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