HW ex. 3 p. 147

1. CAN / COULD
can = osaa, kykenee, saa, voi
He can read Arabic.
He can speak Arabic.
Can he ski?
He can't / cannot come to my party.
COULD = 1. imperfekti
Axel could read at the age of four.
2. voisi: Could you, please, close the door?
II konditionaali: Marc could have come if he had wanted to. = Marc olisi voinut tulla, jos hän olisi halunnut.

KORVAAVA MUOTO: be able to
1. preesens
I am able to sing.  I can sing.
2. imperfekti
I was able to sing at her funeral.  I could sing at the age of four.   
3. perfekti
I have always been able to sing.
4. pluskvamperfekti
I had been able to sing.
5. I futuuri
I will be able to sing at my uncle's funeral next Saturday. Can you sing tomorrow?
6. I konditionaali
I would be able to sing at her funeral.  I could sing if they asked me to.
7. II konditionaali
I would have been able to sing.  I could have sung if they had asked me to.

KORVAAVIA MUOTOJA:
1. be able to: When will you be able to come over?
2. know how to: I never knew how to sing in tune.
3. be unable to: Marc was unable to help us.
4. manage to: The firefighter managed to rescue the cat.
5. it's possible for s-b to do s-g: Is it possible for us to know the future?
6. it's impossible for s-b to do s-g:
It's impossible for me to say what will happen.
NB!
Matti can't be sick because I just saw him and he was (as) fit as a fiddle / as right as rain.
= Matti ei voi mitenkään olla sairas, koska näin hänet juuri ja hän oli terve kuin pukki.