Taiwanese Mandarin

Taiwanese Mandarin is a variant of Mandarin derived from the official Standard Mandarin spoken in Taiwan. The latter's standard lect is known in Taiwan as 國語 (Guóyǔ, Kuo-yü), based on the phonology of the Beijing dialect together with the grammar of Vernacular Chinese. Officially, Taiwanese Mandarin is almost identical except for the writing systems with the official Standard Mandarin used in the People's Republic of China, which is called Pǔtōnghuà (普通话).

However, Mandarin as spoken informally in Taiwan has some notable differences in vocabulary, grammar and pronunciation with official Standard Mandarin, differences which have arisen mainly under influence from Taiwanese Hokkien (臺灣閩南語, first language/lect of about 70% of the population of Taiwan), other mother tongues of Taiwan as Hakka (客家話, spoken natively by about 15% of the Taiwanese) and Formosan languages, additionally English, and Japanese from the prior Japanese period.