English grammar rule Been part agreement

If you have more than one verb in a sentence, there are several ways to combine them.

Active voice: simple present (I fly, I speak) along with the simple past (I flew, I spoke) can’t be used with “to be” by itself. Instead, use a form of to be with a present participle (-ing) to indicate continuous tenses (I am singing).

Passive voice: use the right form of “to be” with a past participle (-ed).