free boarder

例句：

1. 1.The free boarder was allowed to stay for a month.
   这个免费寄宿生被允许留宿一个月。
2. 2. He decided to take in a free boarder to help with the household chores.
   他决定收留一个免费寄宿生来帮忙做家务。
3. 3.The hotel provided free boarding for guests who stayed for more than one night.
   该酒店为过夜的客人提供免费住宿。