บทที่ 3 (Lesson 3) — Long Vowels I

Introduction

Long vowels are essential to Thai — they're held for about twice the duration of short vowels and often carry the main stress of a word. In this lesson, you'll learn long vowels that appear above, below, and after consonants.

Why Length Matters

In Thai, vowel length can completely change meaning:

Beyond meaning, vowel length affects tone rules — you'll see this in Lessons 7-8.

Characters

Short vs Long Comparison

The "อ" Vowel: Dual Function

The letter อ serves two roles:

1. As a consonant (silent carrier for leading vowels)
2. As a vowel representing the "ɔɔ" sound (like "aw" in "law")

When following another consonant, it's a vowel:

• กอ (gɔɔ) — the sound "gor"
• บอ (bɔɔ) — the sound "bor"

How to Pronounce Long Vowels

The key is duration — hold the sound longer:

• ี (ii): Like "ee" in "see" — stretch it out
• ู (uu): Like "oo" in "food" — round your lips and hold
• า (aa): Like "a" in "father" — open and long
• อ (ɔɔ): Like "aw" in "saw" — round lips, open sound

Combining with Consonants

Key Points

1. Double the duration: Long vowels are approximately twice as long as short vowels
2. Same position, different length: ิ/ี and ุ/ู look similar but differ in duration
3. า is everywhere: The most common vowel in Thai
4. อ has dual function: Consonant or vowel depending on position

Common Words

• มา (maa) — to come
• กู (guu) — informal "I/me" (very casual)
• ดี (dii) — good
• หู (hǔu) — ear

Practice Exercises

What's Next

In Lesson 4, you'll learn the remaining long vowels, including the "leading" vowels that appear before consonants.