Other progressive forms, made with compound forms of be, are described below.
Here be is not a stative verb, so may occur in progressive forms.
The progressive form is the most common case.
Verbal aspect is distinguished in English by using the simple or progressive (continuous) forms.
The progressive form would be a more likely occurrence if an immediate moment is being referred to.
Of those that start out as isolated attacks, about 60 percent eventually convert to the chronic progressive form.
His disease, a rare and progressive form of muscular atrophy, first appeared when he was 5 years old.
This was an old form to build the progressive form.
In this case the present perfect progressive form is often used, if a continuing action is being described.
Activism provided another route to self-expression for women of the Romantic period, even though it didn't always take a progressive form.