Unit 9 Can you come to my partySection A第2课时课件(共33张PPT)

(共33张PPT)
Unit 9 Can you come to my party
R 八年级上册
Section A 第2课时
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 doctor
have a piano lesson
help my parents
visit my aunt
Grammar Focus
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.
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.
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 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._________________
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: ____________________________________
I might finish it on the weekend.
I might go with my cousin.
No. I might visit grandparents.
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 come to play tennis
Sure, that sounds great.
Would you like to go to the movies
I’m afraid not.
I might have to do my homework .
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
No, I can’t.
Sure, I’d love to.
I must practice the violin tonight.
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.
MON.
TUE.
WED.
THUR.
FRI.
SAT.
SUN.
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
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”。
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。
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”。
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。情态动词can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？
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.当然,我很乐意。
Sure, I think he/she/they will.
当然,我想他/她/他们会的。
Sorry. I'm not available.对不起,我没有空。
I'd love to, but I'm afraid I can't.
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)。
1. can/may
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 smoke here.
The policeman says you can’t park here.
(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. Reed 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
2. can/be able to　
(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
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。
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或does来完成。
We have to look after our sister at home.
我们不得不在家照顾我们的妹妹。
Does he have to get up early tomorrow morning
明天早上他必须早起吗？
I don’t have to stay at home today.
今天我不必呆在家里。
4. 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.
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 , does或did才可能完成其
疑问句、否定句。
5. must/have to
must 表示主观“必须”；have to表示客观客观需要，
即“不得不” 。
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.
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
Exercise
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
二、选择题
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
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
A
C
B
D