| 現在 (Present) "doubt" | I | doubt | |
| 現在継続 (Present Continuous) "doubt" | I | am doubting | |
| 単純な過去 (Simple past) "doubt" | I | doubted | |
| 過去継続 (Past Continuous) "doubt" | I | was doubting | |
| 現在完了 (Present perfect) "doubt" | I | have doubted | |
| 連続完璧な存在 (Present perfect continuous) "doubt" | I | have been doubting | |
| 過去完了 (Past perfect) "doubt" | I | had doubted | |
| 過去の完璧な連続 (Past perfect continuous) "doubt" | I | had been doubting | |
| 未来 (Future) "doubt" | I | will doubt | |
| 連続将来 (Future continuous) "doubt" | I | will be doubting | |
| 未来完了 (Future perfect) "doubt" | I | will have doubted | |
| 連続完璧な将来 (Future perfect continuous) "doubt" | I | will have been doubting |