Thai is the national and official language of Thailand and the mother tongue of the Thai people, Thailand's dominant ethnic group. Thai is a member of the Tai group of the Tai-Kadai language family. 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. Standard Thai, also known as Central Thai or Siamese, is the official language of Thailand, spoken by about 65 million people including speakers of Bangkok Thai . Khorat Thai is spoken by about 400,000 (1984) in Nakhon Ratchasima; it occupies a linguistic position somewhere between Central Thai and Isan on a dialect continuum, and may be considered a variant or dialect of either. In addition to Standard Thai, Thailand is home to other related Tai languages, including: * Isan (Northeastern Thai), the language of the Isan region of Thailand, considered by some to be a dialect of the Lao language, which it very closely resembles (although it is written in the Thai alphabet). It is spoken by about 15 million people (1983). * Nyaw language, spoken mostly in Nakhon Phanom Province, Sakhon Nakhon Province, Udon Thani Province of Northeast Thailand. * Galung language, spoken in Nakhon Phanom Province of Northeast Thailand. * Lü (Tai Lue, Dai), spoken by about 78,000 (1993) in northern Thailand. * Northern Thai (Lanna, Kam Meuang, or Thai Yuan), spoken by about 6 million (1983) in the formerly independent kingdom of Lanna (Chiang Mai). * Phuan, spoken by an unknown number of people in central Thailand and Isan. * Phu Thai, spoken by about 156,000 around Nakhon Phanom Province (1993). * Shan (Thai Luang, Tai Long, Thai Yai), spoken by about 56,000 in north-west Thailand along the border with the Shan States of Burma (1993). * Song, spoken by about 20,000 to 30,000 in central and northern Thailand (1982). * Southern Thai (Pak Dtai), spoken about 5 million (1990). * Thai Dam, spoken by about 20,000 (1991) in Isan and Saraburi Province. Many of these languages are spoken by larger numbers outside of Thailand. Most speakers of dialects and minority languages speak Central Thai as well, since it is the language used in schools and universities all across the kingdom. Numerous languages not related to Thai are spoken within Thailand by ethnic minority hill tribespeople. These languages include Hmong-Mien (Yao), Karen, Lisu, and others. Standard Thai is composed of several distinct registers, forms for different social contexts: * Street Thai : informal, without polite terms of address, as used between close relatives and friends. * Elegant Thai : official and written version, includes respectful terms of address; used in simplified form in newspapers. * Rhetorical Thai: used for public speaking. * Religious Thai: (heavily influenced by Sanskrit and P?li) used when discussing Buddhism or addressing monks. * Royal Thai : (influenced by Khmer) used when addressing members of the royal family or describing their activities. Many Thais can speak at only the first and second levels, though they will understand the others.

Audio recordings of language programs—streaming—have an advantage over print or academic classes because hearing is how humans learn to speak. That is how we learned our native tongues, and how we effectively learn second languages. As babies, we listened to our parents speaking. In our hard-wired desire to communicate, we learned our native language by imitating them. According to linguists, babies begin by distinguishing basic syllables, and around 3 months, start to babble, making simple sounds (“ba-ba-ba” or “ma-ma-ma”). They also imitate the tonal changes of their parents’ language. By sixmonths, they can distinguish the sounds of their native language fromthose of foreign languages and begin to practice its sounds, intonations, and rhythms.Most children by the age of 1 year can say a few simple words, even if they aren’t clear on theirmeanings. At 18months, most children have a speaking vocabulary of eight to ten words. By 2, they begin forming simple sentences. And then language fluency begins to soar. In the early 1900s, European linguists proposed that language learning would be better if it were conducted in the target language. In this approach—called the Direct Method (or Natural Method)—all directions, explanations, and definitions are given in the language being taught. In a French class, French and only French is spoken or read. All grammar is learned inductively. While this method most closely imitates the way we learn our first language, it is difficult to teach and can be frustrating and discouraging to learners. Most audio-based language learning programs combine both native and target languages into talking phrasebooks.