已认证理想和行动要结合起来，只说不行，要紧的是做。
关于“在家里”的英语表达，以下是综合整理：
一、核心翻译
- at home
这是最常用的表达，例如：
- The children are playing at home.
- I prefer to stay at home on weekends.
扩展表达
- in one's home
强调“自己家中”，例如：
- The family gathering was held in my home.
- on one's residence
适用于更正式的场合，例如：
- The diplomat resides in his official residence.
- within the walls of my own abode
更具文学化表达，例如：
- The artist found inspiration within the walls of his home.
- in my domicile
法律文书等正式文本中常用，例如：
- The tenant is required to maintain the domicile in good condition.
二、相关短语与用法
常用短语
- stay at home： 强调“待在家里”，例如： - The weather is bad, so I'll stay at home. - stay in
- We'll stay in my grandparents' house for the holidays.
- keep indoors：侧重“待在室内”，例如：
- It's cold outside, please keep indoors.
- lodge with：表示“寄宿他人家中”，例如：
- The students lodged with a local family during the summer.
- on one's own dunghill：
比喻“家中称王”，例如：
- Every cock is king on its own dunghill.
- keep the house：口语化表达，意为“待在家里”，例如：
- The kids got into trouble, so we had to keep the house.
三、注意事项
介词选择：使用 at home作为副词短语时无需加介词，例如：
*He always finishes his homework at home.*
语境差异：
日常交流优先使用 at home，
正式文件建议采用 in one's home/domicile等表达。通过以上表达，可根据具体语境灵活选择最贴切的翻译。
