So, in English, we tend to use phrases like "Do you speak English?" when what we're really talking about is ability -- i.e. "Can you speak English?"
My question is, does this work in Japanese? The impression I get is no, but I want to make sure. Like, if someone were to ask "日本語しゃべるの?", it wouldn't be "Do you speak Japanese?" as in "Can you speak Japanese?", it would be "Do you speak Japanese?" as in "Do you ever speak Japanese?", or possibly "Are you going to speak Japanese?", right? To ask about ability, I have to actually use a potential form of the verb -- しゃべれる. Right?