Academic English Skills with Dr. Byrnes

In the previous section, we learned that there are about 15 vowel phonemes in standard American English. Our goal is to learn all these sounds so that we can say words correctly. So, in this section, we aim to find a way to study them systematically.  Since vowel sounds are produced without any obstructing part in the mouth, it can be hard to describe how to pronounce vowel sounds. Some methods suggested are the shape of the mouth and the distance between the lips. These methods are limited however since they do not explain what is really going on inside of the mouth.  Vowel diagram with lips and tongues Tongue height To describe the production of vowel sounds systematically, linguists employ two measures: the height of the tongue and the originating location of the sound in the mouth. The way we move and shape our tongue plays a big part in giving each vowel its own sound. When we pronounce a vowel, even a small change in the position of the tongue can make a difference in th...

Lecture notes 1. What is a Vowel? A vowel is a syllable core : Every spoken word beat (syllable) requires a vowel sound at its center, known as the nucleus. Vowels can stand alone : Unlike consonants, vowels can form full syllables without any surrounding sounds. Blurry boundaries : Linguistic rules change by language; English views the sound /ju/ as a consonant-vowel blend, while Korean views it as two vowels. 2. Why School Classification Fails The "Long/Short" myth : Schools teach that vowels are strictly long or short, but short vowels can actually last just as long phonetically. Missing sounds : The traditional 5-letter system completely ignores vital American sounds like /u/ (blue) and /ʊ/ (book). Multi-use letters : Single letters are forced to make completely unrelated sounds across different words. 3. English is Not Phonetic No fixed rules : Unlike a purely phonetic language like Korean, you cannot reliably sound out written English. Historical mixing : English is an...

  Introduction Learning English pronunciation can be confusing—especially with the differences between American English and British English . Starting in 2026, the TOEFL Speaking section will include a listen-and-repeat task, and speakers may use either accent. Don’t worry—you don’t need to imitate an accent like an actor. TOEFL only cares about intelligibility. To guide us, we’ll explore the differences with the help of Dr. Nanhee Byrnes , a pronunciation expert. General American vs. Received Pronunciation General American (GA) : Neutral Midwestern accent, used widely in U.S. media. Received Pronunciation (RP) : Traditional “BBC accent,” linked to educated speakers in southern England. These serve as the standard reference accents for American and British English. Vowel Charts GA : 10 monophthongs + 5 diphthongs RP : 12 monophthongs (short/long), 8 diphthongs, and 5 triphthongs 10 Key Pronunciation Differences 1. Vowel Length vs. Tense/Lax RP : Distinc...