tolong ya kak,,, yg tau

Answer:
_________

1. Someone needs attention for example, When a teacher will teach in class, She / he will call attention to the students by saying
=> Attention, please.

2. Informal expression
Usually an expression between an already familiar friend, for example:
=> Can you help me
=> Will you borrow me your umbrella?
=> Do not bother me, I'm busy, Elsa.

Formal expression
Usually done with an older or respected person such as with a teacher or a boss in a company. example:
=> Would you like to help me, please.
=> How do you do?
=> How are you today, sir?
=> If you do not mind, please let me to indroduce myself, sir.


*THANKS*