Vi drejar och dekorerar vasen tillsammans.

Not exactly. Drejar comes from dreja, which is specifically to throw/shape clay on a potter’s wheel.

So in this sentence, Vi drejar och dekorerar vasen tillsammans has a pottery-related sense:

• drejar = shape it on the wheel
• dekorerar = decorate it

A more general verb like gör would just mean make, but drejar is much more specific.

Vasen is the definite singular form of vas.

• en vas = a vase
• vasen = the vase

In Swedish, definiteness is often added as an ending:

• en bok → boken
• en stol → stolen
• en vas → vasen

So vasen means that the speaker is talking about a specific vase, not just any vase.

Because both are in the present tense.

In Swedish, the present tense often ends in -r:

• dreja → drejar
• dekorera → dekorerar

The subject vi applies to both verbs:

• Vi drejar
• (vi) dekorerar

Swedish does not need to repeat vi before the second verb when the subject is the same.

Yes, in a normal full sentence, Swedish usually needs the subject to be stated.

• Vi drejar och dekorerar vasen tillsammans. = correct full sentence
• Drejar och dekorerar vasen tillsammans. = possible only in special contexts, like notes, headlines, or very informal speech

So for standard Swedish, vi is needed.

Tillsammans means together.

It tells you that we do the action jointly. It applies to the whole action:

• we shape the vase together
• we decorate the vase together

It is an adverb, and it often comes near the end of the sentence, as it does here.

Yes, sometimes. Swedish word order has some flexibility, especially with adverbs.

For example, these are possible:

• Vi drejar och dekorerar vasen tillsammans.
• Tillsammans drejar och dekorerar vi vasen.
• Vi drejar tillsammans och dekorerar vasen. (possible, but may sound like together mainly goes with the first verb)

The original version sounds natural and clear. Putting tillsammans at the end neatly applies it to the whole activity.

Because Swedish usually expresses the by attaching it to the noun as a suffix.

So instead of saying:

• the vase

Swedish says:

• vasen

This is one of the big differences from English. The definite ending is doing the job that the does in English.

Because these are finite verbs in the present tense, not infinitives.

Compare:

• att dreja = to throw/shape on the wheel
• att dekorera = to decorate

But in the sentence:

• Vi drejar och dekorerar vasen tillsammans.

the meaning is We shape and decorate the vase together, so Swedish uses the present forms drejar and dekorerar, not the infinitives.

In careful speech, och is pronounced roughly like okh with a soft, breathy sound at the end.

But in everyday speech, it is very often reduced to something more like:

• å
• or a very weak o

So this sentence may sound closer to:

• Vi drejar å dekorerar vasen tillsammans

This reduction is very common in spoken Swedish.

Yes. It follows standard Swedish main-clause word order:

• Vi = subject
• drejar och dekorerar = verbs
• vasen = object
• tillsammans = adverb

So the structure is:

Subject + verb(s) + object + adverb

That makes it a very natural, straightforward sentence.

Not in the most natural reading. The sentence suggests that we both shape the vase and decorate it.

Because the same subject vi controls both verbs, the usual interpretation is:

• we do the shaping
• and we do the decorating

If you wanted to clearly say that someone else made it and we only decorate it, Swedish would normally phrase that differently.

It is an en word:

• en vas
• vasen

That is why the definite form ends in -en, not -et.

Compare:

• en vas → vasen
• ett hus → huset

So learning the gender of the noun helps you form the definite form correctly.