Use (Употребление):
- to say the action is happening at the moment of speaking (действие происходит в данный момент):
I am trying to work.
- to say about temporary things that you are doing currently (текущие, временные дела):
She is seeking a new flat.
- to say about arranged, inevitable things in the nearest future (согласованные, неизбежные дела в ближайшем будущем):
He is coming at 9 in the morning.
+ am /is /are + Ving: I am talking to you /They are dancing over there /He's speaking on the phone now
- am not /isn’t /aren’t +Ving: She isn’t working now /You aren’t doing right
?Am /Is /Are + Ving: Are you writing the letter? /Is he waiting for us? /Are they coming tonight?
Markers: now, at the moment, currently, temporary.