I can do something
I know how to do it. It is possible for me to do it.
I could do something
In the past I knew how to do it. It was possible for me to do it.
. Use the words can can't could couldn't to complete the sentences .
a. Bob swim but he when he was two years old..
b. Steve's younger sister surf, but he .
c. Last week it was sunny and we go swimming, but this week we .
c. Russel play the violin, but he play the piano.
d. Seaturtles swim, but they fly.
e. Tony cook now, but he before taking cooking classes.
f. Snails jump, but frogs .
g. Kimi dance with fans, but she dance
k. Mary was so busy that she accept the invitation to go out.
. Choose the correct options.
a. Before Asmau came to the USA, she can can't could couldn't speak English.
Now she can can't could couldn't understand everything.
b. Nancy can can't could couldn't
run a hundred miles when she was younger.
c. Brian was so tired last night that he can can't could couldn't sleep.
d. We had a great picnic last Sunday, but my friend Bob can can't could couldn't come.
e. I can can't could couldn't somersault now, but I can can't could couldn't when I was two.