| A | B |
| I must study | je dois étudier |
| I have to leave | je dois partir |
| you (s.) must speak to him | tu dois lui parler |
| he must be tired | il doit être fatigué |
| she must have studied | elle a dû étudier |
| we have to wake up at 6:30 | Nous devons nous réveiller à 6h30. |
| He has to call me. | Il doit me téléphoner. |
| They (m.) owe me $50. | Il me doivent cinquante dollars. |
| I owe you (s.) $5. | Je te dois sinq dollars. |
| You (pl.) have to brush your hair. | Vous devez vous brosser les cheveux. |
| You (pl.) must not leave before 5:00. | Vous ne devez pas partir avant cinq heures. |
| You (s.) must have seen this movie. | Tu as dû voir ce film. |
| They (f.) have to drink their milk. | Elles doivent boire leur lait. |
| I have to eat lunch now. | Je dois déjeuner maintenant. |
| Do you (s.) have to sing? | Dois-tu chanter? |
| Must they (m.) arrive at noon? | Doivent-ils arriver à midi? |