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1、Period2 Section A (GF-3c),Unit 9 Can you come to my party?,学习目标,Key words & phrases: invite，accept，refuse，study for a math test， on the weekend，practice the violin Key sentences: 1.Can you come to my party on Saturday? Sure，Id love to. /Sorry，I must study for a math test. 2.Can she go to the basebal
2、l game? No，shes not available. She must go to the doctor. Make, accept and decline invitations.,A: Can you come to my birthday party? B: Sure, Id love to.,birthday party,Review,A: Can you go to the concert? B: Im sorry, I cant. I have to prepare for an exam.,go to the concert,prepare for an exam,A:
3、Can you go to the movies? B: Im sorry, I cant. I have to go to the doctor. A: Can he go to the movies? B: No, he cant. He has to go to the doctor.,go to movies,go to the doctor,A: Can you go to the zoo? B: Sorry, I cant. I have to help my parents. A: Can he go to the zoo? B: No, he cant. He has to h
4、elp his parents.,go to the zoo,help my parents,A: Can you play computer games with me? B: Sorry, I cant. I have to go to the baseball game. A: Can he play computer games with me? B: No, he cant. He has to go to the baseball game.,play computer games,go to the baseball game,A: Can you play soccer wit
5、h me? B: Sorry, I cant. I have to watch TV. A: Can she play soccer? B: No, she cant. She has to watch TV.,play soccer,watch TV,Accept (接受) invitations:,Sure / Yes / Of course, Id love to. Certainly, Id like to.,Decline (拒绝) invitations:,Im sorry, I cant. I have to look after my grandmother. I have t
6、o study for a math test. I am going shopping with my friend. ,Can you .? 意为“你能吗？”，可用于邀请别人或委婉地请求某人去做某事。其肯定回答常用 Sure, Id love / like to. ，否定回答常用 Im sorry, I cant. / Sorry, I cant. 等。如： - Can you go to the baseball game? 你能去参加棒球比赛吗？ - Im sorry, I cant. 对不起，我不能。,Explanation,Presentation,情态动词have to与其他的情
7、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”。 You / He should study hard. 你/他应该好好学习。 He has to study hard. 他不得不好好学习。,have to 的用法,（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 , does或 di
8、d 才可能完成其疑问、否定句。,试将下面三句话分别写成 1）一般疑问句，并作肯定回答。 2）否定句。 a. 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. b. 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. c. She
9、had to study for a math test yesterday. Did she have to study for a math yesterday? Yes, she did. She didnt have to study for a math yesterday.,have to 与 must,二者都有“必须”之意，但 have to 表示“客观上的需要”，有人称和时态的变化，否定形式为 dont / doesnt / didnt have to (没必要)；must 表示“主观上的要求”，无人称和时态的变化，否定回答一般用 neednt 或 dont have to (
10、不必)。mustnt 表示“禁止”。如： We have to wear warm clothes in winter. 冬天我们不得不穿上暖和的衣服。(客观需要) I must finish my homework first before I watch TV. 看电视前我必须先完成作业。(主观要求),比一比,You dont have to tell him about it. 你不一定要把此事告诉他。 You mustnt tell him about it. 你一定不要把这件事告诉他。 Must I be home before eight oclock? 8点之前我必须回家吗？ Y
11、es, you must. / No, you neednt. / No, you dont have to. 是的，必须回家。/不，不必。,watch TV on the weekend my cousin visit grandparents,Complete the answers with might and one of the phrases in the box.,3a,1. A: What are you going to do on Saturday? B: Im not sure. I might _ 2. A: What are you planning to do af
12、ter school? B: I dont 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. Are you free to come to my place on Saturday? B: _ _,watch TV on the weekend my cousin visit grandparents,I dont know. I
13、 might finish it on weekend.,Im not sure. I might go with my cousin.,Im 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: _ Re
14、ason: _ (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 cant.,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?,Sorry, Im not free.,I must study for a test.,Would you like to come to my birthday party?,Sure. Id love to.,invite v. 邀请 The man invited my father t
