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Cap. 16

Future Forms (extended)

be about to · be due to · future perfect continuous

Future Forms (extended)

En este capítulo ampliamos las formas futuras más allá de will y going to. Aprenderás estructuras avanzadas como be about to, be due to y el future perfect continuous, todas comunes en exámenes Cambridge B2.

Objetivo
Dominar las formas futuras extendidas para expresar planes inmediatos, obligaciones programadas y acciones continuas completadas en el futuro.

Planes inmediatos y eventos programados

be about to · be due to

Be about to indica que algo ocurrirá muy pronto (en cuestión de minutos). Be due to se usa para eventos oficiales o programados, como vuelos, entregas o reuniones.

Estoy a punto de salir.
→
I'm about to leave.
El tren debe salir a las 10.
→
The train is due to leave at 10.
¡Cuidado! El vaso va a caer.
→
Watch out! The glass is about to fall!
Atención: No uses be about to con expresiones de tiempo futuro (in five minutes). Solo se refiere al momento inmediato.

Future Perfect Continuous

Acción continua completada antes de un momento futuro

will + have + been + verb-ing → will have been studying
Marcadores comunes: for + duración · by the time · when

Este tiempo enfatiza la duración de una acción que estará en progreso hasta un momento específico en el futuro. Se usa menos que el future perfect simple, pero es clave en contextos formales.

By June, I'll have been working here for 10 years.
Énfasis en los 10 años de trabajo continuo
When you arrive, they'll have been discussing this for hours.
La discusión ya lleva horas cuando llegues
In 2030, scientists will have been researching climate change for 50 years.
Investigación continua desde 1980 hasta 2030
Importante: Los verbos estáticos (know, believe, understand) no usan forma continua. Usa will have known, no will have been knowing.

¿Qué forma usar?

Elegir según el matiz deseado

Future Perfect Simple
By 2030, she will have graduated.
→ Énfasis en la finalización del grado
Future Perfect Continuous
By 2030, she will have been studying for 6 years.
→ Énfasis en la duración del estudio
Be about to
He's about to announce the results.
→ Va a hacerlo ahora mismo
Be due to
The results are due to be announced at 3pm.
→ Programado oficialmente para las 3

Errores frecuentes

Interferencia del español

She is about to leave in five minutes.
→
She is going to leave in five minutes.
Be about to no lleva expresiones de tiempo futuro.
The plane is due to at 10am.
→
The plane is due to depart at 10am.
Be due to necesita verbo después.
By next year, I will have been knowing him for a decade.
→
By next year, I will have known him for a decade.
Verbos estáticos no usan forma continua.
They will have been finished the project by Friday.
→
They will have finished the project by Friday.
Future perfect simple usa participio pasado, no been + -ing.

Resumen

be about to
acción inminente
I'm about to call you.
be due to
evento programado
The meeting is due to start at 9.
F. Perf. Cont.
will + have + been + -ing
She'll have been working for 8 hours.
Señales FPC
for + duración · by the time
for three years · by the time you arrive
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