Learn Dutch: Wij wandelen dagelijks in het park.

In Dutch, there is a general rule that time comes before place. Adverbs of frequency and time, like dagelijks (daily), usually sit right after the conjugated verb. So, you put the time (dagelijks) before the location (in het park).

Can I put dagelijks at the start of the sentence for emphasis?

Yes, but it changes the word order! If you start with an adverb of frequency, the verb must stay in the second position. This causes inversion, meaning the subject moves right after the verb: Dagelijks wandelen wij in het park.

Dagelijks clearly comes from dag (day). Is this a common pattern for time words?

Yes! Adding the suffix -elijks turns a time noun into a frequency adverb. You will also see this with week (week) becoming wekelijks (weekly), maand (month) becoming maandelijks (monthly), and jaar (year) becoming jaarlijks (yearly).

I have also learned the word lopen for walking. Why use wandelen here?

While both translate to walking, wandelen specifically means going for a leisurely stroll or a hike, which fits perfectly with an activity in a park. Lopen refers to the general physical motion of walking, or simply walking to get from A to B.