Here is the second part of Changed Vowels. In the first video, 4 short vowels that can change their forms were introduced. In this video, the other 3 long vowels will be introduced. Watch this video for further explanation. https://youtu.be/nxdORZn82Hg
When you learn Thai vowels, make sure you learn a list of changed vowels. Most of the Thai vowels have one form. However, some vowels must change their forms when containing a final consonant in a syllable or a word. Watch this video for further explanation.