must, have to, should
Долг и совет
| Форма | Смысл | Пример |
|---|---|---|
| must | личная необходимость | I must call my mother. |
| have to | внешнее правило | I have to wear a uniform. |
| should | совет | You should rest. |
| mustn't | запрет | You mustn't smoke here. |
| don't have to | не обязательно | You don't have to come. |
Разница важная: mustn\'t — нельзя, don\'t have to — можно не делать.