| 1 | He ran away lest he should be seen. | |
| 2 | They spoke in whispers lest they should be heard. | |
| 3 | It is your duty, lest you be ostracized by the better half of society. | |
| 4 | I should leave now lest I take something away from you! | |
| 5 | We went over the document again and again lest we should miss any of the main points. |