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English definition of “begin”

begin

verb [I or T] (START TO HAPPEN)    /bɪˈɡɪn/ (present participle beginning, past tense began, past participle begun)
A1 to start to happen or exist : What time does the concert begin? The bridge was begun five years ago and the estimated cost has already doubled . The film they want to watch begins at seven. The meeting began promisingly , but then things started to go wrong .Starting and beginningStarting again Grammar:Begin or start?We can use the verbs begin and start to mean the same thing but begin is more formal than start. Begin is an irregular verb. Its past simple form is began and its -ed form is begun:
(Definition of begin verb (START TO HAPPEN) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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