1. You can chat to other people who are online.
2. They can place their orders online.
3. He spends hours online every night.
4. Our data shows that sixty percent of our magazine subscribers use their mobile phones to read.
5. An online office mixer.
6. Recently, she bought a gas heater online!
7. Vista should be easier to update online.
8. What do children do online？
9. Both players are online.
10. Go to the website today and you can unsubscribe online.
11. You can book seats online.
12. Online shopping has become the trend.
13. I bought some clothes online for my mom.
14. We should get this online right away.
15. An online tutorial is provided.
16. I keep getting disconnected when I'm online.
这些例句展示了"online"作为形容词和副词的不同用法，包括在线聊天、在线购物、在线预订等。希望这些例句对你有所帮助。