人教版八年级上册英语Unit9SectionAGrammarFocus-3c课件

1、Unit 9Can you come to my party? Section A 3a-3cTo learn to use “Would you like to?” to make invitationsTo use the following structure to talk about obligations: I might have to/mustObjectivesHey, Anna, can you come to my birthday party on Saturday? Oh, Sam! I remember we went bike riding last fall w

2、hen ReviewCan you play chess with me tomorrow afternoon?Sure. Id love to.Im afraid not. I have the flu.Can Lily take a walk with us?No, she cant. She must prepare for the exam.Can you come to my party on Saturday?Sure, Id love to./Sorry, I must study for a math test.Can you go to the movies tomorrow

3、 night?Sure. That sounds great.Im afraid not. I have the flu.Can he go to the party?No, he cant. He has to help his parents.Can she go to the baseball game?No. shes not available. She must go to the doctor.Can they go to the movies?No, theyre not free. They might have to meet their friends.Grammar F

4、ocus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：情态动词 can 的基本用法情态动词 can 有一定的词义，但不能独立存在，它必须与动词原形一起构成谓语。情态动词 can 没有人称和数的变化。其具体用法如下:表示“能、会”指脑力或体力方面的“能力”。如: I can speak Japanese. 我会讲日语。 Frank can swim but I can

5、t. 佛兰克会游泳, 但我不会。2. 表示“可能”，常用于否定句或疑问句中，指某种可能性。例如： My cousin cant be in this city. He is in Korea now. 我堂兄不可能在这个城市里。他在韩国呢。 Can he come to our club today, please? 请问他今天能来我们俱乐部吗？3. 表示“可以”，常用于口语中，指许可或请求做某事 Can I ask you a question? 我可以问你一个问题吗？ You can bring something to eat. 你可以带些吃的。can为情态动词, 在本单元中表示请求，用

6、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, Id 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 cant. I am going to visit my grandpa. 很抱歉，我来不了，我要去看我爷爷。can/may(1)都可表示“许可” 。may用于较正式场合，can比较口语化。 You may/can sm

7、oke here. Borrowers may not take out of the library more than two books at a time. The policeman says you cant park here.(2) May/Can I/we? 表示征询对方许可。 Can you? 表请求。 May I use your phone? Yes, you may./Yes, please. /No, you may not. /No, you mustnt. /No, youd better not. /Im afraid not. /Im sorry. Id r

8、ather you didnt. Can I go out and play, Mum? Yes/Certainly, you can. /No, you cant. Can you help me with this bag? With pleasure./Sorry, I cant.(3) 都可表示“可能性”Mr. Reed looks pale. He may be ill. Mr. Read is in poor health.He can be ill at any time. This news may be true.(=might/could) Wang Wei can be

9、really stubborn.Mr. Reed looks pale. He may be ill. Mr. Read is in poor health.He can be ill at any time.This news may be true. (=might/could)Wang Wei can be really stubborn. (4) can 还可表示“能力”、“能够” You can swim, cant you? No, I cant. I cant promise anything, but Ill do what I can. Tickets can be boug

10、ht from the Tourist Information Center. have to 的用法1. have (has) to + 动词原形have (has) to 后面要用动词原形。当主语为第三人称单数时用 has to，当句子是过去时用 had to。 We have to go home now. 我们不得不现在就回家。 He has to work on Sunday. 他不得不在周日工作。 I had to do much housework last Sunday. 上周日我不得不做很多作业。2. have to 的否定句句型： 主语 +dont/didnt/doesnt

11、 wont +have to + 动词原形 You dont have to walk so fast. 你不必走那么快。 He will not have to buy a new coat next year. 明年他没必要买新外衣了。3. have to 的疑问句句型： Do/Does/Did/Will + 主语 + have to + 动词原形Did he have to ask the question?他非要问那个问题吗？Yes, he did. 是的。No, he didnt (have to). 不。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

12、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)。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。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

13、morning? 明天早上他必须早起吗？ I dont have to stay at home today. 今天我不必呆在家里。4. 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 dont like this TV set. I must buy a new one. This TV set doesnt work. We have to buy a new one. You must get up at five tomorrow. We (will) have to get up early tomorrow.I had t

14、o leave early because I wasnt feeling well.She said she must/had to see the manager. 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, Id love/like to.Im sorry, I cant. I have to/Im V-ing小结1. A: What are you going to do on S

15、aturday? B: Im not sure. I might _ 2. A: What are you planning to do after school? B: I dont know. _ watch TV on the weekend my cousin visit grandparents practice the violinpractice the violin.I might watch TV.Complete the answers with might and one of the phrases in the box.3a 3. A: When will you f

16、inish 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.1. Inviting: (can / play tennis) _ Accepting:_ Can you come to play tennis?Sure, that sounds great.Complete

17、 the sentences below. Use the words in brackets to help you.3b 2. Inviting: (would like to/ go to the movies) Reason: (might have to)_Refusing:_Would you like to go to the movies?Im afraid not. I have too much homework to do. 3. Inviting: (can/hang out with us tonight)Reason: (must) _Refusing: _ _Ca

18、n you hang out with us tonight? No, I cant. I must finish my homework.4. Inviting: (would like to / come to my birthday party) _Accepting:_Would you like to come to my birthday party?Sure, Id love to.Write down everything you have to do next week. Choose a day and time to have a party. Then invite c

19、lassmates to your party.A: Can you come to my party?B: When is it?A: Next week, on Thursday night.B: Im sorry. I have to study for a math test.3c What do you usually do on weekends? What activities do you do on weekends? have to 不得不A: What do you have to do this weekend?B: I have toWhat weekend acti

20、vities do you do?Have a talk about your weekendcolorful weekend activities go shopping go skateboardingplay soccergo to the cinemaHave a talkcolorful weekend activities play the pianoclimb mountains go to a partysurf the Internet 1. Jim play soccer with his friend this weekend, because he is very bu

21、sy. A. can B. cans C. cannt D. cant2. Henry his homework this afternoon. A. have to do B. have to doing C. has to do D. has to doing3. ? Its October the 14th. A. When is today B. Whats today C. What time is today D. What day is todayDCI. 选择填空。DExercises1. 星期六你能来我的聚会吗？ _ you _ to my party on Saturday

22、?2. 当然，我乐意去。Sure, _ _ _. 3. 对不起，我必须为数学考试而学习。 Sorry, I _ _ _ a math test. 4. 明天晚上你能去看电影吗？ _ you _ to the movies _night?Id love toCan comemust study forCan goII. 根据课本内容, 完成下列句子。 tomorrow5. 当然可以，听起来很棒。 _, that _ _.6. 恐怕不行，我得了流感。 Im _ not. I have the _. 7. 他能参加聚会吗？ _ he _ to the party?8. 不能，他得帮助他的父母。 No, he _. He _ to help his parents. 9. 她能参加棒球比赛吗？ _ she go to the baseball _? Sure sounds greatafraid flu Can game Can gocant has10. 不，她没有空。她必须去看医生。 No, shes _ _. She _ _ to the _. 11. 他们能去看电影吗？ _ they _ to the _?12. 不，他们没有空。他们可能必须去见朋友。 No, theyr