Can, Could, Be able to
Bài học này chúng ta sẽ ôn lại hai động từ khuyết thiếu và ‘be able to’, chúng đều
có chức năng như nhau.
Can
Được dùng
nói về có thể. ‘Can you meet me at 5?’
Được dùng để
nói về khả năng. ‘I can ride a bike’.
Được dùng cho đề nghị hay yêu cầu không trang trọng.
‘Can you bring me my
jumper?’
Dạng phủ định
can’t và cannot.
Could
Được dùng
nói về khả năng trong quá khứ. ‘When I was a child I could do
handstands’.
Được dùng cho đề nghị trang trọng.
‘Could you fax me that document by
Tuesday?’
Dạng phủ định:
couldn’t.
Be able to
Đôi khi dùng thay
can và could
Có thể được dùng với tất cả các thì.
‘I will be able to see you next week’.
Được dùng để nói về khả năng
‘Are you able to write formal letters?’
Bây giờ chúng ta thử làm một bài cơ bản xem bạn có thể làm đúng được bao
nhiêu câu.
• 1. ___ you hear the fireworks from your house last night?
Could
Can't
Can
• 2. Do you think you ___ write that report by Tuesday? I know you’re
very busy.
will be able to
have been able to
couldn't
• 3. I ___ touch my toes. See!
can
will be able to
could
• 4. I ___ spend another moment in that restaurant. It was too noisy.
couldn't
can't
have been able to
• 5. I ___ never seem to get the temperature right.
can't
to be able to
can
• 6. ___ play professional tennis, you must be extremely fit.
To be able to
Will you be able to
Couldn’t
• 7. ___ you play an instrument?
Couldn't
Able to
Can
• 8. I'm afraid I ___ attend the meeting, I’m on business in Japan.
will be able to
won’t be able to
can
• 9. ___ you have brought it to me at work?
Couldn't
Cannot
Will be able to
• 10. They ___ save the men from the sinking ship.
was able to
could to
were able to