Present, Future 疑問に思う, 疑問に思います [does], will [do] 疑問に思わない, 疑問に思いません doesn't [do], will not [do] Past 疑問に思った, 疑問に思いました [did] 疑問に思わなかった, 疑問に思いませんでした didn't [do] Te-form, Continuative 疑問に思って, 疑問に思いまして 疑問に思わないで, 疑問に思いませんで 疑問に思わなくて Progressive 疑問に思っている, 疑問に思っています [doing], to be [doing] 疑問に思っていない, 疑問に思っていません not [doing] Volitional 疑問に思おう, 疑問に思いましょう let's [do]!, I/we will [do], I/we intend to [do] 疑問に思うまい, 疑問に思いますまい I will not [do], I do not intend to [do] Imperative 疑問に思え, 疑問に思いなさい [do] ! 疑問に思うな, 疑問に思いなさるな don't [do] ! Request 疑問に思ってください please [do] 疑問に思わないでください please don't [do] Provisional 疑問に思えば if X [does], if X [is ~] 疑問に思わなければ if X doesn't [do], if X [is not ~] Conditional 疑問に思ったら, 疑問に思いましたら if X were to [do], when X [does] 疑問に思わなかったら, 疑問に思いませんでしたら if X weren't to [do], when X doesn't [do] Potential 疑問に思える, 疑問に思えます be able to [do], can [do] 疑問に思えない, 疑問に思えません not be able to [do], can't [do] Passive, Respectful 疑問に思われる, 疑問に思われます is [done] (by ...), will be [done] (by ...) 疑問に思われない, 疑問に思われません isn't [done] (by ...), will not be [done] (by ...) Causative 疑問に思わせる, 疑問に思わせます makes/will make (someone) [do] 疑問に思わせない, 疑問に思わせません doesn't/won't make (someone) [do] Causative passive 疑問に思わせられる, 疑問に思わせられます is made/will be made to [do] (by someone) 疑問に思わせられない, 疑問に思わせられません isn't made/won't be made to [do] (by someone) ~たい form 疑問に思いたい want to [do] 疑問に思いたくない don't want to [do]