Memnuniyetle :)

teşekkur ederim, Cihan :)

Do you speak English ? (İngilizce konuşuyor musun ?) Do you know English ? (İngilizce biliyor musun ?) Do you know to speak English ? (İngilizce konuşmayı biliyor musun ?)

Of course there is difference between "Do you speak english" and "do you know how to speak english" :)) Be careful, I didn't ask about it. I've just asked about exact meaning this turkish expression, because there's a lot of various translations. It doesn't matter "do you speak english" or "do you know english", when you ask somebody, but there's a huge difference between "speak" and "know" at all. Selamlar:)

What is the difference between Do you speak english and do you know how to speak english? That's why, in my opinion does not matter. Yet, I would use "Do you speak english ?"