adelantarle

dative form-of infinitive object-singular object-third-person

adelantarの不定形とleを組み合わせたもの

English Meaning

infinitive of adelantar combined with le

Voy a adelantarle en la fila para que no tenga que esperar tanto.

彼に列で先に進ませるので、彼があまり長く待たされることはありません。

I'm going to let him go ahead in line so he doesn't have to wait so long.