question forms

We make questions by:

1: moving an auxiliary to the front of the clause:

Everybody is watching	>>	Is everybody watching?
They had worked hard	>>	Had they worked hard?
He's finished work	>>	Has he finished work?
Everybody had been working hard	>>	Had everybody been working hard?
He has been singing	>>	Has he been singing?
English is spoken all over the world	>>	Is English spoken all over the world?
The windows have been cleaned	>>	Have the windows been cleaned?

2: … or by moving a modal to the front of the clause:

They will come	>>	Will they come?
He might come	>>	Might he come?
They will have arrived by now	>>	Will they have arrived by now?
She would have been listening	>>	Would she have been listening?
The work will be finished soon	>>	Will the work be finished soon?
They might have been invited to the party	>>	Might they have been invited to the party?

3: The present simple and the past simple have no auxiliary. We make questions by adding the auxillary do/does for the present simple or did for the past simple:

They live here	>>	Do they live here?
John lives here	>>	Does John live here?
Everybody laughed	>>	Did everybody laugh?