课件27张PPT。 7B Unit 5 Grammar 1He can go swimming.
He couldn’t go swimming last year.He can fly a kite.
He couldn’t fly a kite last year.It can ride a bike.
It couldn’t ride a bike last year.She can row a boat.
She couldn’t row a boat last year.He can play tennis.
But he couldn’t play it last year.He can go skiing.
He couldn’t go skiing last year.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...Using “can”/ “could” to talk about ability
we 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.Grammare.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?Last year,Sandy _________.Now she _______. .... Simon...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 " possiblity When we want to express something is possible, we use can/could
can/could ---- present
(the possibility: can>could)2 "can " "could " ------- possibility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.
cancan notcould not couldcan notTake 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去年他不会划船,但现在他能划得
很好。2. 年轻人能为老年人做很多事情。 He couldn’t row a boat last year, but
now he can do it well.Young people can do many things
for the elderly.Translate the following sentences:3. 我的网球拍坏了,昨天我就不能打球了。4. 多么勇敢的年轻人啊!5. 太棒了。My tennis racket was broken, so I couldn’t play tennis yesterday. What a brave young man! How wonderful!Homework:1 Recite new phrases.
2 Learn to use"can/could " to show "ability"/ "possibility".
3 Pay attention to the sentence change.Goodbye!