talk about something which is in progress at the moment of speaking
"Where are the children?" "They're playing in the garden."
"What are you doing at the moment?" "I'm writing a letter."
You can switch off the TV. I'm not watching it. Look, there's Sally. Who is she talking to? "Where is
Margaret?" "She's having a bath." Let's go out now. It isn't raining any more, (at a party) Hello, Ann. Are
you enjoying the party?
— talk about something which is in progress around the present, but not necessarily at the moment of