Modal auxiliary can - could
Present | Present continuous | Preterite | Preterite continuous |
I can't you can't she can't we can't you can't they can't | - | I couldn't you couldn't she couldn't we couldn't you couldn't they couldn't | - |
Present perfect | Present perfect continuous | Pluperfect | Pluperfect continuous |
- | - | - | - |
Future | Future continuous | Future perfect | Future perfect continuous |
- | - | - | - |
Present | Present continuous | Past | Past continuous |
- | - | - | - |
Infinitive | Imperative |
Infinitive | Imperative | ||
- | - |
Present | Past | ||
- | - |