| Present "underline" | I | underline | |
| Present Continuous "underline" | I | am underlining | |
| Simple past "underline" | I | underlined | |
| Past Continuous "underline" | I | was underlining | |
| Present perfect "underline" | I | have underlined | |
| Present perfect continuous "underline" | I | have been underlining | |
| Past perfect "underline" | I | had underlined | |
| Past perfect continuous "underline" | I | had been underlining | |
| Future "underline" | I | will underline | |
| Future continuous "underline" | I | will be underlining | |
| Future perfect "underline" | I | will have underlined | |
| Future perfect continuous "underline" | I | will have been underlining |