I will be able to swim soon.
Could we have a table near the window, please?
You could guess by the look of his face.
Could you explain to me what a point is?
The distance which his eye could embrace was waste.
Could you please give a window seat to my wife?
Simple / Perfect Infinitive Can / Could
He could not rest till he got his wish.
One could see it with half an eye.
I could drink the sea dry.
It was wonderful that we could see each other.
I could not sleep for the heat.
I could swim when I was 10.
I could not stick the envelope.
It could become extremely serious.
I could fly for joy.
Nobody could get a blind bit of sense out of him.
He was not in cash, and could not send the five pounds.
Simple / Perfect Infinitive
Daddy undid my hood so I could have a better view.
Simple Infinitive Will be able to
Could you explain your policy to me?
You could easily lose yourself in the book.
Could you explain that to me again? — Of course.
You could have helped us.
Be careful, you could end up by getting hurt.