How
From Creolista!
How is a wh- word, which means that it marks something that is unknown. It is used when you want to know the method, the manner, or the way something is done, or is going.
- How are you doing? comment vas-tu?
- How do you do? (comment allez-vous? <-- used only when you meet someone for the first time ever)
- How is it going? ((comment) ça va?)