人教版八年级上册Unit 9 Can you come to my party? Section A Grammar Focus-3c课件(共15张PPT)

(共15张PPT)
Grade 8
Unit 9
Can you come to my party
Section A 2a-2d
Warming-up
Watch and talk
Leading-in
Can the boy swim
Can the dog swim
Yes, he can
No, he can’t.
Talk and discussion
方框中can是情态动词，意思是 _________.
表示句中的主语 _____________,
can放在主语前 _________
能，会
具有某种能力
表示疑问
观察下表，can的用法和上面一样吗？
语法探究之一
观察 思考 回答
Presentation
can的用法和上面________
不一样
用法:_________________________________
表示请求或允许，意为“可以；能”等。
语法探究之一
观察 思考 回答
Presentation
肯定回答常用_______________________________________
Sure，I'd love(like)to./Certainly/Of course.
否定回答常用_______________________________________
_________________________________________________
Sorry/I’m afraid not.等来有礼貌地拒绝。
一般情况下需要说明不能接受邀请的原因以表示歉意。
语法探究之一
观察 思考 回答
Presentation
can的用法和上面________
不一样
用法:_________________________________
询问可能性，意为“能，可能”等。
语法探究之二
观察 思考 回答
Presentation
Do you know the use of have to
Eplaination
“have to”意为“不得不，必须”，它强调一种客观情况，有单、复数及时态的变化，其第三人称单数为has to，过去式为had to。
eg: His mother is ill. He has to stay at home and look after her.
【拓展】have to 与must的区别：
① have to意为“不得不；必须”，它强调一种客观情况。
must意为“必须”，着重于说话人主观上认为有义务、有必要。
eg: We have to go home now because it's dark.
You must do it yourself.
② have to 有人称、时态、数的变化，must无人称、时态、数的变化。
have to的用法
用法: _____________________________________________
____________________________________________________________
语法探究之三
观察 思考 回答
Presentation
might既是may的过去式，又可以是动词原形，表示可能性，意为“可能，也许”。may也有可能的意思，但may所表达的可能性要比might更大。
Practice
watch TV
I might practice the violin
I might finish it on the weekend
I might go with my cousin
Sorry. I might visit my grandparents
Can you play tennis with us
Sure. I’d love to.
Would you like to go to the movies
I’m afraid I can’t.
I might have to prepare for the math exam.
Writing
Can you hang out with us tonight
Sorry, I can't.
I must finish my homework.
Would you like to come to my birthday party
Sure, I'd love to.
Groupwork
Can you come to my party on Saturday afternoon
I’m afraid not. I have the flu.
Groupwork
Talking
Exercises
单项选择。
1．—________I have some bananas
—Yes，please.
A．Can B．Need C．Must D．Should
2．—Can you come to Susan's party
—Sorry，I________look after my grandma.
A．am B．have to C．can D．do
3．—Can you come and play baseball games with us
—________.I must study for a test.
A．Yes，I can B．Yes，I do
C．I am afraid not D．Sure，I'd love
4．—________you come to my party on Sunday
—Sure，I'd love to.
A．Must B．Can C．Should D．Need
A
B
C
B
Homework
Finish the exercises in the wookbook.