The verb be takes on different forms in the present and past.
The verb be indicates existence, temporary condition or permanent status.
It is really hot today.
Grady’s not here right now.
Greg and Tim are engineers.
Trudy was sick yesterday.
Hawaii is in the Pacific Ocean.
The base form is be, the past participle is been, and the -ing form is being.
I’ll be back tomorrow.
He has been a doctor since 1998.
She is being nice today.
The verb be is also used in progressive tenses, passives and prepositional collocations:
He is writing a letter to his brother.
Jeff was cleaning the house this morning.
The Holleys have been living there since April.
The people were surprised by the news.
Craig was stopped by the policeman.
Tracy is fond of chocolates.
Cassie is not afraid of snakes.
I‘m interested in making money.