German phrase
Was ist Ihr Hauptziel mit ~?
Meaning
What is your main goal with ___
When to use it
It asks for the main goal. This formal wording confirms someone's aims for a specific activity.
Example dialogue
Was ist Ihr Hauptziel mit diesem Deutschkurs?
What is your main goal with this German course?
Ich möchte meine Sprachkenntnisse verbessern.
I would like to improve my language skills.