using 后面

我去火车站后面。= I go to the back of the railway station. ----??? what do you want to say? 

我吃后面。--->我在你后面吃=I eat after you've finished.

我和后面。 ----??? what do you want to say?
我给你它后面。 ??? what do you want to say?
我们喝咖啡后面。
我们去饭馆后面。
我说英文，我说中文后面。
我看电视后天。
我看淡影后面。
我去北京后面。
我想打电话后面。

后面，uaually used as a noun, equal to "back", "rear" etc.

      eg. 你的后面有人， there is a man in your back. (there's a man behind you.)

在... ... 后面， = after, behind, later, at the back of..., etc. 

      eg.  在房子后面有棵树， there 's a tree behind the house. 

             我 排在（or排队排在）你后面。I queue up after you.

             那个学生坐在教室后面 that student sits in the back of the classroom.

在... ...之后， = after 

        eg. 我到北京之后就给你打电话。 After I arrive in Beijing, I'll call you.

I don't know whether you're making senteces or doing "choose a word filling the blank "exercise. 

Your sentences are totally, eh, meaningless...

Anyway, learning Chinese is hard, and more exercise is necessary to do. 

CHEER UP :)