The verb "light" is an irregular verb in English, used primarily to describe the action of igniting or illuminating something.
Conjugation of "Light"

    Present Simple: light (I light, you light, he/she/it lights, we light, they light)
        Example: "They light the candles every evening."
    Past Simple: lit (or lighted)
        Example: "He lit the fireplace to warm up the room." / "He lighted the fireplace to warm up the room."
    Past Participle: lit (or lighted)
        Example: "She has lit the lantern to guide us." / "She has lighted the lantern to guide us."
    Present Participle / Gerund: lighting
        Example: "We are lighting the bonfire for the festival."

Usage Notes

    The forms "lit" and "lighted" are both acceptable for the past simple and past participle tenses. However, "lit" is more commonly used in modern English.
        Example with "lit": "He lit the match and started the fire."
        Example with "lighted": "The path was lighted by torches."

Examples in Sentences

    Present Simple: "I light a candle every night before bed."
    Past Simple: "They lit a fire in the fireplace last night."
    Past Participle: "The streets have been lit beautifully for the holiday season."
    Present Continuous: "She is lighting the candles on the birthday cake."
    Present Perfect: "We have lit all the lamps in the garden."
    Past Perfect: "By the time we arrived, they had already lit the bonfire."

Additional Notes

    The verb "light" can also be used metaphorically to mean to inspire or to brighten someone’s mood.
        Example: "Her smile lit up the room."
    When "light" is used in its metaphorical sense, the conjugations remain the same.
        Example: "His words have lit a spark of hope in our hearts."

Understanding the various forms and uses of the verb "light" helps in accurately describing actions related to illumination and ignition in different contexts.