文档介绍：Unit 7 Abilities
Grammar
It can ride a bike.
It couldn’t ride a bike last year.
She ______ row a boat.
She ________ row a boat last year.
can
couldn’t
play badminton
now ...can...
...could not ... last year.
swim
now ...can...
...could not ... in 2012.
fly a kite/ kites
now ...can...
...could not ... last week.
can
could
用于一般现在与将来时
用于一般过去时
归纳小结:
can/could表示能力(意为“能,会”)
Take turns to ask and answer questions using “can” or “could". Try to make dialogues in pairs.
you speak English ?
you play the piano last year?
you cook?
you use puter when you were 3?
you ride a bicycle when you were very young?
you understand English TV programmers in 2000?
Can
Could
Can
Could
Could
Could
Using "can/could"
用 can/could/may表示委婉的请求
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./Yes, of course.
---No, you can’t./Sorry, I'm using now.
2. ---Could I smoke here?
---Yes, you can./Yes, of course.
---Sorry, I'm afraid you can’t.
3. ---May I use your mobile phone?
---Yes, you may. /Yes, of course.
---No, you can’t.
mustn’t