1. What are the different forms of the verb 'be' used for in English?
They are different conjugations of the verb 'be' used to express states, identities, and tense.
Explicación
The forms 'am', 'is', 'are', 'was', 'were', and 'been' are conjugations of the verb 'be' used to express states, identities, and tense in different grammatical contexts.