Grammar,Unit 7 Abilities,学习目标,1. 了解can, could, may的用法 2. 会使用can, could, may 3. 会使用感叹句,can,could,用于一般现在与将来时,用于一般过去时,can/could表示能力(意为“能,会”),can 1. 能（表能力）2.可以（许可）3.可能（表可能性） could 1.can的过去式2.可能,许可（比can更委婉，可能性更 小）may 1.许可，可能2.比can，could更正式、客气,can,语气越来越委婉 可能性越来越来小,could,may,can, could 和may都可以表示许可，意为“可以”； could 比can更有礼貌、更委婉地提出请求、想法（此时的could不表示过去，回答时肯定用can, 否定用cant）。 may是正式场合，用于对长辈、老师或陌生人。,I can _ _ _.,ride a bike,Look and say,What can I do?,I can _ _.,play basketball,What can I do?,He _ _ the cello (大提琴).,can play,What can he do?,I can _ _ every day.,do exercise,What can I do?,_ _ fly a kite on the beach.,What _ I do?,can,I can,He can swim.,He could swim last year.,He can fly a kite.,He could fly a kite last year.,He can ride a bike.,He could ride a bike last year.,She can row a boat.,She could row a boat last year.,He can play tennis.,But he could play it last year.,She can cook. She could cook last year.,句型,肯定句：主语+ can /could + 动词原形 否定句： 主语+ can/ could not +动词原形 疑问句：can/ could+主语 +动词原形？Yes, sb can/could.No, sb cant/couldnt.,如果表达不能做某事，可以在can后直 接加not，成为cannot，也可以缩写为 cant。 如：I cannot (cant) play football. can没有人称和数的变化。不论表示 谁能(不能)做某事，都是用can (not)。,I can play the guitar but,Tom _ chess _ he _ it very well.,can play,but,cant play,I cant play it very well.,否定句,He _ but he _.,She _ _ she _.,can speak English,cant speak it very well,can paint,but,cant paint very well,如果是询问某人能不能做某事，则要使用can的疑问形式，即将can提至句首。如： Can you speak Chinese? Yes, I can. / No, I cant.,一般疑问句,A: Can she play the violin? B: _, she can.,A: _ she _? B: Yes, _.,Can,dance,she can,Yes,A: _ he play the drums? B: No, _, but he can play the guitar.,Can,he cant,A: _ she play the piano? B: _, but she _.,Can,can dance,No, she cant,It can ride a bike. It couldnt ride a bike last year.,She _ row a boat. She _ row a boat last year.,can,couldnt,I _ ride a bike now. I _ ride a bike 2 years ago .,could not/couldnt,can,Take turns to ask and answer questions using “can” or “could”. Try to make dialogues in pairs. 1._ you speak English ? 2._ you play the piano last year? 3._ you cook? 4._ you use a computer when you were 3? 5._ you ride a bicycle when you were very young? 6._ you understand English TV programmes in 2000?,Can,Could,Can,Could,Could,Could,Make dialogues using the following pattern.,S1: Can you ride a bike? S2: Yes, I can. / No, I cant. S1: Could you ride a bike five years ago? S2: Yes, I could. / No, I couldnt.,Can he/she fly a kite? Yes, he/she can. No, he/she cannot/cant.,其构成是： 肯定句: 主 + can + 动词原形. 否定句: 主 + cant + 动词原形. 一般疑问句: Can + 主 + 动词原形？ 肯定回答: 否定回答: 特殊疑问句: 特殊疑问词 + 一般疑问句？,Yes, 主 + can.,No, 主 + cant.,现在我们来总结一下：,e.g. I can dance. 我会跳舞。 I cant dance. 我不会跳舞。 Can you dance? 你会跳舞吗？What can you do? 你会干什么？,Yes, I can. 是的，我会。,No, I cant. 不，我不会。,Can you understand?,“can” “could” “may” to ask for permission. “Could” sounds more polite than “can”. May is formal.,1. -Can I borrow your bike, Millie? -Yes, you can. Here you are. 2. -Could I smoke here? -Sorry, Im afraid you cant. 3. -May I use your mobile phone? -Of course you may.,学海拾贝,1. 把钥匙忘在教室了 2. 顺便问一下 3. 没问题 4.看透墙 5. 用他的眼睛烧东西 6. 听得很远 7. 多奇怪啊！ 8. 和光一样快 9. 多有趣的一个主意! 10. 多优美的音乐!,left the key in the classroom,by the way,no problem,see through walls,burn things with his eyes,hear things far away,How strange!,run as fast as light,What an interesting idea!,What nice music!,What a big pencil box it is!How big the pencil box is!,What/how感叹句的用法,What beautiful flowers they are! How beautiful the flowers are!,The flowers are beautiful.What beautiful flowers they are！How beautiful the flowers are!,The cat is lovely.What a lovely cat it is！How lovely the cat is!,pretty,How pretty the little girl is!,What a pretty girl she is！,How tall the man is!What a tall man (he is)!,Work out the rules:,用what (a/an)或how填空：,1._ exciting music it is! 2. _ happily they are playing! 3. _ amazing film they saw! 4. _ lovely animals they are! 5. _ amazing match it is!,What,How,What an,What,What an,What 与How 大转换,1. What a pretty girl she is! _ _ the girl is! 2. How difficult the questions are! _ _ _ they are！ 3. How big the factory is! _ _ big factory _ _!,How pretty,What difficult questions,What a,it is,4.What a clever boy! _ _ the boy _! 5. How tall the trees are! _ tall trees _ _! 6. What interesting books they are! _ _ the books _! 7. How funny the girl is! _ a funny girl she is!,How clever,are,What,How interesting,What,they are,is,8. How old the man is! _ _ old man _ _! 9. What nice books they are! _ _ the books _! 10. How amazing the building is! _ _amazing building _ _!,