What's the difference between "he's going to start walking" and "he's going to walk"? Are there any shades of meaning here?
Consider the following: He will be able to do it. He can do it. They mean the same thing, right? Can "can" replace "will be able to" in any sentence? What is the difference, if anything? ...
Possible Duplicate: 'shall' and 'will' Is there any difference at all between these two sentences? What will we talk about? What shall we talk about?