【Gone】 must always be preceded by 1 of the 23 auxiliary (or helping) verbs (are, was, were, have, and others).

【Went】 never takes an auxiliary (or helping) verb.

• I should have 【gone】 to college when I had the chance.
• I 【went】 to college immediately after high school.

Note: The 23 auxiliary (or helping) verbs are: am, are, be, being, been, can, could, did, do, does, had, has, have, is, may, might, must, shall, should, was, were, will, and would.

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