八年级英语上册Unit 9 Can you come to my party?SectionA3a-3c课件-（共有PPT25张）

(共25张PPT)
Unit 9 Can you come to my party
Studying Aims
Learn 10 important phrases.
Can for invitation.
Use modal verb. have to
Be+V-ing shows action or plan in the future
.prepare for an exam
.go to the doctor
.have the flu
.help my parents
.meet my friend
REVISION
can的用法
1.表能力“能，会” 否定句 can’t不能
eg. He can swim,but I can’t.
How long can you stay under water
2. 在否定句，疑问句中表示“不可能”或“一定不”
eg. Can he come No,he can’t come.
（他会来吗？不，他不能来．）
Explanation
3. 表邀请。
　　 （1）若接受邀请，回答为：
　　 OK./All right./Sure./ Of course./Certainly./
Yes(Sure),I’d love(like) to.
　　 （2）若不接受邀请，回答为：
　　 Sorry,Ｉcan’t.(+原因)
eg . Can you come to the party
Yes/Sure,I’d love/like to.
Sorry,Ican’t. I have to help my parents.
其他表邀请的句型:
1) Could /Will/Would you come to the party
2) Would you like /love to come to the party
3) I hope you come to the party.
4) Please come to the party.
5) How/What about coming to the party
2.情态动词“have to”与其他的情态动词如：“can” , “may” “must”和 “should” 不同。
（1）这4个情态动词没有人称和数的变化,而have to有。它的第三人称单数为“has to” ,过去时为had to, 如：
He should study hard .
他应该好好学习。
He has to study hard .
他不得不好好学习。
（2）这4个情态动词在一般疑问句中将它们放在句首, 在否定句中直接在他
们后边加not即可。
我们以can为例:
Can he go with us
他能和我们一起去吗？
He can’t go with us .
他不能和我们一起去。
而“have to”要加助动词do ,
has to要加助动词does ,还原 have to
had to要加助动词did,还原 have to
才可能完成其疑问、否定句。
试将下面三种话分别写成
（1）一般疑问句，并做肯定回答。
（2）否定句。
1: They have to go to the party .
Do they have to go to the party
Yes , they do .
They don’t have to go to the party.
2：He has to go to see the doctor .
Does he have to go to see the doctor
Yes , he does .
He doesn’t have to go to see the
doctor .
3： She had to have a piano lesson yesterday.
Did she have to have a piano lesson
yesterday
Yes, she did .
She didn’t have to have a piano
lesson yesterday.
2　.have to强调客观上需要做某事，即表示外界　　　条件的需要不得不做某事，含有“客观所迫”的意味，它有人称和数的变化，可用于多种时态中，否定式为“不必”。
　must强调说话者主观上认为必须做某事，含有“主观判断”的意味，它的否定式意为“禁止，不允许”。
eg. If one gets ill,he’ll have to see a doctor.
She has to go to school by bus.
We must go to school on time.
---Must I finish the homework now
---Yes, you must./No,you needn’t(don’t have to).
You mustn’t play football in the classroom.
Can you come to my party on Saturday Sure, I’d love to.
Sorry, I must study for a math test.
Can you go to the movies tomorrow night Sure. That sounds great.
I’m afraid not. I have the flu.
Can he go to the party No, he can’t. He has to help his parents.
Can she go to the baseball game No. she’s not available. She must go to the doctor.
Can they go to the movies No, they’re not free. They might have to meet their friends.
Grammar Focus
巩固词组(Ask and answer in pairs)
Can you come to my party
Sorry,I can’t. I have to_________.
1.为考试而学习
2.看医生
3.上钢琴课
4.帮助我的父母亲
5.拜访我的姑姑
study for a test
go to the doctor
have a piano lesson
help my parents
visit my aunt
3a Complete the answers with might and one
of the phrases in the box.
1. A: What are you going to do on Saturday
B: I’m not sure. I might______________
2. A: What are you planning to do after school
B: I don’t know. ____________________
watch TV on the weekend my cousin visit grandparents practice the violin
practice the violin.
I might watch TV.
3. A: When will you finish the science
homework
B: ____________________________________
4. A: Who are you going to the movies with
B:____________________________________
5. A: Are you free to come to my place on
Saturday
B: ____________________________________
On the weekend
My cousin
No. I might visit grandparents .
3b Complete the sentences below. Use the
words in brackets to help you.
Inviting: (can / play tennis)
________________________________________________
Accepting:________________________ 2. Inviting: (would like to/ go to the movies)
Reason: (might have to)
______________________________
Refusing :
Can you come to play tennis
Sure, that sounds great.
would you like to go to the movies
I’m afraid not. I have too much
______________________________
3. Inviting: (can/hang out with us tonight)
Reason: (must)
____________________________________
Refusing: _____________________________
4. Inviting: ( would like to / come to my
birthday party)
______________________________________
Accepting:______________________________
homework to do.
Can you hang out with us tonight
Would you like to come to my birthday party
No, I can’t. I must finish my homework.
Sure, I’d love to.
3c Write down everything you have to do next
week. Choose a day and time to have a party.
Then invite classmates to your party.
A: Can you come to my party
B: When is it
A: Next week, on Thursday night.
B: I’m sorry. I have to study for a math test.
星期一 Monday
星期二 Tuesday
星期三 Wednesday
星期四 Thursday
星期五 Friday
星期六 Saturday
星期日 Sunday
Do you know week
表示邀请的句型: (你能来参加我的聚会吗 )
Can you come to my party
Could you come to my party
Would you like to come to my party
接受邀请:
拒绝邀请:
Sure, I’d love/like to.
I’m sorry, I can’t. I have to…
/I’m V-ing…
Exercise
一、选择正确的词
Thank you for (ask/ asking), but I can’t go to the movies with you.
Paul has to study (at/ for) the math test tonight.
My sister has too (much/ many) homework to do.
asking
for
much
4. Can you come to my party (at/ on) Saturday night
5. She invites me (watch/ to watch) the basketball match the day after tomorrow.
6. I like playing (piano/ the piano).
on
to watch
the piano