| Present "treat" | I | treat | |
| Present Continuous "treat" | I | am treating | |
| Simple past "treat" | I | treated | |
| Past Continuous "treat" | I | was treating | |
| Present perfect "treat" | I | have treated | |
| Present perfect continuous "treat" | I | have been treating | |
| Past perfect "treat" | I | had treated | |
| Past perfect continuous "treat" | I | had been treating | |
| Future "treat" | I | will treat | |
| Future continuous "treat" | I | will be treating | |
| Future perfect "treat" | I | will have treated | |
| Future perfect continuous "treat" | I | will have been treating |