when I use 上 /下 /东/ 南 /里 etc. how do I know If I have to use 边 /面 /头?
I normally use 面, as in 书在桌子上面, but I want to be sure I'm right.
when I use 上 /下 /东/ 南 /里 etc. how do I know If I have to use 边 /面 /头?
I normally use 面, as in 书在桌子上面, but I want to be sure I'm right.