What does "do you know" mean in English for Spanish?

In English for Spanish, "do you know" means:

¿sabes?, ¿sabe usted?

Listen to "do you know": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a phrase that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 3, Level 3, Scene 9
• English for Spanish 3, Level 3, Scene 11