Wij fietsen vaak naar het centrum.

We often bike to the centre.

Breakdown of Wij fietsen vaak naar het centrum.

• wij: we
• naar: to
• fietsen: to bike
• vaak: often
• het centrum: the centre

Questions & Answers about Wij fietsen vaak naar het centrum.

Why is the verb fietsen in the form fietsen here and not fietst?

In Dutch, for plural subjects (wij, jullie, zij) the present‐tense verb ends in -en, which is exactly the infinitive form. You only add -t for singular jij (and hij/zij):

• ik fiets
• jij/hij fietst
• wij/jullie/zij fietsen

Why is the adverb vaak placed before naar het centrum and not after it?

Dutch typically orders adverbials in this hierarchy: time – frequency – manner – place. Here vaak (a frequency adverb) comes before naar het centrum (a place‐phrase). So you get:
Subject + Verb + Frequency + Place

Can I use we instead of wij in this sentence?

Yes. We is the unstressed (clitic) form of wij and is extremely common in informal Dutch speech and writing. Wij is the full form and is used for emphasis or in more formal contexts. The meaning stays the same.

Why is there an article het before centrum? Why not de centrum or no article at all?

Centrum is a neuter singular noun (borrowed from Latin), so it takes the definite article het in Dutch. You cannot drop the article here because you’re talking about a specific place. If you meant “a center” in general, you’d say een centrum.

Why do we need the preposition naar? What if I wrote Wij fietsen vaak het centrum?

Naar expresses movement toward a destination. Without a preposition (“Wij fietsen vaak het centrum”) the sentence is ungrammatical—you need naar (or in colloquial speech sometimes ’t as in naar ’t centrum) to show direction: “to the center.”

Could I begin the sentence with vaak for emphasis? How would that change word order?

Yes. Dutch main clauses follow the V2 rule (finite verb in 2nd position). If you front vaak, the verb must follow it directly:
Vaak fietsen wij naar het centrum.
You could also front the place for emphasis:
Naar het centrum fietsen wij vaak.
Both are correct but shift what you emphasize (frequency vs. destination).