• The church service will have finished by the time we arrived from the airport. The Auxiliary Verb “BE” “Be” has two common auxiliary uses.
First, be is added to the present participle of the notional verb to make the progressive form. • David is playing the piano. • The cricket team has been worrying about the weather. Second, be combines with the past participle of the notional verb in order to form the passive voice. • I was told about the accident. • The lock has been damaged by the thieves.