"Cuando tengo" translates to "when I have" in English.
"Cuando llama" in English means "When she calls."
"Cuando vuelvas" means "when you come back" in English.
"Cuando llegamos tarde" translates to "When we arrive late" in English.
when (he or she) decides to
It means "When I call you"
It means, "When you want [to]."
¿Cuando vas tú a la fiesta?When are you going to the party?
'Cuando llora el chico' means: when the boy cries.
When do you eat the oranges?
it means: when do you eat supper?
"When is the 5th of May?"