| Forma afirmativa> | Forma negativa> |
|---|---|
| I must play | I mustn't play |
| You must play | You mustn't play |
| He must play | He mustn't play |
| She must play | She mustn't play |
| It must play | It mustn't play |
| We must play | We mustn't play |
| You must play | You mustn't play |
| They must play | They mustn't play |