Question: is be part of speech?
Answer: Explanation: 'Be' is a verb because it equates a noun to doing or being another noun or adjective. 'To be' is a central verb in English and is used not just as a lexical verb (on its own - 'I am human', where 'am' is a conjugation of 'to be'), but has auxiliary functions as well. 'You' is a pronoun.