entendiera

El perro ladraba como si se entendiera lo que yo había dicho.

The dog barked as if it understood what I had said.

Necesitaba a alguien que la entendiera.

She needed someone who understood her.

Hablaban demasiado rápido para que yo les entendiera.

They were speaking too fast for me to understand them.

Tom no sabía que Mary entendiera francés.

Tom didn't know that Mary understood French.

Ojalá me entendiera.

I wish you understood me.

— Perdición (1944)

Pero el tipo le miró como si no le entendiera.

But the guy looked at him as if he didn't understand.

— It's Such a Beautiful Day (2012)

Él habló lo suficientemente despacio para que cualquiera entendiera.

He spoke slowly enough for anyone to understand.

Hice como si no lo entendiera.

I pretended not to understand it.

Le habló duro para que entendiera la gravedad de la situación.

He spoke to her firmly so that she would understand the seriousness of the situation.

Dudo que Tom entendiera lo que trataba de decirle.

I doubt Tom understood what I was trying to tell him.