| A | B |
| je dois partir | I must leave / I have to leave |
| j'ai dû partir | I had to leave |
| je devrais partir | I ought to leave / I should leave |
| il aurait dû partir | he ought to have left / he should have left |
| tu devras partir | you will have to leave |
| elle peut sortir | she can go out |
| ils ont pu finir | they were able to finish |
| il pourrait voir | he could see / he would be able to see |
| il pouvait voir | he could see / he was able to see |
| il aurait pu faire un effort | he could have made an effort |
| je veux regarder | I want to look |
| ils voudraient venir | they would like to come |
| il aurait voulu être là | he would have liked to be there |
| il avait voulu sortir | he had wanted to go out |
| nous voulions / nous avons voulu | we wanted |