Ens mudem demà.

Here ens is the 1st person plural reflexive pronoun: ourselves / us.

So ens mudem literally works like we move ourselves, but in natural English it simply means we’re moving or we’re moving house.

With the verb mudar-se, Catalan normally uses this pronoun:

• em mudo = I’m moving
• et mudes = you’re moving
• es muda = he/she is moving
• ens mudem = we’re moving

Because the usual Catalan verb for to move house is mudar-se, which is a pronominal/reflexive verb.

So:

• mudar by itself can mean to change or to move something
• mudar-se means to move home / relocate

That means ens is not optional here.
Ens mudem is correct; mudem on its own would sound incomplete or would suggest a different meaning.

Mudem is the present indicative, first person plural, from mudar-se.

The full pattern is:

• jo em mudo
• tu et mudes
• ell/ella es muda
• nosaltres ens mudem
• vosaltres us mudeu
• ells/elles es muden

So mudem = we move / we are moving, depending on context.

Because Catalan, like English, often uses the present tense for a planned future action, especially when there is a time word that makes the future clear.

So:

• Ens mudem demà = We’re moving tomorrow

This is very natural. The word demà already tells you it is future.

Catalan can also use other future forms, but in everyday speech the present is extremely common for arrangements and plans.

Catalan often drops subject pronouns because the verb ending already shows who the subject is.

Here, -em in mudem tells you it means we.

So:

• Ens mudem demà = perfectly natural
• Nosaltres ens mudem demà = also correct, but more emphatic

You would add nosaltres only if you want contrast or emphasis, for example:

• Nosaltres ens mudem demà, però ells la setmana que ve.
  We’re moving tomorrow, but they’re moving next week.

Yes. Catalan word order is fairly flexible here.

All of these are possible:

• Ens mudem demà.
• Demà ens mudem.

Both mean the same thing. Putting demà first can give it a little more focus:

• Demà ens mudem. = Tomorrow we’re moving.

Yes, in this kind of sentence it normally means to move house / change residence.

So Ens mudem demà would usually be understood as:

• We’re moving tomorrow
• more specifically, We’re moving to a new home tomorrow

If you want to be extra clear, you could say something like:

• Ens mudem de pis = We’re moving apartment
• Ens mudem de casa = We’re moving house

Usually no, not for moving house.

moure’s / movem means to move oneself, as in physical movement:

• Ens movem molt = We move around a lot

But for relocating to a new home, Catalan normally uses mudar-se:

• Ens mudem demà = We’re moving tomorrow

So this is an important vocabulary difference from English, where move covers both ideas.

No, not in a normal statement like this.

With a conjugated verb, the pronoun usually goes before the verb:

• Ens mudem demà ✅

You get pronouns after the verb in other structures, especially:

• infinitives: Volem mudar-nos = We want to move
• affirmative commands: Mudem-nos! = Let’s move!

So for this sentence, ens mudem is the correct order.

A broad pronunciation guide is:

enz moo-DEM deh-MA

A bit more carefully:

• ens sounds roughly like enz
• mudem is stressed on the second syllable: mu-DEM
• demà is stressed on the last syllable: de-MÀ

The final à is the stressed part of demà.

Yes. Catalan says simply:

• demà = tomorrow

So:

• Ens mudem demà = We’re moving tomorrow

You do not need a preposition like on before it.

Similarly:

• avui = today
• ahir = yesterday

In theory, since mudar can relate to changing, you might imagine other meanings. But in real life, with mudar-se and no other context, Ens mudem demà is normally understood as We’re moving house tomorrow.

So for a learner, that is the main meaning to remember.