七年级英语下册 Unit 7 Abilities GrammarI课件 （新版）牛津版.ppt

7B UNIT 7 GRAMMAR 1DO YOU KNOW THESE SPORTS?I could not row a boat at five. Now I can .row a boat ride a bike...could not ... now ...can...play badminton...could not ... now ...can... swim/ have a swim...could not ... now ...can...fly a kite/ kites...could not ... now ...can...A.Using “can”/ “could” to talk about abilitywe use “can” to say that we are able to do something now.we use “could” to say that we were able to do something in the past.e.g. I can (cannot /can’t /can not ) swim. What about you? He could (couldn’t /could not) dance in the past. What about you ? What can they do ?/ What could they not do?SandySimonMillie Daniel&PeterAmylast year×××××this year√√√√√Last year, Sandy _________.Now she _______. .... Simon...SandySimonMillie Daniel&PeterAmylast year×××××this year√√√√√Ask and answer the questionsCan Sandy row a boat now? Yes, she canCould Sandy row a boat last year? No, she couldn't. 2 "can " "could " possiblityWhen we want to express something is possible, we use can/couldcan/could ---- present (the possibility: can>could)2 "can " "could " ------- possibility注意注意•当委婉表达￿“请求”￿“要求”时，用could。

￿而回答时，肯定用can.否定语气一般要婉转，有时可说明不能的原因如：--Could you send this letter for me?--Yes, I can./sorry, I’m busy now.Exercises: Fill in them with"could/could not ""can/ can not". 1 It is snowing in Canada. We ______go skiing there.2 The swimming pool does not open today. We ________ go swimming.3 We ___________ fly kites yesterday because it rained.4 We _______ play badminton last Friday because we had our badminton rackets.5 We ________ play football because Simon forget to bring a football.cancan notcould not couldcan notTake turns to ask and answer questions using “can” or “could”.Try to make dialogues in pairs.1.____ you speak Japanese ?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 younger?6._______ you understand English TV programmes in 2000?CanCouldCanCouldCouldCouldHomework:1 Recite new phrases.2 Learn to use "can/could " to show "ability"/ "possibility".3 Pay attention to the sentence change.。