Завтра нас здесь не будет - why "нас", not "we"?

Question

In the statement *`"Завтра нас здесь не будет."`* (*"We will not be here tomorrow."*), why use *нас* instead of *мы*? And why the conjugation is on the third person? I would translate it like *"Tomorrow, here will not go to us"*.

Answer 1

Завтра нас здесь не будет means We are not going to be here tomorrow.

In this case you ask a question: Who is not going to be here? КОГО не будет здесь завтра? Because of that you need genitive case (Родительный падеж) of «мы» - «нас».

You would say Мы не придём сюда завтра. In this case мы is the subject of the sentence in its nominative case.