[171.0]Japaneseverbsareclassifiedintothreegroups. [171.0]Eachgrouphasitsownconjugationoftheないform. [171.0]Grouptwoistheeasiestone. [171.0]るjustbecomesない. [171.0]Forexample, [171.0]おきるbecomesおきない. [171.0]たべるbecomesたべない. [171.0]Theないformisusedwhenyoumakenegativesentences. [171.0]Forexample, [171.0]\"Idon'twatchamovie.\"is\"えいがをみない.\" [171.0]Itsoundscasual [171.0]soifyouwanttosayitmorepolitely, [171.0]usethenegativeますformlike\"えいがをみません.\" [171.0]Theないformhasthepasttense. [171.0]Forexample, [171.0]\"Ididn'twatchamovie.\"is\"えいがをみなかった.\" [171.0]GroupthreeiseasierthanGroupone, [171.0]becausethereareonlytwopatterns. [171.0]するbecomesしない. [171.0]Then,くるbecomesこない. [171.0]Forexample, [171.0]そうじするbecomesそうじしない. [171.0]もってくるbecomesもってこない. [171.0]Withtheないform, [171.0]youcancreatesentenceslike [171.0]\"Pleasedon'tdoit\", [171.0]\"Ihavetodoit\" [171.0]and\"Idon'thavetodoit.\" [171.0]Grouponeisthemostcomplicatedone. [171.0]Thelastvowelうbecomesあandyouaddない. [171.0]Forexample, [171.0]きくbecomesきかない. [171.0]まつbecomesまたない. [171.0]Grouponehastwoexceptions. [171.0]Thefirstone. [171.0]Ifthelastletterisう, [171.0]itbecomesわ. [171.0]Forexample, [171.0]あうbecomesあわない. [171.0]かうbecomesかわない. [171.0]Thesecondone. [171.0]あるbecomesない,notあらない. [171.0]あるbecomesない,notあらない.