How to pronounce "ten boys" in English — Connected Speech Guide (IPA /ˈtɛmˈbɔɪz/)

How native English speakers pronounce "ten boys" (IPA /ˈtɛmˈbɔɪz/) — connected speech rule, example sentences, and audio for GA and RP. Free. n→/m/ before b (place assimilation)

ten boys pronunciation (IPA /ˈtɛmˈbɔɪz/) — Assimilation

What happens in this phrase

n→/m/ before b (place assimilation)

Example sentences

There were ten boys.
I saw ten boys.
ten boys were playing.
We counted ten boys.

Common mistakes by native language

Japanese speakers

Mistake: Pronouncing "ten" with a clear, unchanged alveolar [n] before "boys" — [ˈtɛnˈbɔɪz] — instead of shifting it toward [m].

Why: Japanese katakana rendering (テン) fixes the n sound regardless of context, and Japanese phonotactics don't have the same place-assimilation rule that English applies automatically before bilabial consonants like b.

Fix: Before a [b] or [p] sound, English speakers automatically shift a word-final [n] to [m], matching the lips-together place of the following consonant. So "ten boys" becomes [ˈtɛmˈbɔɪz] — practice saying "tem boys" until it feels natural.

Korean speakers

Mistake: Keeping the [n] fully alveolar and adding a slight pause before "boys" to avoid "blending" the two words together.

Why: Korean speakers often learn English spelling-first, and since "ten" is spelled with an n, there's a strong instinct to always pronounce it as written, resisting the natural sound-driven shift that fluent speech requires.

Fix: Remember that assimilation is about sound, not spelling — the letter n stays on the page, but the sound produced shifts to [m] when your lips need to close early for the upcoming [b]. Say [ˈtɛmˈbɔɪz] fast and notice your lips are already closing during the "n".

Chinese speakers

Mistake: Producing a nasalized vowel with an unreleased [n] that neither fully closes to [m] nor stays a clear [n], resulting in an ambiguous, mumbled transition.

Why: Mandarin's own nasal codas (as in 很 hěn) are often weakly articulated or absorbed into vowel nasalization, so the crisp English place-assimilation of [n]→[m] before bilabials doesn't have a direct model to imitate.

Fix: Commit fully to closing your lips for the [m] sound before starting "boys": [ˈtɛmˈbɔɪz]. A clear, deliberate lip closure — even if it feels exaggerated at first — trains the muscle memory needed for natural-speed assimilation later.

Similar phrase patterns

good boy — place assimilation before b (different starting consonant): Same environment (a word ending shifts to match the following [b]), but here it's [d]→[b] rather than [n]→[m]: [ˈɡʊbˈbɔɪ]. Both show how English consonants "borrow" the place of articulation from what follows.
green park — n→m assimilation before a bilabial-adjacent stop: Extends the same [n]→[m] shift seen in "ten boys" to a different following consonant environment, reinforcing that this is a general rule, not a one-off exception: [ˈɡrimˈpɑrk].
ten men — no assimilation needed — already nasal-nasal: Contrast case: since "men" already starts with [m], there's no shift required for "ten" — the two nasals stay distinct, showing assimilation only occurs when sounds genuinely clash in place.

Practice sentences

There were ten boys at the party. (describing a group)
I saw ten boys playing soccer. (casual observation)
Ten boys were waiting outside. (narrative description)
We counted ten boys in the photo. (counting activity)
Only ten boys joined the club. (reporting a number)

Notes

"Ten boys" is a simple counting phrase that hides one of English's most automatic and invisible sound changes: place assimilation. When a word-final alveolar nasal [n] is immediately followed by a bilabial consonant like [b] or [p], native speakers shift the [n] forward in the mouth to [m], matching the lip-closing gesture that's already needed for the next sound. This isn't sloppy speech — it's a systematic, universal feature of fluent English that even careful, formal speakers apply without noticing. For A2 learners, "ten boys" is a perfect entry point because the number-plus-noun structure appears constantly in everyday counting and description, and the assimilation pattern it teaches ([n]→[m] before bilabials) recurs in dozens of common phrases like "ten pounds", "in bed", and "one more".