Japanese speakers
Mistake: Pronouncing it as "TEN MEN" with a clear syllable break between the two words.
Why: Katakana English preserves each word.
Fix: The n of "ten" assimilates to [m] before the bilabial m of "men", producing a held single [m]: [ˈtɛmˈmɛn]. Say it as one word.
Korean speakers
Mistake: Producing clear [n] then fresh [m] onset with syllable break.
Why: Korean n rarely assimilates to labial position at word boundaries.
Fix: n → [m] before /m/ in casual speech, producing a held single [m]: [ˈtɛmˈmɛn]. Same rule as "ten miles" [ˈtɛmˈmaɪlz].
Spanish speakers
Mistake: Producing clear [n] without assimilation.
Why: Spanish n has some assimilation but less systematic.
Fix: English n → [m] before m is automatic in fluent speech, often heard as a single long [m]: [ˈtɛmˈmɛn].