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1、Unit 9 Can you come to my party?,Section A,Can you swim?,No, I cant.,Can you dance?,Yes, I can.,Can you play soccer?,a birthday party,A: Can you come to my birthday party?,B: Sure, Id love to.,A: Can you come to my birthday party?,B: Sure, Id love to.,A: Can you come to my birthday party?,have a pia
2、no lesson/lesn/ (=class),B: Sorry, I cant. I have a piano lesson.,A: Can you come to my birthday party?,B: Sorry, I cant. I have to ,surf the Internet,Can you come to my party?,Sure, I love to.,Sorry, I cant .,I have to play soccer with my friends.,（一般跟在Sorry, I cant .的后面）,Why cant you come to the p
3、arty?,I have to study for a test.,I have a piano lesson.,I am going to the movies.,I have to have a piano lesson.,I have to study for a test.,I have to help my parents.,I have to go to the doctor.,I have to visit my aunt.,He has a concert.,Why cant he/she come to the party?,He is playing basketball.
4、,She has to visit her aunt.,1a. Match the words with the pictures.,1. Paper for an exam _ 2. help my parents _ 3. go to the doctor _ 4. meet my friend _ 5. have the flu _,Check the answers!,b,c,d,e,a,1b Listen and write the names (Tim, Kay, Anna and Wilson) next to the correct students in the pictur
5、e.,Tim,Anna,Kay,Wilson,1c. Group work,A: Can you come to my party on Saturday afternoon? B: Sure, Id love to. C: Sorry, I cant. I have to prepare for an exam. D: Im sorry, too. I must go to the doctor.,1C,You are the students in the picture. Student A, invite three students to your party. Students B
6、, C and D, give answers.,Can you come to my birthday party?,Sure, Id love to.,Im sorry, I cant. I have to go to the doctor.,Excuse me, can you come to my dancing party?,Certainly, Id love to.,Sorry, I cant. I have to study for a test.,How to accept an invitation,Yes, Id love/like to. Certainly, Id l
7、ove/like to. Sure, Id love/like to. Thanks for your invitation. Thanks for asking me.,How to decline an invitation,Im sorry, I cant. I have to Id love to, but I have to Sorry, I cant. Im going to the movies. Thanks for your invitation. Thank you for asking me.,1. can 的用法 （）表邀请。 若接受邀请，回答为： OK./All ri
8、ght./Sure./ Of course./Certainly./ Yes (Sure), Id love (like) to. 若不接受邀请，回答为： Sorry,cant.（+原因） e.g. Can you come to the party? Yes/Sure, Id love/like to. Sorry, I cant. I have to help my parents.,（）表能力 “能，会”否定句 cant 不能 e.g. He can swim, but I cant. How long can you stay under water? （）在否定句，疑问句中表示“不可
9、能”或“一定不” e.g. Can he come ?No, he cant come.（他会来吗？不，他不能来。）,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? （）表能力“能，会” 否定句 cant不能 He can swim,but I
10、cant. （）在否定句，疑问句中表示“不可能”或“一定不” Can he come ?No,he cant come.,can/be able to can= am/is/are able to = shall/will be able to No one can do it. =No one is able to do it. Can you come tonight? =Will you be able to come tonight?,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
11、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 cant 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 h
12、ave 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 dont 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 doesnt have to go to see the doctor.
13、,3. She had to have a piano lesson yesterday. Did she have to have a piano lesson yesterday? Yes, she did. She didnt have to have a piano lesson yesterday.,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”。,If one gets ill, h
14、ell 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 neednt (dont have to). You mustnt play football in the classroom.,I have to help my parents. 我不得不帮助我的父母。 help sb. with sth.或help sb. (to) do sth. 上一句我们可以说
15、： I have to help my parents with the housework . 或说I have to help my parents (to) do the housework .,2a. Listen and circle can or cant.,1. Jeff can/ cant go to the party. 2. Mary can/ cant go to the party. 3. May can/ cant go to the party. 4. Mei Ling can/ cant go to the party. 5. Paul can/ cant go
16、to the party.,2b. Listen again. Who cant go to the party? Why ? Complete the chart.,Jeff,Jeff might have to meet his friend on Saturday.,May,May has the flu.,Mei Ling has the flu.,Mei Ling,2c Look at the reasons in the chart in 2b. Write some more. Then, Student A, invite your partner to do something. Student B, say you can
