Learn Dutch: Ga je vanavond mee? - Are you coming along tonight?

The full dictionary verb is meegaan (to go along / to come along). It is a separable verb. When you use it in a present tense question or basic sentence, the verb splits: the main part (gaan, conjugated here as ga) takes the normal verb spot, while the prefix (mee) breaks off and gets pushed to the very end of the sentence.

Why is it ga je instead of gaat je?

In a statement, you say je gaat (you go). But to make it a question, you swap the verb and the subject. Whenever you do this with je or jij (you), the verb drops its -t ending. That is why je gaat becomes the question ga je.

Why does the translation say "coming along" when gaan means "to go"?

The separable verb meegaan literally translates to "to go with" or "to go along". While an English speaker usually says "Are you coming along?" or "Are you coming with us?", a Dutch speaker uses gaan (to go). Ga je mee? is the standard, natural way to ask someone if they are joining you.

Is vanavond a compound word?