Time Warp
Make plans and promises — cuando llegues, en cuanto pueda — in live conversation.
The rule is a time split. For the past or a habit, cuando takes the indicative: cuando era niño vivíamos en el campo, cuando voy al trabajo escucho música. For a future moment that hasn't happened yet, it takes the present subjunctive: cuando tenga tiempo, te llamo, te aviso cuando llegues — never cuando llegarás. The same logic runs the other time connectors: en cuanto, tan pronto como and antes de que always take subjunctive for the future (te llamo en cuanto llegue a casa, llámame antes de que salgas), while hasta que splits: esperé hasta que llegó el tren (past) vs no me iré hasta que me respondas (future).
Below: the promises and plans these clauses build, the connector locals swap in for en cuanto, the mistakes that mark a textbook learner — and a way to practice by making real plans out loud, not conjugating lists.
The warm-up pack
The same cuando, mientras and hasta que — flipping mood depending on whether it already happened.
01 · Cuando, talking about the past
Cuando era niño vivíamos en el campo.
When I was a child we lived in the countryside.
Cuando pointing at something already over takes the indicative — era, vivíamos, plain past tense, no subjunctive in sight.
02 · Cuando, talking about a habit
Cuando voy al trabajo escucho música.
When I go to work I listen to music.
A routine gets the same treatment as a memory: cuando plus indicative, because it's a fact about how things are.
03 · Cuando, talking about the future
Cuando tenga tiempo, te llamo.
When I have time, I'll call you.
The second this cuando points at something that hasn't happened yet, it needs tenga, not tengo. That's the whole switch.
04 · Same word, future plan
Iremos al parque cuando deje de llover.
We'll go to the park when it stops raining.
Same rule, new verb: deje, not deja — the rain hasn't stopped yet, so it stays subjunctive until it does.
05 · Mientras, right now
Mientras cocino, escucho podcasts.
While I cook, I listen to podcasts.
Two things happening at once, right now, plainly true — mientras just needs the indicative here.
06 · Mientras, in the middle of it
Mientras estudiaba, sonó el teléfono.
While I was studying, the phone rang.
This is the classic setup: estudiaba is the backdrop, sonó is what broke into it. Mientras keeps the indicative even when it's setting a scene.
07 · The instant it happens
Te llamo en cuanto llegue a casa.
I'll call you as soon as I get home.
En cuanto always means the future hasn't happened — llegue, not llego. Say it any other way and it sounds off.
08 · As soon as you know
Tan pronto como sepa algo, te aviso.
As soon as I know something, I'll let you know.
Tan pronto como works exactly like en cuanto: future, unknown, subjunctive — sepa, not sé.
09 · Before you go
Llámame antes de que salgas.
Call me before you leave.
Antes de que never touches the indicative, whatever the tense. It's always about something that hasn't happened relative to the main verb.
10 · Hasta que, already happened
Esperé hasta que llegó el tren.
I waited until the train arrived.
The train already arrived — llegó — so hasta que sits with a plain past indicative, done deal.
11 · Hasta que, still waiting
No me iré hasta que me respondas.
I won't leave until you answer me.
Same connector, unresolved situation: respondas, because you're still waiting for it to happen.
FLUENT
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Ten-minute spoken lessons. A teacher who answers back — and gently fixes what you got wrong.
First 10 lessons freeandbefluent.com/spanish/time-warpRegional Spanish
Textbooks teach one word. Locals use several — pick your region's and stay consistent.
| English | Mexico | Argentina |
|---|---|---|
| when you get a chance | cuando tengas chance | cuando puedas |
| as soon as | en cuanto | apenas |
| I'll get back to you | te marco | te escribo |
Watch out
The part no drill site can do
Carla
Your grammar teacher for this pack
No conjugation charts, nothing to fill in. The Time Warp lessons are all planning talk — and Carla keeps you making real promises with real timelines: when will you call her back (cuando tenga tiempo, te llamo), what happens once you're home (te llamo en cuanto llegue a casa), what she should do before leaving (llámame antes de que salgas). Then she flips the frame on the same verb — past habit, indicative; future plan, subjunctive — until the switch happens mid-sentence without you noticing.
Blank mid-sentence and nothing bad happens — she waits. That's the practice, without unnecessary judgement.
Finish the 5 lessons and Time Warp is yours — earned, not given.
First 10 lessons free · 10-minute spoken lessons · your AI coaching team remembers you
Quick answers
Both — it depends on time. Past events and habits take the indicative (cuando llegué, nadie estaba en casa; cuando hace sol salgo a correr). Anticipated future moments take the subjunctive (cuando termines, me avisas).
Spanish never uses the future indicative after cuando. A future moment is treated as not-yet-real, so it takes the present subjunctive: te aviso cuando llegues, cuando seas mayor lo entenderás.
Yes, always: antes de que te vayas, dame un abrazo. When both actions share one subject, skip the que and use the infinitive instead — antes de salir vs antes de que salgas.
Only when it points at the future: no me iré hasta que me respondas, trabajaremos hasta que terminemos. For the past or a habit it's indicative: leí hasta que me dio sueño.
As soon as — and for future events it always takes the subjunctive: te llamo en cuanto llegue a casa. In Argentina you'll hear apenas doing the same job: apenas termine, te escribo.
