at home为什么不加s. in their homes为什么加s

at home为什么不加s. in their homes为什么加s They will study at home on computers .为什么home 不加s呢?拜托了. no one was home.home前为什么不加at I stay at home on Saturdays 为什么星期六加s at home home加s么 at home/(in the/one's home)为什么at后面不要the? at home不用加the at the baker's为什么要加the He has little friends,so he often stays at home这句话错在哪?He has little friends,so he often stays at home我查了下,说是stay不加s,为什么不加s? 为什么at home 不加the 而at the race加the? at home 为什么不用in 举例说明 如果用in 后面要加the吗at home 为什么不用in 举例说明 如果用in 后面要加the吗 为什么home要加s? 大哥哥大姐姐们,1.at home和in family的区别2.Daming and Li lei's dask is next to the wall.两个人为什么desk不加s 为什么后面用is 3.photo的复数是直接加s还是es 4.It's the s____ soup.根据首字母填上一个合适的单 on one ’s way home中home前面为什么不加to in the kitchen为什么要有the 那么at home为什么不要加the school 和home They're at school,我怎么听出了S的音呢,是不是at和school 连读了,另外home和school前面为什么不加the home是可数名词为什么不加A或THE 是地点副词为什么前有可加AT? stay at home为什么要加at?at可以省略 Kids will study at home on computers.为什么computer要加s?