ 否定结构:
① Do型和Be型的否定式都是在句首加don’t构成。如:不要忘记我!
Don’t forget me! /Don’t be late!
② Let型的否定式有两种:“Don’t + let + 宾语 + 动词原形 + 其它成分”和“Let + 宾语 + not + 动词原形 + 其它成分”。如:别让他走。
Don’t let him go. / Let him not go.
③ 有些可用no开头, 用来表示禁止性的祈使句。如:禁止吸烟！禁止钓鱼！
No smoking!
No fishing!
用祈使句完成下列句子。
1. _____ on the pavement （人行道）.
2. _____ in the bicycle lanes.
3. ______ at red traffic lights.
4. ______ the rules of the road.
Go
Ride
Stop
Keep
go, keep, look, ride, stop, stay, watch out
5. _________ for pedestrians （行人）.
6. ______ behind you before you turn right or left.
7. __________ in the middle of the road.
Look
Watch out
Don’t stay
go, keep, look, ride, stop, stay, watch out
三.祈使句中应注意的几个问题
Do be patient!
Do sit down.
Do write back when you receive his letter.
Tom, you clean the room.
Don’t you be late again next time!
What is different now?
1.
加强祈使句语气的方式:
Do / you+动词原形
此句型为“条件与结果”并存的句式，其中的祈使句可转化为if条件句。
e.g. Work hard and you will succeed.
= If you work hard, you will succeed.
Hurry up, or you will miss the last bus.
= If you don’t hurry up, you will miss
the last bus.
2.祈使句(,) +and / or+ 简单句
是一种固定句式。
这一句式也可以演变为“名词性短语+and+简单句”的形式。
More time, and I could have done it better.
如果多给我一些时间，我可以做得更好。
3.祈使句的附加疑问句
Open the door, ___________________?
Don’t forget, _________________?
Let us go there, ______________?
Let’s go there at once, __________?
will you?/（won’t you）
will you
shall we
will you
Open
Don’t
Let’s
Let us
总结：1、祈使句为肯定句，其反义疑问句用will you/won’t you
2、祈使句为否定句，其反义疑问句用will you
3、let开头的祈使句构成反义疑问句时，除let’s 开头的用shall we 外，其他的均用will you
e.g. Put on your coat, please—it’s very cold outside.
Turn down the TV set—the baby is asleep in the room.
4. 祈使句+破折号+附加信息；附加信息常表示发出祈使动作的原因。
Exercise
Turn down the TV,
Don’t smoke in the meeting room,
Let’s take a walk after supper,
Let the boy go first ,
will/won’t you?
will you ?
shall we?
will you?
一、完成下列反义疑问句
二、用祈使句改下下面的句子
1、You’t better not come late again.
_____________late again.
2、You must be careful in the coming examination .
_______ in the coming examination.
3、Why don’t you choose to work on foot at rush hours?
________choose to work on foot at rush hours?
Don’t come
Be careful
Why not
4、Would you like to wait a moment?
_________a moment.
5、Will you please not play with my pencil?
________with my pencil,____
Please wait
Don’t play
please
三、单句语法填空
1、Never _______(speak)with your mouth full of food.
2、Don’t talk and _____(read)a book.
3、————(look)out！A car is coming.
4、let’s ______(sweep)the floor.
5、Follow your doctor’s advice,or your cough ______(get)worse.
speak
read
Look
sweep
will get
单句改错
1.Let us try again,shall we?
2.Don’t say that again and I will hit you.
3.To try some of the juice----perhaps you’ll like it.
shall we 改成will you
and 改成or
To try 改成Try
4.You ‘d better pay not a visit to him soon.
5.Don’t touch papers on my desk,can you?
pay not 改成 not pay
can改成will
2. ________ remember to turn off
the lights before you leave the lab.
A. Be sure B. Do
C. Make sure D. Does
1. Stand over there ___ you’ll be able to see it better.
A. or B. while C. but D. and
走近高考：
3. Let us pass, _______?
A. shan’t we B. shall we
C. won’t we D. will you
4. Wait a minute, ______?
A. shall you B. will you
C. do you D. don’t you
5. ___ down the radio—the baby’s asleep
in the next room.
A. Turning B. Turned
C. Turn D. To turn
祈使句以动词原形开头。
6 You’d better not smoke here, _______?
A. will you B. shall you
C. have you D. had you
有had better 的句子构成反意疑问句, 用had 构成。
7. Don’t forget to phone me, ______?
A. do you B. needn’t you
C. won’t you D. will you
否定祈使句的反意疑问句用will 构成。
8. Let’s have a cup of tea, ________?
A. shall you B. will you
C. shall we D. won’t you
以let’s 开头的祈使句用shall we, 以let us开头的祈使句用 will you, 构成反意疑问句。
9.________, I think, and the problem
could be settled.
A. If you don’t doubt your efforts
B. As you keep up your spirits
C. Making great efforts
D. A bit more efforts
10. It’s really very dangerous. One
more step, ______the baby will
fall into the well.
A. or??? B. so that?
?C. and??? D. if?
Grammar-6. Practice (3ms)
--- English has a large vocabulary, hasn’t it?
--- Yes. _______ more words and expressions and you will find it easier to read and communicate.
A. Know???B. Knowing???C. To know???D. Known
2． Stand over there _______ you’ll be able to see it better.
?A. or?? B. while? C. but?? D. and?
---I’ve never seen anyone run so fast. ?? --- ______ David go.
? A. just watch?????? ? B. just to watch? ? C. just watching?? ?D. just having watched
A
D
A
Grammar-6. Practice (3ms)
4. --- Don't forget to my birthday party tomorrow. ????? --- ________ .
? A. Yes , I won’t???? ?B. No , I won’t ? C. No , I will???????? ?D. Yes， I will ?5. Be sure to write to us, ________? ? A. will you?? ??B. aren’t you? ? C. can you? ?? D. mustn’t you ?6. One more week, ______ we will accomplish the task. ? A. or???? B. so that? ?C. and??? D. if?
B
A
C
Grammar-6. Practice
7. _____ blood if you can and many lives will be saved.
? A. Giving?? ??B. Give?? ?? C. Given? ???D. To give ?8. ______ this book and tell me what you think of it. ? A. Look through?? ? B. Look on? ? C. Look into? ?? D. Look up ??9. ________it with me and I‘ll see what I can do. ? A. When left ?? B. Leaving ?C. If you leave ?? D. Leave
B
A
D
Homework
Finish the related exercises on WB.
Review the the grammar of this period.
Period 3
Module 2 Traffic Jam
Grammar
Imperatives
(祈使句)
No smoking!
Don’t drink!
Attention！
Parking!
What do they mean?
Grammar-1. Look & Say Look at the signs and say what they do.
Don’t go faster than 90 kph.
Turn right.
Don’t walk. / No pedestrians.
Don’t turn left. / No left turn.
Don’t stop. / No parking
They give instructions
一.祈使句的定义
用于表达命令、请求、劝告、警告、禁止等的句子叫做祈使句。
Look at the following sentences:
Go and wash your hands. （去洗手。——命令）
Be quiet, please.（请安静。——请求）
Be kind to our sister. （对姊妹要和善。——劝告）
Look out！Danger！（小心！危险！—警告）
Keep off the grass. （勿践草坪。——禁止）
Can you tell me what are imperatives?
定义:
祈使句无_____，主语you常______；
动词_____谓语当，句首加_____变否定；
主语
省去
原形
Don’t
Are the following sentences imperative? (discuss in pairs)
He is always sleeping in the class.
It’s a beautiful day, isn’t it?
Tell me your name, please?
Will he come tonight?
Mary, come here!
(√)
(×)
(×)
(×)
(√)
二.祈使句的结构
1. Observation What’re the features of imperative?
Listen to me carefully.
Come in and sit down, please.
Don’t close the window – it’s hot.
Be quiet! Be a good boy!
Let’s try our best to improve our environment.
Listen
Come
sit
Don’t
Be
Let’s
Be
2. Conclusion
Do 型 （以行为动词开头）
Stand up!
Don’t stand up! / Never stand up!
Be 型 （以be动词开头）
Be careful.
Don’t be late./ Never be late.
Let型 （以let开头）
Let him in.
Let me help you.
◆ 肯定结构:
◆ 否定结构:
① Do型和Be型的否定式都是在句首加don’t构成。如:不要忘记我!
Don’t forget me! /Don’t be late!
② Let型的否定式有两种:“Don’t + let + 宾语 + 动词原形 + 其它成分”和“Let + 宾语 + not + 动词原形 + 其它成分”。如:别让他走。
Don’t let him go. / Let him not go.
③ 有些可用no开头, 用来表示禁止性的祈使句。如:禁止吸烟！禁止钓鱼！
No smoking!
No fishing!
用祈使句完成下列句子。
1. _____ on the pavement （人行道）.
2. _____ in the bicycle lanes.
3. ______ at red traffic lights.
4. ______ the rules of the road.
Go
Ride
Stop
Keep
go, keep, look, ride, stop, stay, watch out
5. _________ for pedestrians （行人）.
6. ______ behind you before you turn right or left.
7. __________ in the middle of the road.
Look
Watch out
Don’t stay
go, keep, look, ride, stop, stay, watch out
三.祈使句中应注意的几个问题
Do be patient!
Do sit down.
Do write back when you receive his letter.
Tom, you clean the room.
Don’t you be late again next time!
What is different now?
1.
加强祈使句语气的方式:
Do / you+动词原形
此句型为“条件与结果”并存的句式，其中的祈使句可转化为if条件句。
e.g. Work hard and you will succeed.
= If you work hard, you will succeed.
Hurry up, or you will miss the last bus.
= If you don’t hurry up, you will miss
the last bus.
2.祈使句(,) +and / or+ 简单句
是一种固定句式。
这一句式也可以演变为“名词性短语+and+简单句”的形式。
More time, and I could have done it better.
如果多给我一些时间，我可以做得更好。
3.祈使句的附加疑问句
Open the door, ___________________?
Don’t forget, _________________?
Let us go there, ______________?
Let’s go there at once, __________?
will you?/（won’t you）
will you
shall we
will you
Open
Don’t
Let’s
Let us
总结：1、祈使句为肯定句，其反义疑问句用will you/won’t you
2、祈使句为否定句，其反义疑问句用will you
3、let开头的祈使句构成反义疑问句时，除let’s 开头的用shall we 外，其他的均用will you
e.g. Put on your coat, please—it’s very cold outside.
Turn down the TV set—the baby is asleep in the room.
4. 祈使句+破折号+附加信息；附加信息常表示发出祈使动作的原因。
Exercise
Turn down the TV,
Don’t smoke in the meeting room,
Let’s take a walk after supper,
Let the boy go first ,
will/won’t you?
will you ?
shall we?
will you?
一、完成下列反义疑问句
二、用祈使句改下下面的句子
1、You’t better not come late again.
_____________late again.
2、You must be careful in the coming examination .
_______ in the coming examination.
3、Why don’t you choose to work on foot at rush hours?
________choose to work on foot at rush hours?
Don’t come
Be careful
Why not
4、Would you like to wait a moment?
_________a moment.
5、Will you please not play with my pencil?
________with my pencil,____
Please wait
Don’t play
please
三、单句语法填空
1、Never _______(speak)with your mouth full of food.
2、Don’t talk and _____(read)a book.
3、————(look)out！A car is coming.
4、let’s ______(sweep)the floor.
5、Follow your doctor’s advice,or your cough ______(get)worse.
speak
read
Look
sweep
will get
单句改错
1.Let us try again,shall we?
2.Don’t say that again and I will hit you.
3.To try some of the juice----perhaps you’ll like it.
shall we 改成will you
and 改成or
To try 改成Try
4.You ‘d better pay not a visit to him soon.
5.Don’t touch papers on my desk,can you?
pay not 改成 not pay
can改成will
2. ________ remember to turn off
the lights before you leave the lab.
A. Be sure B. Do
C. Make sure D. Does
1. Stand over there ___ you’ll be able to see it better.
A. or B. while C. but D. and
走近高考：
3. Let us pass, _______?
A. shan’t we B. shall we
C. won’t we D. will you
4. Wait a minute, ______?
A. shall you B. will you
C. do you D. don’t you
5. ___ down the radio—the baby’s asleep
in the next room.
A. Turning B. Turned
C. Turn D. To turn
祈使句以动词原形开头。
6 You’d better not smoke here, _______?
A. will you B. shall you
C. have you D. had you
有had better 的句子构成反意疑问句, 用had 构成。
7. Don’t forget to phone me, ______?
A. do you B. needn’t you
C. won’t you D. will you
否定祈使句的反意疑问句用will 构成。
8. Let’s have a cup of tea, ________?
A. shall you B. will you
C. shall we D. won’t you
以let’s 开头的祈使句用shall we, 以let us开头的祈使句用 will you, 构成反意疑问句。
9.________, I think, and the problem
could be settled.
A. If you don’t doubt your efforts
B. As you keep up your spirits
C. Making great efforts
D. A bit more efforts
10. It’s really very dangerous. One
more step, ______the baby will
fall into the well.
A. or??? B. so that?
?C. and??? D. if?
Grammar-6. Practice (3ms)
--- English has a large vocabulary, hasn’t it?
--- Yes. _______ more words and expressions and you will find it easier to read and communicate.
A. Know???B. Knowing???C. To know???D. Known
2． Stand over there _______ you’ll be able to see it better.
?A. or?? B. while? C. but?? D. and?
---I’ve never seen anyone run so fast. ?? --- ______ David go.
? A. just watch?????? ? B. just to watch? ? C. just watching?? ?D. just having watched
A
D
A
Grammar-6. Practice (3ms)
4. --- Don't forget to my birthday party tomorrow. ????? --- ________ .
? A. Yes , I won’t???? ?B. No , I won’t ? C. No , I will???????? ?D. Yes， I will ?5. Be sure to write to us, ________? ? A. will you?? ??B. aren’t you? ? C. can you? ?? D. mustn’t you ?6. One more week, ______ we will accomplish the task. ? A. or???? B. so that? ?C. and??? D. if?
B
A
C
Grammar-6. Practice
7. _____ blood if you can and many lives will be saved.
? A. Giving?? ??B. Give?? ?? C. Given? ???D. To give ?8. ______ this book and tell me what you think of it. ? A. Look through?? ? B. Look on? ? C. Look into? ?? D. Look up ??9. ________it with me and I‘ll see what I can do. ? A. When left ?? B. Leaving ?C. If you leave ?? D. Leave
B
A
D
Homework
Finish the related exercises on WB.
Review the the grammar of this period.