opened his/her mouth
Tom abrió la boca.
Tom opened his mouth.
She opened her mouth.
Entonces, finalmente, ella abrió la boca.
Then, finally, she opened her mouth.
Una de ellas no abrió la boca en toda la noche.
One of them didn't open her mouth all night.
— Vivir (1952)
No abrió la boca en toda la tarde.
He didn’t say a word all afternoon.
Tom abrió la boca para decir algo pero Mary lo interrumpió.
Tom opened his mouth to say something, but Mary interrupted him.
He opened his mouth.
No abrió la boca para protestar.
He didn't open his mouth to protest.
Tom abrió la boca para interrumpir.
Tom opened his mouth to interrupt.
Abrió la boca como si fuera a hablar, pero no dijo nada.
He opened his mouth as if he were going to speak, but he didn’t say anything.