Modal auxiliary can - could
Present | Present continuous | Preterite | Preterite continuous |
can I? can you? can he? can we? can you? can they? | - | could I? could you? could he? could we? could you? could they? | - |
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 | ||
- | - |