She studies epidemiology to track the spread of diseases.

Words 9 Difficulty Intermediate Featured sound Flap T
shee she STUH·deez studies eh·puh·dee·mee·AH·luh·jee epidemiology tuh to TRAK track dhuh the SPREHD spread uhv of dih·ZEE·zuhz diseases
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Americans pronounce "She studies epidemiology to track the spread of diseases" as "shee STUH-deez eh-puh-dee-mee-AH-luh-jee tuh TRAK dhuh SPREHD uhv dih-ZEE-zuhz" in casual speech. Several things bend the textbook pronunciation. The headline is the Flap T — the T between vowels turns into a quick D-like flap. It lands on studies, a hallmark of natural-sounding American speech. Keep stressed words long, unstressed words short, and link the consonants forward into the vowels.

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Common mistakes

Saying a hard "T" in the middle.

In "studies", the "d" between vowels sounds like a quick "d" — the tongue briefly taps the ridge behind the upper teeth. /t/ or /d/ becomes a quick tap [ɾ] — sounds like a soft D. The tongue briefly taps the ridge behind the upper teeth.

Saying a clean "tr" instead of a "ch" sound.

In "track", the "t" cluster blends into a "chr" sound — a natural American English pronunciation. /t/ shifts toward /tʃ/ ("ch"), so TR sounds like "chr".

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The breakdown

What's happening in this sentence.

Small tricks that turn a textbook sentence into how an American actually says it.

→ə
Reduced Words (to, for, of) in "she""she" is a function word — in connected speech, the full vowel reduces to a quick "shee" sound and consonants may simplify.
t→ɾ
Flap T in "studies"In "studies", the "d" between vowels sounds like a quick "d" — the tongue briefly taps the ridge behind the upper teeth.
C–V
Consonant-to-Vowel Linking between "studies" & "epidemiology"The "z" at the end of "studies" flows directly into the vowel starting "epidemiology" — the consonant migrates to the next word with no pause between.
Unreleased Stops in "track"In "track", the "k" is not released — the articulators get into position but hold without the burst of air.
ɾ
Flap T Across Words between "spread" & "of"The "d" at the end of "spread" links to the vowel starting "of" — it flaps to sound like a quick "d", with the tongue briefly tapping the ridge behind the upper teeth.
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she shee studies STUH·deez epidemiology eh·puh·dee·mee·AH·luh·jee to tuh track TRAK the dhuh spread SPREHD of uhv diseases dih·ZEE·zuhz
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Watch out

Common pronunciation mistakes in American English.

The textbook way isn't wrong — it's just not how anyone actually says it.

01

Saying a hard "T" in the middle.

In "studies", the "d" between vowels sounds like a quick "d" — the tongue briefly taps the ridge behind the upper teeth. /t/ or /d/ becomes a quick tap [ɾ] — sounds like a soft D. The tongue briefly taps the ridge behind the upper teeth.

STUH-teez→STUH·deez
02

Saying a clean "tr" instead of a "ch" sound.

In "track", the "t" cluster blends into a "chr" sound — a natural American English pronunciation. /t/ shifts toward /tʃ/ ("ch"), so TR sounds like "chr".

TRAK→TRAK
03

Releasing the final consonant with a puff of air.

In "track", the "k" is not released — the articulators get into position but hold without the burst of air. Air stops but there's no release burst — the articulators hold position.

TRAK→TRAK
04

Hard T at the end of a word, not a flap.

The "d" at the end of "spread" links to the vowel starting "of" — 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.

SPREHt→SPREHD
Questions

Questions people ask about this.

Why do the T sounds turn into D-like sounds in this sentence?
That's the flap-T rule: when /t/ sits between two vowels — inside a single word, or across the boundary between two words — Americans replace the crisp T with a quick D-like flap. It's one of the most distinctive sounds of casual American speech and one of the first things to copy if you want to sound less textbook.
Why is "she" said so quickly in this sentence?
Function words — articles, prepositions, auxiliaries, pronouns — reduce to short, unstressed schwa shapes in casual American speech. Pronouncing them fully like the dictionary entry is a dead giveaway of a textbook accent. Native speakers stress only the content words and let everything else collapse.
How are the words connected in casual American speech?
Americans don't pause between words. A consonant at the end of one word links forward into the vowel that starts the next; two vowels in a row get bridged by a tiny W or Y glide; an identical consonant repeated across a word boundary is held just once. The result is a continuous flow rather than a textbook word-by-word delivery.
Is this how the sentence is taught in textbooks?
Textbooks usually teach the citation form — every word pronounced fully, every consonant crisp, every vowel pure. Americans actually flap their Ts, drop function-word H's, link consonants forward into vowels, and reduce unstressed syllables to schwa. The respell on this page shows the casual form you'll hear in real conversations rather than the textbook version.

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