| Present "marvel" | I | marvel | |
| Present Continuous "marvel" | I | am marveling; marvelling | |
| Simple past "marvel" | I | marveled; marvelled | |
| Past Continuous "marvel" | I | was marveling; marvelling | |
| Present perfect "marvel" | I | have marveled; marvelled | |
| Present perfect continuous "marvel" | I | have been marveling; marvelling | |
| Past perfect "marvel" | I | had marveled; marvelled | |
| Past perfect continuous "marvel" | I | had been marveling; marvelling | |
| Future "marvel" | I | will marvel | |
| Future continuous "marvel" | I | will be marveling; marvelling | |
| Future perfect "marvel" | I | will have marveled; marvelled | |
| Future perfect continuous "marvel" | I | will have been marveling; marvelling |