On Monday or on Mondays

On Monday or on Mondays Which is correct, I always work on Monday or I always work on Mondays? By Corey Coyle, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=5 Which is correct, I always work on Monday or I always work on Mondays? On Monday or on Mondays, on Tuesday or on Tuesdays, on Wednesday or on Wednesdays, on Thursday or on Thursdays, on Friday or on Fridays, on Saturday or on Saturdays, on Sunday or on Sundays? Rules and Examples RULE: Use the plural form of a day of the week when you talk about it in general, when the fact repeats. INCORRECT: I always work on  Monday. CORRECT: I always work on  Mondays. Notice that the sentence contains a verb in the Simple Present and an adverb of frequency. Use a plural form of the name of the day of the week to show repetition. Video Lesson Free Grammar Checkers Virtual Writing Tutor grammar checker website Grammarly plugin for Chrome Please follow and like us: