I'm = I am I've = I have I am become bald has the auxiliary verb to be (the form am ) followed by the past participle become . I have become bald has the auxiliary verb to have followed by the past participle become . become is an intransitive verb; that is, it cannot take a direct object.
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English_Learner123 how can I know if any verb is intransitive or not?Look it up in a dictionary.
English_Learner123Do I have to learn which verb is intransitive or which verb is not?Yes. That helps.
English_Learner123"I'm" for the what subject is, and " I have " for what subject possesses.