We use the Present Continuous to say what is happening now:

Alice is eating now, but Jack is sleeping.

To make questions, put the verb "to be" in the beginning of the sentence:

Is Alice eating? Is Jack sleeping?

To make negative sentences, add not to the verb "to be":

Alice is not (isn't) eating. Jack is not (isn't) sleeping.

He's ride riding is riding rides an elephant now.

I'm fly I fly I is flying I'm flying a helicopter now.

Do Are Is Am they singing now?

I'm not driving I not driving I don't drive I'm not drive a lorry.

We play We is playing We're playing We playing with a ball now.

She not watching doesn't watch isn't watching amn't watching TV now.

Does she play Is she playing She's playing Is she play computer games now?

Are they Is they They're Do they swimming now?

Are they cook cooking they they cooking cook they now?