| Present "amputate" | I | amputate | |
| Present Continuous "amputate" | I | am amputating | |
| Simple past "amputate" | I | amputated | |
| Past Continuous "amputate" | I | was amputating | |
| Present perfect "amputate" | I | have amputated | |
| Present perfect continuous "amputate" | I | have been amputating | |
| Past perfect "amputate" | I | had amputated | |
| Past perfect continuous "amputate" | I | had been amputating | |
| Future "amputate" | I | will amputate | |
| Future continuous "amputate" | I | will be amputating | |
| Future perfect "amputate" | I | will have amputated | |
| Future perfect continuous "amputate" | I | will have been amputating |