Comment ca va? x
When you want to ask about someone's health in French you would say Comment allez-vous.
Comment allez-vous is the standard phrase you would use when you want to ask someone how they are in French. This phrase is most commonly used when you are talking to strangers, elders, or someone in a formal setting. Comment ca va is a far less formal way to ask how someone is doing in French. You would reserve this phrase for friends and family members.
Nationality translated into French is: la nationalité To ask someone their nationality you would say: Quelle est votre nationalité? This means: What is your nationality?
qu'est ce que tu aimes faire ?
you can tell someones nationality by their references usually americans look mixed. for example if someone is german and french they would look mixed german and french.
parlez-vous français ? means "do you speak french?"
To ask someone formally what their name is in French, you would say, "Comment vous appelez-vous ?" This phrase uses the formal "vous" to show respect. It's a polite way to inquire about someone's name in a formal setting.
Combien mesures-tu?
ou loge tu
To ask someone how to spell their name in French, you can say "Comment tu épelles ton nom ?" which translates to "How do you spell your name?"
I would think you would ask someone older then you out the same way that you'd ask anyone else out.
"Comment t'appelles-tu ?" or "comment vous appelez-vous ?" are the questions to ask someone their name.