The Vietnamese language has 11 monophthong vowels: i, ê, e, ư, ơ, â, a, ă, u, ô, o. These basic vowels comprise a significant element in Vietnamese pronunciation system.

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Therefore, learning how to say these is the VERY FIRST STEP in getting to know the language.

In this video, Mr. Phi compares each vowel with a similar sound in English in the hope that learners can practice it much more easily

Source: Element Vietnamese, p.16-17 , Binh Nhu Ngo,