past ability

present ability

permission

future possibility

present possibility

future ability

past possibility

complaint

She could have told you he was her boyfriend's father!

The match could be on the other channel. Why don't you look?

Could I take 5 minutes of your time at the end?

If you are late back from work, I could leave it in the oven.

Shiela's in the office - she could do it now.

She could speak French pretty well, I recall.

He could well be late - he usually is.

He could have got out through the bathroom window.