
. The Tai-Kadai languages are
thought to have originated in what is now southern China, and some linguists
have proposed links to the Austroasiatic, Austronesian, or Sino-Tibetan
language families. It is a tonal and analytic language. The combination of
tonality, a complex orthography, relational markers and a distinctive
phonology can make Thai difficult to learn for those who do not already
speak a related language.Transliteration
The ISO published an international standard for the transliteration of Thai into Roman script in September 2003 (ISO 11940). By adding diacritics to the Latin letters, it makes the transcription reversible, making it a true transliteration. This system is intended for academic use and is hardly ever used in Thailand for the common public.
