Questions about example sentences with, and the definition and usage of "Ey"

A: it's mean : A , B , C , ...

A: It is probably like "Pardon?"

Somebody is asking what someone else said. Is that right?

A: Di “What’s up.” Eso puedes usar en cualquier situación en que uno se encuentre. Agrega bro al final para decir hermano. What’s up es cómo “que tal” “que onda.” Solo no tienes que decirlo en una ocasión formal. Espero que esto te ayude!

A: Hey! How's your day?

A: Can I borrow your xbox?

A: Check the question to view the answer

A: Check the question to view the answer

A: pronunciation is very good!
but the grammar of the sentence is wrong.