se puso de pie y comenzó a

stood up and began to

→ se
phrase Rare #46,472
stood up and began to Used with a following infinitive to describe someone standing up and then starting an action. The subject is often understood from context.
SP: Mi hermano se puso de pie y comenzó a bailar.
EN: My brother stood up and began to dance.

Toda la audiencia se puso de pie y comenzó a aplaudir.

The entire audience stood up and began to applaud.

Se puso de pie y comenzó a presentarse.

She stood up and began to introduce herself.

El hombre se puso de pie y comenzó a cantar.

The man stood up and began to sing.

La gente se puso de pie y comenzó a cantar.

The people stood up and began to sing.