porque estaba enfermo

because he was sick

→ porque
phrase Uncommon #15,491
because he was sick The subject can be understood from context; enfermo changes to enferma for a female subject. Estaba can refer to different people depending on context.
SP: No salió de casa porque estaba enfermo.
EN: He didn’t leave the house because he was sick.

Él no pudo venir porque estaba enfermo.

He couldn't come because he was sick.

Él no estaba en la escuela porque estaba enfermo.

He wasn’t at school because he was sick.

No pude ir a la fiesta porque estaba enfermo.

I couldn't go to the party because I was sick.

No pudo venir porque estaba enfermo.

He couldn't come because he was sick.

No pude ir a trabajar porque estaba enfermo.

I couldn't go to work because I was sick.

Estuve ausente a clases porque estaba enfermo.

I was absent from class because I was sick.

No pude asistir a esa fiesta porque estaba enfermo.

I couldn't attend that party because I was sick.

Lo siento, no he podido escribir antes porque estaba enfermo.

I'm sorry, I couldn't write sooner because I was sick.

Tom no pudo acudir a la reunión porque estaba enfermo.

Tom couldn't attend the meeting because he was sick.

Él no vino porque estaba enfermo.

He didn't come because he was sick.

No fui porque estaba enfermo.

I didn’t go because I was sick.

El niño faltó a clases ayer porque estaba enfermo.

The boy missed school yesterday because he was sick.

Tom fue al hospital porque estaba enfermo.

Tom went to the hospital because he was sick.