Introduction
Japanese also known as Nihongo in Japan, is an East Asian language spoken by about 128 million people, primarily in Japan, where it is the national language. It is a member of the Japonic (or Japanese-Ryukyuan) language family, and its ultimate derivation and relation to other languages is unclear. Japonic languages have been grouped with other language families such as Ainu, Austroasiatic, Korean, and the now-discredited Altaic, but none of these proposals has gained widespread acceptance. It is also a recognized minority language of Angaur, a state of Palau and Singapore. Japanese is an agglutinative, mora-timed language with relatively simple phonotactics, a pure vowel system, phonemic vowel and consonant length, and a lexically significant pitch-accent. Word order is normally subject–object–verb with particles marking the grammatical function of words, and sentence structure is topic–comment.