| Present "adjoin" | I | adjoin | |
| Present Continuous "adjoin" | I | am adjoining | |
| Simple past "adjoin" | I | adjoined | |
| Past Continuous "adjoin" | I | was adjoining | |
| Present perfect "adjoin" | I | have adjoined | |
| Present perfect continuous "adjoin" | I | have been adjoining | |
| Past perfect "adjoin" | I | had adjoined | |
| Past perfect continuous "adjoin" | I | had been adjoining | |
| Future "adjoin" | I | will adjoin | |
| Future continuous "adjoin" | I | will be adjoining | |
| Future perfect "adjoin" | I | will have adjoined | |
| Future perfect continuous "adjoin" | I | will have been adjoining |