a festive mood的用法和样例：
- The whole town is in a festive mood.
- Winter is the time everyone is in a festive mood.
- That night the whole town was in a festive mood.
- The worst culprits are the shops, who obviously wish to generate a festive mood before Christmas Day, not afterwards, so that they can sell things.
- I'm just not in a very festive mood right now.