Wir trinken Tee, danach gehen wir im Park spazieren.

In a normal German main clause, the conjugated verb must be in second position.

So in the second clause:

• danach = position 1
• gehen = position 2
• wir = comes after the verb

That is why German says:

• Danach gehen wir im Park spazieren.

and not:

• Danach wir gehen ...

This is a very common German word order pattern. When something other than the subject comes first, the verb still stays in second position.

Danach means after that or afterwards.

It refers back to the first action:

• Wir trinken Tee = We drink tea.
• danach = after that / afterwards
• gehen wir im Park spazieren = we go for a walk in the park

So danach connects the two actions in time.

The comma separates two main clauses:

1. Wir trinken Tee
2. danach gehen wir im Park spazieren

Each part could stand on its own as a full sentence. In German, commas are often used to separate clauses like this, especially when the writer wants a smooth connection between related actions.

You could also write them as two separate sentences:

• Wir trinken Tee. Danach gehen wir im Park spazieren.

That would also be correct.

Spazieren gehen is a very common German expression meaning to go for a walk.

Literally, it is something like:

• spazieren = walking / strolling
• gehen = to go

But together, spazieren gehen functions like one idea: to take a walk.

In this sentence:

• gehen is the conjugated verb
• spazieren stays at the end in the infinitive-like form

This is normal with a small group of expressions like:

• einkaufen gehen = to go shopping
• schwimmen gehen = to go swimming
• spazieren gehen = to go for a walk

Because im Park means in the park in the sense of location.

Here, the sentence describes where the walking happens:

• im Park spazieren gehen = to walk around in the park

German uses:

• dative for location: im Park
• accusative for movement toward a destination: in den Park

Compare:

• Wir gehen im Park spazieren. = We walk in the park.
• Wir gehen in den Park. = We go into/to the park.

So the sentence focuses on the place where the activity happens, not the destination.

Im is just the contracted form of in dem.

So:

• im Park = in dem Park

This contraction is extremely common in German and usually sounds more natural in everyday speech.

Other common contractions are:

• am = an dem
• zum = zu dem
• zur = zu der

German often leaves out the article with food and drinks when speaking in a general sense.

So:

• Wir trinken Tee = We drink tea / We’re drinking tea

This sounds natural and general, like English when we say We drink tea.

You could also say:

• Wir trinken einen Tee.

But that would usually mean something more specific, like we are having a tea or a cup of tea each, depending on context.

Yes. Both parts are in the present tense:

• Wir trinken Tee
• danach gehen wir im Park spazieren

German often uses the present tense for actions happening now, regularly, or in the near future, especially when the time is clear from context.

Because danach shows the sequence, the meaning is easy to understand without needing a future tense form.

Yes, absolutely.

• Wir trinken Tee, danach gehen wir im Park spazieren.
• Wir trinken Tee und danach gehen wir im Park spazieren.

Both are natural.

Adding und makes the connection more explicit: We drink tea, and afterwards we go for a walk in the park.

Without und, the sentence is still perfectly fine and often sounds a little more direct or streamlined.

Yes. German allows some flexibility, and changing the position changes the emphasis slightly.

For example:

• Danach gehen wir im Park spazieren.
  Emphasis on afterwards

• Wir gehen danach im Park spazieren.
  Also correct; danach is placed later in the clause

• Wir gehen im Park danach spazieren.
  Grammatically possible, but less natural in most contexts

So the original sentence is very natural because danach nicely introduces the second action.