Can, Know How To, Be Able To Can – present affirmative
Can’t – present negative
Can – present question & short answer
Magnolia can whistle. Magnolia puede silbar.
Diane can’t whistle. Diane no puede silbar
Can Enrique whistle? Yes, he can. No, he can’t. Puede Enrique silbar?
know/s how to – pres. affirm.
don’t/doesn’t know how to – pres. neg.
Do/Does …know how to – pres. question & short answer.
Does Enrique know how to whistle? Yes, he does. No, he doesn’t. Sabe Enrique como silbar?
Magnolia knows how to whistle. Magnolia sabe cómo silbar.
Diane doesn’t know how to whistle. Diane bo sabe cómo silbar.
am/is/are able to – present affirm.
am/is/are not able to – pres. neg
Am/is/are …able to – pres. question & short answer.
Magnolia is able to whistle. Magnolia es capaz de silbar.
Diane isn’t able to whistle. Diane no es capaz de silbar.
Is Enrique able to whistle? Yes, he is. No, he isn’t. Es capaz Enrique de silbar?
Could – past affirmative
Couldn’t – past negative
Could – past question & short answer
Magnolia could whistle when she was a child. Magnolia podía silbar cuando ella era niña.
Diane couldn’t whistle when she was a child. Diane no podía silbar cuando ella era niña.
Could Enrique whistle when he was a child? Yes, he could. No, he couldn’t. Podía Enrique de silbar cuando él era niño?
knew how to – past affirm.
didn’t know how to – past neg.
Did…know how to – past question & short answer
Magnolia knew how to whistle when she was a child. Magnolia sabía cómo silbar cuando ella era niña.
Diane didn’t know how to whistle when she was a child. Diane no sabía cómo silbar cuando ella era niña.
Did Enrique know how to whistle when he was a child? Yes, he did. No, he didn’t. Sabía Enrique silbar cuando él era niño?
was/were able to – past affirm.
Magnolia was able to whistle when she was a child. Magnolia no de silbar cuando ella era niña.
was/were not able to – past neg
Was/were …able to – past question & short answer.
Diane wasn’t able to whistle when she was a child. Diane no era capaz de silbar cuando ella era niña.
Was Enrique able to whistle when he was a child? Yes, he was. No, he wasn’t. Era Enrique capaz de silbar cuando él era niño?