when passivijation of continuous tenses are formed we add being to retain the continuous tense.being is also used as a main verbeg 1 they are being called by the principal.2He is being naughty at...
To change a noun into a verb you add -ing. So when you see a word ending in -ing you know that it is the activity described by the word that is being used as a subject or an object.
I swim {is the...