Present, Future 口を挟む, 口を挟みます [does], will [do] 口を挟まない, 口を挟みません doesn't [do], will not [do] Past 口を挟んだ, 口を挟みました [did] 口を挟まなかった, 口を挟みませんでした didn't [do] Te-form, Continuative 口を挟んで, 口を挟みまして 口を挟まないで, 口を挟みませんで 口を挟まなくて Progressive 口を挟んでいる, 口を挟んでいます [doing], to be [doing] 口を挟んでいない, 口を挟んでいません not [doing] Volitional 口を挟もう, 口を挟みましょう let's [do]!, I/we will [do], I/we intend to [do] 口を挟むまい, 口を挟みますまい I will not [do], I do not intend to [do] Imperative 口を挟め, 口を挟みなさい [do] ! 口を挟むな, 口を挟みなさるな don't [do] ! Request 口を挟んでください please [do] 口を挟まないでください please don't [do] Provisional 口を挟めば if X [does], if X [is ~] 口を挟まなければ if X doesn't [do], if X [is not ~] Conditional 口を挟んだら, 口を挟みましたら if X were to [do], when X [does] 口を挟まなかったら, 口を挟みませんでしたら if X weren't to [do], when X doesn't [do] Potential 口を挟める, 口を挟めます be able to [do], can [do] 口を挟めない, 口を挟めません not be able to [do], can't [do] Passive, Respectful 口を挟まれる, 口を挟まれます is [done] (by ...), will be [done] (by ...) 口を挟まれない, 口を挟まれません isn't [done] (by ...), will not be [done] (by ...) Causative 口を挟ませる, 口を挟ませます makes/will make (someone) [do] 口を挟ませない, 口を挟ませません doesn't/won't make (someone) [do] Causative passive 口を挟ませられる, 口を挟ませられます is made/will be made to [do] (by someone) 口を挟ませられない, 口を挟ませられません isn't made/won't be made to [do] (by someone) ~たい form 口を挟みたい want to [do] 口を挟みたくない don't want to [do]