There are three vowel diphthongs in American English. This time we're talking about the /ɔɪ/, as in the word "boy." Enjoy!
In this video, you'll find out how to make the /ɔɪ/ diphthong, typical mistakes related to its pronunciation, and the differences between diphthongs and monophthongs.
You'll practice making this sound with a pronunciation exercise recorded by a speech-language pathologist, specializing in the American accent.

By the way, here's our website: [ Ссылка ]

Quick Links:
• Diphthong /ɔɪ/, as in "boy:" 00:00
• Diphthong vs. monophthong: 00:40
• Diphthong definition: 01:48
• How to make the /ɔɪ/: 02:21
• Typical pronunciation mistakes: 03:54
• Pronunciation exercise: 04:36
• Spelling for diphthong /ɔɪ/: 07:31

Related videos:
#AmericanPronunciation #VowelSounds #Diphthongs
► Vowel Sound /ɪ/ as in "it"
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► Vowel Sound /ɔ/ as in "on"
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► Diphthong Sound /aʊ/ as in "cloud"
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► Diphthong Sound /aɪ/ as in "like"
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[THIS VIDEO HAS ENGLISH, JAPANESE, CHINESE, VIETNAMESE, PORTUGUESE, AND KOREAN SUBTITLES]
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TRANSCRIPT

Hello there! This is the "Sounds American" channel.
In this video, we're going to talk about the American vowel sound /ɔɪ/, as in the word "boy."
You can also hear this sound in words like "oil," "toy," "coin," or "joy."
We'll be using special phonetic symbols — /ɔɪ/ — for this sound.

Let's start with a small test.
Take a look at these two words: "jaw" and "joy"
Did you notice they differ by their vowel sounds? The /ɔ/ in "jaw" and the /ɔɪ/ in "joy."
Now, watch and compare what happens when you pronounce these vowels: /ɔ/ - /ɔɪ/
Do you see a difference in how your tongue and jaw move?

When you pronounce the /ɔ/ sound, your tongue and jaw move into one position only.
So, you pronounce just one sound. That's why the /ɔ/ is called "a single sound."
However, when you pronounce the /ɔɪ/ vowel, your tongue and jaw move from one position to another. The /ɔɪ/ sound is called a "diphthong," which means that it's made by merging two single sounds into one.
That's why your jaw and tongue change their positions as you make the first sound and then connect it to the second.

There are three diphthongs in American English, the /ɔɪ/, the /aʊ/ and the /aɪ/, as in the words "boy," "bow," and "by."
We've covered the /aʊ/ and the /aɪ/ in our other videos.
As for the /ɔɪ/, let's find out how to pronounce this sound.

To make the /ɔɪ/ diphthong correctly, focus on pronouncing two sounds and making a smooth connection between them.
This is how you do that.
Start with making the /ɔ/ sound.
Open your mouth as wide as possible and round your lips.
Flatten your tongue and pull it far back to your throat. Place it very low in your mouth. The tip of your tongue should be touching the back of your bottom front teeth.
Next, connect the /ɔ/ to the /ɪ/ sound.
Smoothly move your jaw up, until your mouth is almost closed. Relax your tongue and push it forward.
The first sound in a diphthong is typically longer and louder. So, make sure that you pronounce a nice and full /ɔ/ and then connect it to the /ɪ/.
Now, let's glide from the /ɔ/ to the /ɪ/ and blend the two sounds together: /ɔɪ/, /ɔɪ/, /ɔɪ/.

Let's talk about the most typical mistake that people make when pronouncing the /ɔɪ/ diphthong.
Many non-native speakers reduce the /ɪ/ sound in the /ɔɪ/.
As a result, the whole sound gets distorted, and it may lead to misunderstandings.
Compare: "boil" -- "boil"

[Pronunciation exercise]
Now, let's practice the /ɔɪ/ sound in some words.
This is how the practice works. You'll see a word on the screen and hear its pronunciation. Like this.
You'll have a few seconds to pronounce the word. Make sure you complete this part, as this is the only way to learn to speak with an American accent.
Let's begin.
• annoy
• appointment
• avoid
• boil
• boy
• broil
• choice
• coin
• deploy
• employ
• employee
• enjoy
• join
• joy
• lawyer
• loyal
• moist
• noise
• oyster
• point
• poison
• royal
• soil
• soy
• spoil
• toilet
• toy
• voice
• void
• voyage

You're done! Congratulations!

A few words about how this sound is represented in words.
There are two combinations of vowel letters that are pronounced as the /ɔɪ/ diphthong.
• First is the 'oi' combination, as in "coin," or "point."
• Second is the 'oy' combination, as in "boy," or "toy."
There's a third one, the 'aw'. We know of only one word in which these letters are pronounced as the /ɔɪ/ sound: lawyer. If you find any other words, leave us a comment!
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