Antes de, Después de, and Antes de Que: Subjects and Time in Spanish

Antes de, Después de, and Antes de Que: Subjects and Time in Spanish

In this lesson, you will express what happens before or after another action. You will choose between an infinitive and a full subordinate clause according to the structure and the relationship between the subjects, not by translating English “before” or “after” word for word.

Antes de + infinitive

Use antes de + infinitive when the structure does not need a separately conjugated subordinate subject.

• Antes de salir, cierro las ventanas. — Before leaving, I close the windows.
• Antes de viajar, compramos los billetes. — Before traveling, we buy the tickets.
• Revisa la dirección antes de enviar el paquete. — Check the address before sending the parcel.

Después de + infinitive

• Después de comer, volvemos al trabajo. — After eating, we return to work.
• Después de llegar, llamé a Marta. — After arriving, I called Marta.
• Después de terminar la reunión, iremos a casa. — After finishing the meeting, we will go home.

Antes de que + subjunctive

Use antes de que when the time expression contains a full clause with its own conjugated verb.

• Te llamaré antes de que salgas. — I will call you before you leave.
• Tenemos que terminar esto antes de que llegue el cliente. — We have to finish this before the client arrives.
• Guarda una copia antes de que borres el archivo. — Save a copy before you delete the file.

The event after antes de que is treated as not yet completed at the reference point, so these target patterns use the subjunctive.

Compare same-subject and different-subject patterns

Same actor:

Antes de salir, Ana revisa el billete. — Before leaving, Ana checks the ticket.

Different actor:

Ana revisa el billete antes de que Carlos salga. — Ana checks the ticket before Carlos leaves.

The second sentence needs a full clause because Carlos has his own conjugated action.

Después de que with completed or factual events

Después de que can introduce a full clause. In familiar completed contexts, the indicative is common.

• Después de que terminó la reunión, salimos. — After the meeting ended, we left.
• Después de que llegó Ana, empezamos a comer. — After Ana arrived, we started eating.

The subordinate events are presented as completed facts.

Future context with después de que

When the event is still awaited in the future, a subjunctive pattern can appear:

Después de que termine la reunión, iremos a casa. — After the meeting ends, we will go home.

This follows the same broader future-time logic you learned with cuando, hasta que, and en cuanto.

Do not translate “before” mechanically

English can say “before I leave” and “before leaving.” Spanish chooses the structure according to whether a full conjugated clause is needed.

Antes de salir. — Before leaving.

Antes de que yo salga. — Before I leave.

Track event order

Sentence:

Antes de salir, llamé al hotel. — Before leaving, I called the hotel.

Order:

1. I called the hotel.
2. I left.

Sentence:

Después de llegar, llamé al hotel. — After arriving, I called the hotel.

Order:

1. I arrived.
2. I called the hotel.

A practical time-order method

1. Identify the two actions.
2. Decide which happens first.
3. Use antes de or después de with an infinitive when no separate conjugated subject is needed.
4. Use antes de que with a full subordinate clause and subjunctive in the target pattern.
5. Use después de que according to the time context: completed factual event versus awaited future event.
6. Check that the sentence makes the subject of each action clear.

From Time Order to Purpose

You can now express which action happens before or after another and choose a structure with a clear subject. The next lesson teaches para and para que for expressing purpose.