(共36张PPT)
Unit 9
Can you come to my party
Section A Grammar Focus-3c
New words
refuse
v. 邀请
v. 接受
v. 拒绝
/ n'va t/
/ k'sept/
/r 'fju z/
invite
accept
Review
1. 为考试而做准备
2. 看医生
3. 上钢琴课
4. 帮助我的父母亲
5. 拜访我的姑姑
prepare for an exam
go to the/a doctor
have a piano lesson
help my parents
visit my aunt
Pairwork
A: Can he/she/they come to …
B: No, he/ she/ they can’t.
He/ She/ They (might) have (has) to/ must…
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
How to accept an invitation.
Yes, I’d love/like to.
Certainly, I’d love/like to.
Sure, I’d love/like to.
Thanks for your invitation.
Thanks for asking me.
Summary
How to decline an invitation.
I’m sorry, I can’t. I have to …
I’d love to, but I have to …
Sorry, I can’t. I’m going to ...
Thanks for your invitation.
Thank you for asking me.
3a
Complete the answers with might and one of the phrases in the box.
watch TV
on the weekend
my cousin
visit my grandparents
practice the violin
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.
_____________________
visit my grandparents.
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: _______________________________________
I don’t know. I might finish it on the weekend.
I’m not sure. I might go with my cousin.
I’m not sure. I might have to practice the violin.
3b
Complete the sentences below. Use the words in brackets to help you.
1. Inviting:___________________________ (can/play tennis)
Accepting:________________________________
2. Inviting:_______________________________________
(would like to/go to the movies)
Refusing:________________________________
Reason:__________________________________
(might have to)
Can you play tennis on Saturday
Sure. That sounds great.
Would you like to go to the movies on Friday
Sorry, I can’t.
I might have to go out with my parents.
3. Inviting: __________________________________
(can/hang out with us tonight)
Refusing: _________________________________
Reason: __________________________________(must)
4. Inviting: __________________________________
__________________________________
(would like to / come to my birthday party)
Accepting:________________________________
Can you hang out with us tonight
Would you like to come to my birthday
party
Sorry, I’m not free.
Sure, I’d love to.
I must study for a test.
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.
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
MON.
TUE.
WED.
THUR.
FRI.
SAT.
SUN.
Language points
情态动词Can的用法
Can是一个常见的情态动词，表示说话人的语气或情态，基本意思是“能；会”。它没有人称和数的变化，在句子中不能单独作谓语，其后必须跟实义动词原形。can的否定形式为can not/can’t/cannot；过去式为could，其过去否定形式为could not/couldn’t。
情态动词Can有以下常见用法：
1. 表示能力
情态动词can一般指体力、知识、技能等方面的能力，即“能够；会”。
例：我哥哥会游泳，但是我不会。
My brother can swim but I can’t.
2. 表示许可
多用在口语中，表示请求或允许，意为“可以；能够”等。用于疑问句中用来提出要求，用于否定句中表示不允许。
例：我可以用你的钢笔吗？
Can I use your pen
3. 表示推测
情态动词can表示推测时，常用于否定句或疑问句，意为“（不）可能”。用于肯定句中表示理论上的可能性，意为“有时会”。
例：这里的春天有时可能会非常冷。
It can be very cold here in spring.
4. 表示邀请
情态动词can除了表示能力、许可或猜测之外，还可以表示邀请；could较can更礼貌、委婉。表示邀请时的用法如下：
（1）当用情态动词can发出邀请时，用一般疑
问句Can+主语+动词原形+其他？
例：你能来参加我的聚会吗？
Can you come to my party
（2）当用情态动词can发出邀请时，其回答分
为两类。一类表示接受邀请，另一类表示
拒绝邀请。
Sure, I’d love to.
Sorry. I’m not available.
I’d love to, but I’m afraid I can’t.
例：当然，我很乐意。
Sure, I think he
/she/they will.
当然，我想他/她/他们会的。
对不起，我没有空。
我很乐意去，但是恐怕我不能去。
情态动词有：may/might, can/could, must, have to,
shall/should, will/would, ought to,
need, dare, used to
1. 不能独立作谓语，只能和动词原形一起构成谓语，
表示说话人的语气和情态。
2. 没有人称和数的变化。 (have to除外)
3. 否定形式：在其之后加not (have to除外)。
疑问形式：情态动词提到主语之前 (have to 除外)。
都可表示“许可” 。may用于较正式、
客气的场合，而can比较随便（口语）。
You may/can sit here.
The policeman says you can’t park here.
1. can/may
(2) May/Can I/we… 表示征询对方许可。
Can you… 表示请求。
— May I use your phone
— Yes, you can. / Yes, please.
No, you can’t. / No, you mustn’t.
Mr. Read looks pale. He may be ill.
(事实上的可能)
Mr. Read is in poor health. He can be ill
at any time. (逻辑、理论上的可能)
(3) 都可表示“可能性”
肯定句
否定句
This news may not be true. (也许不 = might not )
This news can’t be true. (不可能 = couldn’t)
疑问句
Can this news be true (=Could)
≠May this news be true
(1) can = am/is/are able to
= shall/will be able to
① No one can do it. = No one is able to do it.
② Can you come tonight
=Will you be able to come tonight
2. can/be able to
have to 后接动词原形；have to有人称、数和
时态的变化, 其第三人称单数形式为has to，其
疑问形式和否定形式要借助于助动词do, does
或did来完成。
3. have to的意思是“必须、不得不”， 往往
强调由于客观原因而必须做某事。
我们不得不在家照顾我们的妹妹。
We have to look after our sister at home.
明天早上他必须早起吗？
Does he have to get up early tomorrow morning
今天我不必呆在家里。
I don’t have to stay at home today.
例：
(1) 这4个情态动词没有人称的变化，而have to有,
它的第三人称单数为“has to” 如：
He should study hard.
He has to study hard.
4. 情态动词“have to”与其他的情态动词如 “can”,
“may” “must” 和 “should” 不同。
例: 他能和我们一起去吗？
他不能和我们一起去。
(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。
Can he go with us
He can’t go with us.
而“have to”要加助动词do , does或did才可能
完成其疑问句、否定句。
I don’t like this TV set. I must buy a new one.
This TV set doesn’t work. We have to buy a new one.
5. must/have to
must表示主观“必须”；have to表示客观
需要，即“不得不” 。
1. Thank you for (ask/ asking), but I can’t go to the movies with you.
2. Paul has to study (at/ for) the math test
tonight.
3. My sister has too (much/ many) homework
to do.
Exercise
一、选择正确的选项填空。
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
1. Can you play tennis with on Saturday
A. us B. we C. our D. ours
2. Henry his homework this afternoon.
A. have to do B. have to doing
C. has to do D. has to doing
二、选择题
3. Tony is playing tennis ________ the school team.
A. on B. in C. to D. with
4. Jim ________ play soccer with his friend this
weekend, because he is very busy.
A. can B. cans C. cann’t D. can’t
三、翻译下面的句子。
Would you like to come to my birthday party It’s at four thirty on Friday.
Can you come to my place to have a dinner
on Sunday
2. 你想参加我的生日聚会吗？是星期五的四
点半。
1. 你周日能去我家吃晚饭吗？
— Can you come to my party
— I’m not sure. I might have to help my mom.
Sure, I’d love to.
— Can she go to the movies
— No, she can’t. She’s playing soccer.
5. —她能去看电影吗？
—不，她不能，她正在踢足球。
3. —你能参加我的晚会吗？
—我不确定。我可能得帮助我妈妈。
4.当然可以。我很愿意。
