1. "You'll see" (with a sense of assurance or challenge): This is the most common meaning. It implies that the speaker is confident that something will happen and the listener will be surprised or convinced. For example:
* "Ne t'inquiète pas, tout va bien se passer. Tu vas voir." (Don't worry, everything will be fine. You'll see.)
* "Je sais que tu as des doutes, mais tu vas voir, ça va marcher." (I know you have doubts, but you'll see, it will work.)
2. "Wait and see" (with a sense of impatience or anticipation): This meaning is often used when the speaker is excited about something and wants the listener to wait for it to happen. For example:
* "J'ai une surprise pour toi. Tu vas voir !" (I have a surprise for you. Wait and see!)
* "Attends un peu, tu vas voir ce qui va se passer." (Wait a minute, you'll see what's going to happen.)
3. "You will understand" (with a sense of explanation or clarification): This meaning is less common but can be used when the speaker wants to explain something to the listener. For example:
* "Tu vas voir, c'est très simple." (You will see, it's very simple.)
* "Tu vas voir, ça a du sens quand tu y réfléchis." (You will understand, it makes sense when you think about it.)
The specific meaning of "tu vas voir" will depend on the context and the tone of voice used. It is important to pay attention to the situation to understand the intended meaning.