| Present "know" | I | know | |
| Present Continuous "know" | I | am knowing | |
| Simple past "know" | I | knew | |
| Past Continuous "know" | I | was knowing | |
| Present perfect "know" | I | have known | |
| Present perfect continuous "know" | I | have been knowing | |
| Past perfect "know" | I | had known | |
| Past perfect continuous "know" | I | had been knowing | |
| Future "know" | I | will know | |
| Future continuous "know" | I | will be knowing | |
| Future perfect "know" | I | will have known | |
| Future perfect continuous "know" | I | will have been knowing |