Present, Future 止す, 止します [does], will [do] 止さない, 止しません doesn't [do], will not [do] Past 止した, 止しました [did] 止さなかった, 止しませんでした didn't [do] Te-form, Continuative 止して, 止しまして 止さないで, 止しませんで 止さなくて Progressive 止している, 止しています [doing], to be [doing] 止していない, 止していません not [doing] Volitional 止そう, 止しましょう let's [do]!, I/we will [do], I/we intend to [do] 止すまい, 止しますまい I will not [do], I do not intend to [do] Imperative 止せ, 止しなさい [do] ! 止すな, 止しなさるな don't [do] ! Request 止してください please [do] 止さないでください please don't [do] Provisional 止せば if X [does], if X [is ~] 止さなければ if X doesn't [do], if X [is not ~] Conditional 止したら, 止しましたら if X were to [do], when X [does] 止さなかったら, 止しませんでしたら if X weren't to [do], when X doesn't [do] Potential 止せる, 止せます be able to [do], can [do] 止せない, 止せません not be able to [do], can't [do] Passive, Respectful 止される, 止されます is [done] (by ...), will be [done] (by ...) 止されない, 止されません isn't [done] (by ...), will not be [done] (by ...) Causative 止させる, 止させます makes/will make (someone) [do] 止させない, 止させません doesn't/won't make (someone) [do] Causative passive 止させられる, 止させられます is made/will be made to [do] (by someone) 止させられない, 止させられません isn't made/won't be made to [do] (by someone) ~たい form 止したい want to [do] 止したくない don't want to [do]