sit in his seat.为什么用in,平时不是sit on吗 用on和用in有什么区别?

sit in his seat.为什么用in,平时不是sit on吗 用on和用in有什么区别? sit in 和sit on 有什么用法和区别、? sit in,sit on,sit at,sit down的区别 sit in a chair sit on区别 sit in 与sit on 的区别? sit on与sit in的区别 sit on ,sit at ,sit in的区别 sit ()the back row用in还是on为什么 sit on table 与sit in table 区别 in,at和on有什么区别 on the campus在校园里不是要用in为什么用on? the chair is very comfortable to sit in 这个地方为什么要用in而不用on 坐在椅子上用sit on the chair 还是sit in the chair