Word/Phrase: his birthday
Translation: su cumpleaños
Pronunciation: su kumpleˈaɲos
He is excited for his birthday - Él está emocionado por su cumpleaños
They celebrated his birthday with a big party - Celebraron su cumpleaños con una gran fiesta
I forgot to buy a gift for his birthday - Olvidé comprar un regalo para su cumpleaños
His birthday is in July - Su cumpleaños es en julio
We always have cake on his birthday - Siempre tenemos pastel en su cumpleaños