In this advanced English grammar lesson, learn the difference between "can" and "be able to". Learn when and how to use "can" and "be able to" correctly and naturally so you can sound fluent and natural in English. Both "can" and "be able to" have the same meaning. They're used to talk about ability. But "can" is used to talk about general ability, and "be able to" is used to talk about specific ability. Their sentence structure is also difference between "can" is a modal verb and "be able to" i