English definition of “be”
strong /biː/ weak /bi/, /bɪ/ auxiliary verb
› used with the present participle of other verbs to describe actions that are or were still continuing: Where are you going? How long have you been sitting there? He was standing by the window. He's working at the moment.
› used with the present participle of other verbs, and sometimes after a modal verb, to describe actions that will happen in the future: I'm going to France next week. I'll be coming back on Tuesday.
› used with the past participle of other verbs to form the passive: He was injured in a car crash. The results will be announced next week.
› used in conditional sentences to say what might happen: If he were to offer me the job, I'd take it.
› used to say that someone must or should do something: You are not to see him again.
› formal used to show that something has been organized: They are to stay with us when they arrive.