| Present "grate" | I | grate | |
| Present Continuous "grate" | I | am grating | |
| Simple past "grate" | I | grated | |
| Past Continuous "grate" | I | was grating | |
| Present perfect "grate" | I | have grated | |
| Present perfect continuous "grate" | I | have been grating | |
| Past perfect "grate" | I | had grated | |
| Past perfect continuous "grate" | I | had been grating | |
| Future "grate" | I | will grate | |
| Future continuous "grate" | I | will be grating | |
| Future perfect "grate" | I | will have grated | |
| Future perfect continuous "grate" | I | will have been grating |