Unit 9 Can you come to my party? Section A Grammar Focus
Studying Aims • Learn 10 important phrases. • Can for invitation. • Use modal verb. have to • Be+V-ing shows action or plan in the future
REVISION • .prepare for an exam • .go to the doctor • .have the flu • .help my parents • .meet my friend
have the flu help my parents meet my friend prepare for an exam go to the doctor
Canshe… Can she come to the party? Yes,she can.
Can he go to the baseball game? No,hecan’t. He has to study. Can he…
Can they come to the party？ Can they… No ，they can’t.They have to study for the math test.
A: Can your mother go to the concert? B: When is it? A: It’s on Saturday evening. B: Sure/ Yes/ Certainly, she’d love to. B: No, she can’t. She is doing housework. She has to babysit my sister. She has a party with her friends. your mother concert Monday evening do housework babysit my sister have a party with her friends
A: Can they play football with us? B: When is it? A: It’s on Sunday afternoon. B: Sure, they’d love to Yes, they can. they play football Sunday afternoon have an English test visit their teachers do homework B: No, they can’t. They have an English test. They are visiting their teachers. They have to do their homework.
Accept Invitations: Sure/Yes/Of course, I’d love to. Certainly, I’d like to. Decline invitations: I’m sorry, I can’t. I have to look after my grandmother. I have a piano lesson. I am going shopping with my friend. …… help my parents/ visit my aunt/ play football/ study for the English test/have a piano lesson/ go to the mall/ babysit my sister/ do homework/go to the movies/ go to my guitar lesson/ watch a football match/play tennis/ go to the doctor/ surf the Internet/ go fishing/ relax at home
Complete these sentences • 1.I have to study A. a piano lesson at 3:00. • 2.You should B. my aunt. • 3.I have C. go to the doctor. • 4. I should help D. for a test. • 5. I have to visit E. my parents.
Daily Exercises 对于别人的邀请，你可能有不同的原因和理由表示谢绝，记住下面的原因和理由，并且翻译成汉语。 -- Can you come to my party? -- I’m sorry I can’t. I _________________. • 1. have to go to my guitar lesson • 2. have to go to play soccer • 3. have too much homework • 4. have to go to the doctor • 5. have to study for a test • 6. have a piano lesson • 7. have to go to my cousin’s birthday party • 8. am not feeling well
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 togo 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? No, I can’t. I must finish my homework. Would you like to come to mybirthday party? 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.
colorful weekend activities go skateboarding go to the cinema go shopping play basketball surf the Internet climb mountains go fishing go to a party
Weekend Activities go to the concert study for a test have a piano lesson go to a baseball game/ have baseball training visit his aunt go to the doctor
What do you usually do on weekends? What activities do you do on weekends? What weekend activities do you do? have to … 不得不 A: What do you have to do this weekend?B: I have to…
study for a test go to the doctor have a dancing lesson
Grammar focus 情态动词主要有：may/might, can/could, must, have to, shall/should, will/would, ought to, need, dare, used to。 现在我们来着重学习情态动词can以及 have to的用法。 其特征主要有：
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)。
can为情态动词, 在本单元中表示请求, 用于发出邀请，后跟动词原形。当同意接 受对方的邀请时, 常用Sure, I’d love to. / Certainly. /Of course.等来回答；若不接受, 常用Sorry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。
—Can you come to my birthday party tomorrow？ 明天你来参加我的生日聚会，好吗？ —Sorry, I can’t. I am going to visit my grandpa. 很抱歉，我来不了，我要去看我爷爷。
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. • Borrowers may not take out of the library more than two books at a time. • 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。 ①— May I use your phone? — Yes, you may./Yes, please. /No, you may not. /No, you mustn’t. /No, you’d better not. /I’m afraid not.
/I’m sorry. I’d rather you didn’t. ②—Can I go out and play, Mum? —Yes/Certainly, you can. /No, you can’t. ③ — Can you help me with this bag? —With pleasure./Sorry, I can’t. (3) 都可表示“可能性” 肯定句
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) This news may be true. (=might/could) (事实上的可能) Wang Wei can be really stubborn. (有时或偶然可能会)(=could)
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?
(4) can 还可表示“能力”、“能够” —You can swim, can’t you? —No, I can’t. I can’tpromise anything, but I’ll do what I can. Tickets can be bought from the Tourist Information Center.
2. might/could • 分别为may和can的一般过去时，分别表示过去的“许可”、“可能”和“能力” 、“能够”等。 The children asked whether they could/might go for a swim.(过去许可) I was afraid it might rain that afternoon. (过去可能) He asked if the news could be true. (过去可能)(Can the news be true?)
She said he could speak several languages. (过去能力) I couldn’t find her telephone number. (过去能够) (2) 都可表示现在或将来的“可能性”。语气没有may肯定。 ①—There’s someone at the door. —It could/might(=may) be George. (肯定句)
/It couldn’t (=can’t) be George.(否定句) /Could(=Can) it be George?(疑问句) ② According to the radio it could/might/ may rain tomorrow. ③ Lightning could (=can) be dangerous. (3) Might/Could I/we …? Could you …?
表示更委婉、更客气的请求。 ① —Might/Could I ask you one more question? —Yes, of course you may/might/can/ could. ② —Could you help me with these boxes? —Of course I can./With pleasure.
有时在陈述句中也表示更委婉、更客气的请求或邀请：有时在陈述句中也表示更委婉、更客气的请求或邀请： —I wonder if I could/might leave now. —I don’t suppose you could/might.
3. can/be able to • can= am/is/are able to = shall/will be able to ① No one can do it. =No one is able to do it. ②Can you come tonight? =Will you be able to come tonight?
(2) could 表示过去的技能、本能; was/ were able to 表示过去某一具体场合经过努力而做成某事。 ① I could swim when I was six. ② He started late, but he was able to catch the eight o’clock train. =…but he managed to catch … =…but he succeeded in catching …
But: ③Mr. Smith couldn’t/wasn’t able to see you because he’s got a bad cold. (3) be able to还有完成式和非谓语形式。 ① I’m sorry I haven’t been able to answer your letter. =I’m sorry for not being able to answer your letter. ② To be able to run is very important for a footballer.
4. 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。例如：
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。
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. (now)
You must get up at five tomorrow. We (will) have to get up early tomorrow —we’re going to Devon. (future) I had to leave early because I wasn’t feeling well. She said she must/had to see the manager. (past)
Task 总结 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