| Attribute | Value | En. example | En. tag | RTags |
| Aux.Type | Primary | had (eaten) | VPPa | VPD |
| Modal | would (eat) | VM | VM | |
The auxiliaries in English subdivide into the primary verbs `be', `have', and `do', which can also function as main verbs, and the modal auxiliaries such as `can', `will', and `would', which are uninflected, and always function as auxiliaries. These are language-specific values.