| 1. | Hiding their books, the boys ran to the park. |
| 2. | Fearing the dark, the children quickened their pace. |
| 3. | The school bell, ringing in the night, could be heard. |
| 4. | The fire alarm, clanging its message, sounded. |
| 5. | Raising the main sail, the sloop tacked up-wind. |
| 6. | Filling the main sail, the wind gusted. |
| 7. | The sailor, sitting near the tiller, steered the boat. |
| 8. | The captain, standing on the bow, shouted commands. |
| 9. | Bowing their heads, the congregation prayed. |
| 10. | Participial phrases beginning sentences need commas. |
| 11. | Following the comma, the main sentence begins. |
| 12. | Adjective phrases occurring after the noun may need commas. |
| 13. | Setting off unnecessary phrases, the writer boldly writes. |
| 14. | Phrases, resting before or after a noun, modify the noun. |
| 15. | Use commas marking off unnecessary phrases in the sentence. |
| 16. | A phrase giving no needed information has commas. |
| 17. | A phrase establishing necessary information has no commas. |
| 18. | Deciding on commas, the writer must be careful. |
| 19. | The writer, writing participial phrases, knows his craft. |
| 20. | Turning off his computer, this writer must stop for now. |