Ella juró que volvería.

Yes, Spanish often drops subject pronouns, so Juró que volvería is also perfectly correct.

Including ella can:

• add emphasis,
• create contrast, or
• make it extra clear who is being talked about.

So:

• Juró que volvería = normal, neutral
• Ella juró que volvería = she swore she would come back, possibly emphasizing she

Juró is the preterite, which presents the action as a completed event: she swore, at a particular moment.

Juraba is the imperfect, which would usually suggest:

• a repeated action,
• an ongoing background action, or
• a habitual attitude.

So:

• Ella juró que volvería = she swore it once / in a specific moment
• Ella juraba que volvería = she kept swearing / she used to swear / she was saying she’d come back

Because this is a classic future in the past structure.

The main verb juró is in the past, so the return is seen as something that was still in the future from that past point of view. Spanish normally uses the conditional for that:

• past viewpoint: juró
• future relative to that past: volvería

So volvería here means would come back, not will come back.

Yes. Volvería is the simple conditional of volver.

It is formed like this:

• infinitive: volver
• conditional ending: -ía

Full conditional forms:

• yo volvería
• tú volverías
• él/ella/usted volvería
• nosotros volveríamos
• vosotros volveríais
• ellos/ellas/ustedes volverían

In this sentence, volvería means would come back.

Que introduces the clause after juró.

It works like that in English:

• Ella juró que volvería = She swore that she would come back.

In English, that is often optional:

• She swore she would come back.

In Spanish, que is normally required here. You generally cannot say:

• Ella juró volvería ❌

Yes, and it is very natural. But the structure is slightly different.

• Ella juró que volvería = she swore that she would come back
• Ella juró volver = she swore to come back / she swore she would come back

Both are possible. The version with que volvería is a full subordinate clause. The version with volver uses an infinitive.

A useful rule:

• if the subject of both verbs is the same, the infinitive is often possible:
  • Ella juró volver
• if the subject changes, you usually need que
  • a finite verb:
    • Ella juró que él volvería

Because volviera is usually the imperfect subjunctive, and that is not what this sentence needs.

After juró que..., Spanish normally uses the indicative/conditional, not the subjunctive, because the clause expresses what she said or promised would happen.

So:

• Ella juró que volvería ✅ normal
• Ella juró que volviera ❌ not correct for this meaning

Use volvería for would come back after a past reporting verb like juró.

Not really. Here it mainly expresses future from a past point of view.

Spanish conditional can sometimes express:

• politeness,
• hypothesis,
• uncertainty, or
• reported information,

but in this sentence it is not doing that. It simply matches the idea of would in she swore she would come back.

So the sentence does not mean she was unsure. It means that her return was presented as something expected after the moment when she swore.

They show which syllable is stressed.

• juró → stress on the last syllable: ju-RÓ
• volvería → stress on the í: vol-ve-RÍ-a

They are important because they help distinguish forms:

• juro = I swear
• juró = he/she swore

And:

• volveria ❌ not correct spelling
• volvería ✅ correct

It can often be translated as either come back, go back, or simply return, depending on context.

Spanish volver does not always match the English distinction perfectly. So:

• Ella juró que volvería could be understood as:
  • she would come back,
  • she would go back,
  • she would return

The exact English choice depends on the situation and point of view.

No, Spanish word order is more flexible than English, but some orders sound more natural than others.

Most neutral:

• Ella juró que volvería
• Juró que volvería

Possible with emphasis, but less neutral:

• Que volvería juró ella
• Juró ella que volvería

For learners, the safest and most natural pattern is:

• subject + verb + que clause

A broad guide for standard Spain pronunciation would be:

• Ella → roughly EH-ya
• juró → hu-RO
• que → keh
• volvería → bol-be-REE-a

A few useful notes:

• j in juró is pronounced like a strong throaty h
• v and b are pronounced very similarly in Spanish
• ll in most of Spain is pronounced like y in yes, though some speakers still distinguish it

They are similar, but not identical.

• prometer = to promise
• jurar = to swear

Jurar is usually stronger and more forceful. It can suggest a solemn or emphatic promise.

So:

• Ella prometió que volvería = she promised she would come back
• Ella juró que volvería = she swore she would come back

Both are correct, but juró sounds more intense.