1. She waved as she drove past.

2. She went past Tom's house.

3. Walk two blocks down the street and go past the city hall.

4. It's long past your bedtime.

5. He hurried past me without stopping.

6. The time for discussion is past.

7. A police car roared past.

8. Heavy trucks kept thundering past.

希望这些例句能帮助你理解"past"这个词的用法。