Mi tía enciende el hervidor cuando quiere preparar té rápido.

Encender is the infinitive, meaning to turn on / to light.

In the sentence, we need the verb conjugated for mi tía (my aunt), which is third person singular:

• yo enciendo
• tú enciendes
• él/ella/usted enciende

So Mi tía enciende... means My aunt turns on...

Also, encender is a stem-changing verb in the present tense:

• e → ie in most forms

That is why you get enciende, not encende.

The infinitive is querer (to want). Here it is conjugated to match mi tía:

• yo quiero
• tú quieres
• él/ella/usted quiere

So:

• quiere preparar = she wants to prepare

Like encender, querer is also a stem-changing verb in the present:

• e → ie

So querer becomes quiere in this form.

This is a very common question.

In this sentence, cuando means something like whenever in a habitual sense:

• Mi tía enciende el hervidor cuando quiere preparar té rápido.
• My aunt turns on the kettle when she wants to make tea quickly.

Because this describes a usual, repeated situation, Spanish uses the indicative:

• cuando quiere

You would often use the subjunctive (cuando quiera) when referring to a future or not-yet-realised situation:

• Encenderá el hervidor cuando quiera preparar té.
• She will turn on the kettle when she wants to make tea.

So here, quiere is correct because the sentence is about habit, not a future event.

In Spain, hervidor usually means kettle, especially an electric kettle.

A useful distinction is:

• hervidor = kettle / boiler
• tetera = teapot

So if you are talking about the appliance that heats water, hervidor is the right word.

Sometimes people also say hervidor de agua to make it extra clear.

Spanish uses articles (el, la, los, las) more often than English.

So where English might say:

• turn on kettle or turn on the kettle

Spanish very naturally says:

• encender el hervidor

Here el does not necessarily mean a very specific kettle in the way English always feels it does. It is just the normal way to refer to the object.

This is very common in Spanish:

• abrir la puerta = open the door
• lavarse las manos = wash your hands
• encender el hervidor = turn on the kettle

Spanish often leaves out the article with foods and drinks when speaking in a general or non-specific way.

So:

• preparar té = to prepare tea
• beber agua = to drink water
• comprar pan = to buy bread

If you say el té, it often sounds more specific:

• a particular tea
• the tea that has already been mentioned
• tea as a specific serving or item

So in this sentence, preparar té sounds natural because it means make some tea / make tea in general.

Both can work, but preparar té sounds very natural and slightly more precise here.

• preparar té = prepare tea
• hacer té = make tea

In everyday Spanish, both are understandable. Preparar often sounds a bit more natural when talking about getting a drink or food ready.

You might also hear:

• prepararse un té = make oneself a tea
• hacer un té = make a tea

So the sentence is perfectly fine, but there are other natural options too.

Strictly speaking, rápidamente is the regular adverb meaning quickly.

So a more formally textbook-like version might be:

• Mi tía enciende el hervidor cuando quiere preparar té rápidamente.

However, in real Spanish, especially in speech, rápido is very often used adverbially to mean quickly:

• Hazlo rápido. = Do it quickly.
• Ven rápido. = Come quickly.

So preparar té rápido is natural and common, especially in informal language.

That said, some learners are first taught that:

• rápido = adjective (fast, quick)
• rápidamente = adverb (quickly)

That rule is useful, but real Spanish often allows rápido as an adverb too.

Tía has an accent because the í and a are pronounced in separate syllables:

• tí-a

Without the accent, Spanish spelling rules would tend to suggest a diphthong rather than a clear break.

The accent mark shows that the i is stressed and forms a hiatus:

• tía
• día
• frío

So the accent is not optional; it is part of the correct spelling.

The accent in té helps distinguish it from te, the unstressed pronoun meaning you (indirect object) or yourself in some contexts.

Compare:

• té = tea
• te = you / to you

Examples:

• Quiero té. = I want tea.
• Te quiero. = I love you.

This kind of accent is called a diacritical accent.

Yes.

Both enciende and quiere are in the present indicative, but the meaning is habitual:

• Mi tía enciende el hervidor cuando quiere preparar té rápido.
• My aunt turns on the kettle when she wants to make tea quickly.

It describes what she generally does, not necessarily what she is doing right now.

Spanish uses the simple present very often for:

• habits
• routines
• general truths

So this sentence is not the same as:

• Mi tía está encendiendo el hervidor... = My aunt is turning on the kettle...

That would describe an action in progress.

It depends on the variety of Spanish.

In many parts of Latin America, prender is very common for turn on:

• prender la luz
• prender la televisión

In Spain, encender is usually the more standard and expected choice for things like lights, heaters, or a kettle.

So for Spanish from Spain, enciende is the better option.

Yes, Spanish word order is fairly flexible, but changing it can affect emphasis or naturalness.

The original order is very natural:

• Mi tía enciende el hervidor cuando quiere preparar té rápido.

You could also hear variations like:

• Cuando quiere preparar té rápido, mi tía enciende el hervidor.

This puts more focus on the when-clause first.

But not every change sounds equally natural. For example, moving rápido around may slightly change what feels emphasized:

• preparar té rápido
• preparar rápido el té
• preparar el té rápidamente

All are possible, but the original sentence is a normal, natural structure.