Subject+Can+Verb+Object

*I can drive a car, but I can't fly an airplane.
*A cat can climb a tree, but a dog can't.
*Babies can't talk.
*Birds can fly
*Can an elephant fly?
*Can you give me your phone number?
*Can't you run faster?
*Can't this car go faster?
*I can ride a bicycle.
*Jack can talk French.
*The dog can dig a hole.
*My little brother can't reach the top shelf of the bookcase.
*I can help you with your maths homework.
*I can pick you up from the airport because I have a car.
*Can I make a call with your phone?
*Can my friend come over after school?
*All students can go outside after the test.
*You can't play with your friend after school.

Could

Subject+Could+Verb+Object

*He couldn't talk when he was 15 months old.
*I could run faster two years ago.
*That couldn't be true!
*That car couldn't be his!
*I believe it was an accident.
*Could you spek english 10 years ago?