In casual American English, "Arthur had a toothache in his mouth south" sounds like "AR-ther had uh TOOTH-ayk ihn hihz MOWTH SOWTH". Several things happen here, and the headline one is the Consonant-to-Vowel Linking: the consonant links forward into the next vowel without a pause. Keep stressed words long, unstressed words short, and link the consonants forward into the vowels.
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What makes this sentence sound American.
The "" at the end of "arthur" flows directly into the vowel starting "had" — the consonant migrates to the next word with no pause between. This is called the Consonant-to-Vowel Linking, the way sentences stop sounding like a list and start sounding like speech. It comes out as AR-ther.
What's happening in this sentence.
Small tricks that turn a textbook sentence into how an American actually says it.
Tap any word for its full breakdown.
Each word has its own page with examples, common mistakes, and related words.
Common pronunciation mistakes in American English.
The textbook way isn't wrong — it's just not how anyone actually says it.
Hard T at the end of a word, not a flap.
The "t" at the end of "" links to the vowel starting "" — it flaps to sound like a quick "d", with the tongue briefly tapping the ridge behind the upper teeth. Same flap as within-word (R1) but spanning two words.
Pausing between the words.
The "" at the end of "" flows directly into the vowel starting "" — the consonant migrates to the next word with no pause between. Final consonant "migrates" to next word — no pause between.
Pronouncing the function word too fully.
"had" is a function word — in connected speech, the full vowel reduces to a quick "" sound and consonants may simplify. Full vowel reduces to schwa /ə/ or other weak vowel. Consonants may simplify.
Pronouncing the H clearly.
The "h" in "had" is dropped in connected speech — the preceding word's final consonant links directly to the remaining vowel — most natural in casual, rapid speech; in careful or formal speech, the H is typically kept. /h/ is dropped entirely — preceding word links directly into the remaining vowel (works after both consonants and vowels).