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Japanese verb conjugations and adjective declensions


This is a list of Japanese verb conjugations. Almost all of these are regular, but there are a few Japanese irregular verbs, and the conjugations of the very few irregular verbs are also listed. Japanese verb conjugation is the same for all subjects, first person ("I", "we"), second person ("you") and third person ("he/she/it" and "they"), singular and plural. The plain form of all verbs ends in u. In modern Japanese, there are no verbs, at least in the plain form, ending in fu, pu, or yu, no verbs ending in zu other than certain する forms (such as 禁ず kin-zu), and (, ; to die) is the only one ending in nu.

This article describes a set of conjugation rules widely used in order to teach Japanese as a foreign language. However, Japanese linguists have been proposing various grammatical theories for over a hundred years and there is still no consensus about the conjugations. Japanese people learn the more traditional "school grammar" in their schools, which explains the same grammatical phenomena in a different way with different terminology (see the corresponding Japanese article).

Verb conjugates are often grouped into consonant-stems (五段動詞 godandōshi?) (type I) and vowel-stems (一段動詞 ichidandōshi?, いる, iru and える eru forms) (type II). The plain form of a type I verb has an u sound (u, tsu, ru, ku, gu, bu, mu, su), the ~ます -masu form has an i sound (i, chi, ri, ki, gi, bi, mi, shi), and the negative form has an a sound (wa, ta, ra, ka, ga, ba, ma, sa). The potential form has an e sound (e, te, re, ke, ge, be, me, se) and the volitional form has an おう ō sound (ō, tō, rō, kō, gō, bō, mō, sō).


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