1. The ceremony commences at 9 o'clock sharp.
- 典礼将于9点准时开始。

2. The project commences next week.
- 项目将于下周开始。

3. The race commences at the sound of the starting gun.
- 比赛在发令枪响起时开始。

4. The concert commences with a beautiful orchestral piece.
- 音乐会以一首美妙的管弦乐曲开始。

5. The meeting commences with a brief introduction of the agenda.
- 会议以简要介绍议程开始。

6. The festival commences with a lively parade through the streets.
- 节日以一场热闹的游行开始。