Ons gaan môre aan.

Because the full verb is aangaan, which is a separable verb in Afrikaans.

In a normal main clause:

• the finite verb goes to the usual verb position near the beginning,
• and the separable part moves to the end.

So you get:

• Ons gaan môre aan.

But in a subordinate clause, it is usually written together:

• Ek dink dat ons môre aangaan.

This is very similar to separable verbs in Dutch and a bit like phrasal verbs in English, except the split is more systematic.

Not really. In this sentence, gaan is part of the full verb aangaan.

A learner may expect gaan to mean going to and then look for another main verb, but here the main verb is already present: it is just split into gaan ... aan.

The future idea comes mainly from môre because Afrikaans often uses a present-tense form plus a time word to talk about the future.

Not necessarily. In this sentence, aan is best understood as part of the verb aangaan, not as a separate word you should translate by itself.

A very common mistake is trying to translate each piece literally:

• gaan = go
• aan = on

That often does not give natural English. With separable verbs, it is better to learn the whole verb as one unit:

• aangaan = the meaning already given in your lesson

So here, aan is a verb particle, not just a simple preposition.

Because Afrikaans verbs usually do not change according to the subject the way English verbs sometimes do.

For example:

• ek gaan
• jy gaan
• ons gaan
• hulle gaan

The form gaan stays the same. This is one of the things that makes Afrikaans grammar simpler than English in some areas.

Because môre is a time adverb, and aan has to stay at the end as the separable part of the verb.

So the basic order is:

• Ons
  • gaan
    • môre
      • aan

That is a normal Afrikaans sentence pattern.

You can also move môre to the front for emphasis:

• Môre gaan ons aan.

But if you do that, the verb still stays in second position.

Yes. That is grammatical.

The difference is mainly emphasis:

• Ons gaan môre aan. = neutral statement
• Môre gaan ons aan. = puts more focus on tomorrow

Afrikaans is a verb-second language in main clauses, so when another element comes first, the finite verb still comes second.

You would usually say:

• Ons gaan nie môre aan nie.

Afrikaans normally uses double nie in ordinary negation:

• the first nie appears after the finite verb,
• the second nie comes at the end of the clause.

That double negative pattern is one of the most important basic features of Afrikaans.

In a dat-clause, the separable verb is normally written together again:

• Ek weet dat ons môre aangaan.

So compare:

• Main clause: Ons gaan môre aan.
• Subordinate clause: ... dat ons môre aangaan.

This is a very useful pattern to learn early, because separable verbs appear often in Afrikaans.

Usually, yes, but context matters.

By itself in a sentence like this, môre means tomorrow.

But you also see it in greetings such as:

• Goeie môre = good morning

So the same word can be understood differently depending on the situation. In Ons gaan môre aan, it is clearly the time word tomorrow.