Tenemos que resolver este asunto hoy mismo.

In Spanish, subject pronouns are often omitted because the verb ending already shows who the subject is.

• tenemos = we have
• So (nosotros) tenemos already clearly means we have

That’s why Tenemos que resolver... is completely natural. Adding nosotros would only be for emphasis or contrast:

• Nosotros tenemos que resolver este asunto, no ellos.
  We have to sort this matter out, not them.

Tener que + infinitive is a very common structure meaning to have to do something.

In this sentence:

• tenemos que = we have to
• resolver = resolve / sort out

So:

• Tenemos que resolver... = We have to resolve...

It expresses obligation or necessity.

Examples:

• Tengo que estudiar. = I have to study.
• Tienen que salir. = They have to leave.

Because after tener que, Spanish uses an infinitive.

Structure:

• tener (conjugated)
• que
• infinitive verb

So:

• tenemos que resolver
• not tenemos que resolvemos

This is like English:

• we have to resolve
• not we have to we resolve

Because asunto is a masculine noun.

In Spanish, demonstratives have to agree with the noun in gender and number:

• este for singular masculine nouns
• esta for singular feminine nouns

So:

• este asunto = this matter
• esta cosa = this thing

The ending -o often suggests a masculine noun, and asunto is indeed masculine.

Asunto means matter, issue, or business. In this sentence, it sounds a bit more formal or professional than a word like cosa.

Depending on context, este asunto could mean:

• this matter
• this issue
• this business
• this problem

It is a useful word when talking about something that needs attention, especially in work, legal, administrative, or serious contexts.

Hoy mismo adds emphasis. It means something like:

• today itself
• today, no later
• this very day
• today for sure

So:

• hoy = today
• hoy mismo = today, and specifically today, without delay

It makes the sentence sound more urgent.

Compare:

• Tenemos que resolver este asunto hoy. = We have to resolve this matter today.
• Tenemos que resolver este asunto hoy mismo. = We have to resolve this matter today itself / today without fail.

Here mismo is an emphatic word. It strengthens the time expression hoy.

In Spanish, mismo often adds the idea of exactly, very, or itself depending on context.

Examples:

• ahora mismo = right now
• hoy mismo = today itself / today without delay
• esa misma noche = that very night

So in this sentence, mismo doesn’t mean same in the usual sense of the same; instead, it adds urgency and emphasis.

Yes. Spanish word order is fairly flexible, especially with time expressions like hoy mismo.

These are all possible, though the emphasis changes:

• Tenemos que resolver este asunto hoy mismo.
• Hoy mismo tenemos que resolver este asunto.
• Este asunto tenemos que resolverlo hoy mismo.

The original sentence is very natural and neutral.
If you move hoy mismo to the front, it sounds more emphatic:

• Hoy mismo tenemos que resolver este asunto.
  = Today, specifically, we have to sort this out.

Yes, absolutely. That would also be correct.

Difference in nuance:

• Tenemos que resolver... = We have to resolve...
• Debemos resolver... = We must / should resolve...

In many contexts, both work. But:

• tener que often sounds like practical necessity or obligation
• deber can sound slightly more formal, moral, or institutional depending on context

So the original sentence feels very natural in everyday speech.

They are similar, but not always identical.

• resolver = to resolve, deal with, work out
• solucionar = to solve, fix

In many contexts, both are possible:

• resolver un problema
• solucionar un problema

But resolver un asunto sounds especially natural, because asunto is a matter/issue, and resolver fits that kind of noun very well.

So:

• resolver este asunto = very natural
• solucionar este asunto = possible, but a bit less idiomatic in some contexts

Because hoy is an adverb of time, not a noun here.

• hoy = today
• mismo intensifies it

You do not use an article with hoy in this kind of expression.

Compare:

• Hoy tengo trabajo. = Today I have work.
• Hoy mismo voy. = I’m going today itself / right away today.

So hoy mismo works as a time phrase, not as a noun phrase.

The sentence already sounds natural in Spain Spanish. It is clear, direct, and slightly serious or businesslike.

Register:

• Tenemos que = everyday and natural
• resolver = neutral to slightly formal
• este asunto = somewhat formal/serious
• hoy mismo = strong urgency

A Spaniard might say this in a workplace, family discussion, or any situation where something needs sorting out immediately.

A more casual alternative could be:

• Tenemos que arreglar esto hoy mismo.

But that changes the tone:

• resolver este asunto sounds more formal and precise
• arreglar esto sounds more conversational

A simple pronunciation guide:

• Tenemos → teh-NEH-mos
• que → keh
• resolver → reh-sol-BER
• este → ES-teh
• asunto → ah-SOON-toh
• hoy mismo → oy MEES-moh

A few useful notes:

• v in resolver is pronounced like b in Spanish
• h in hoy is silent
• Stress falls on:
  • teNEmos
  • resolVER
  • aSUNto
  • MISmo

In connected speech, Spanish flows smoothly:

• Tenemos que resolver este asunto hoy mismo.