Words such as 上邊, 左邊, 前邊, 中間, 對面 are position words. Some of the basic syllables are:
上 - up
左 - left 中 - middle 右 - right
下 - down
前 - front 裡 - in 後 - back 外 - out
Usually, add 邊 to make "on the left", "above", "outside" etc.
Position words can be used in two ways. Compare:
Noun (+ 的) + position word:
車(的)外邊
outside the car
房子(的)後邊
behind the house
桌子(的)對面
opposite the table
Position word + 的 + noun (here the 的 is /mandatory/).
外邊的車
the car outside (i.e. the car which is outside)
後邊的房子
the house behind (the house which is behind)
對面的桌子
the opposite table (the table which is opposite / across the
way)
Notes:
When 上邊, 下邊, 裡邊 and 外邊 are modified by other nouns, the character 邊 can be omitted:
房子(的)裡(邊)
inside the house
桌子(的)上(邊)
on the table
教室(的)外(邊)
outside the classroom
Do /not/ use 裡邊 in the following two cases:
After geographical names such as 中國, 北京 etc:
她在北京學習漢語。
She studies Chinese in Beijing.
but not 她在北京裡邊學習漢語。
美國有很多大學。
There are many universities in America.
but not 美國裡邊有很多大學。
In a phrase of the form "在 + place, building or organisation":
我在銀行工作。
I work in a bank.
but not 我在銀行裡邊工作。
他們在閱覽室看書。
They are reading books in the reading-room.
but not 他們在閱覽室裡邊看書。