In this English lesson you will learn how we use can, able to, managed to in English. Can/could for general ability If you have the ability to do something we use 'can' and 'could'. Examples: I can/can't run fast. I could/couldn't run fast when I was five. Can has no infinitive or past participle so we need to use 'be able to' for: the future - I will … [Read more...] about Using Can, able to, managed to in English