Learn German: Versuchst du, dein Deutsch zu verbessern? - Are you trying to improve your German?

In German, when you have an infinitive clause (a phrase ending with zu plus the dictionary form of a verb, like zu verbessern), you usually separate it from the main sentence with a comma. Here, it separates the main question Versuchst du from the action you are trying to do.

Where exactly does the zu go in sentences like this?

The word zu is placed immediately before the infinitive verb at the very end of the clause. So, instead of saying 'to improve your German' like in English, the German order is literally 'your German to improve' (dein Deutsch zu verbessern).

Why is it dein Deutsch and not deinen Deutsch?

The word for the German language is neuter (das Deutsch). Because it is the direct object (accusative case) in this sentence, the possessive word for 'your' stays as dein.

Why does the sentence start with Versuchst?

Because this is a yes/no question. In German, you form a yes/no question by moving the conjugated verb to the very front. Du versuchst means 'you try' or 'you are trying', so Versuchst du means 'Are you trying?'.