Welcome to my class

Today I will teach about Preposition.at，on， in.

Part3

位置介系詞(Prepositions of Location): in，at，on 及零介系詞

In	At	On	零介系詞
(the) bed the bedroom the car (the) class the library school	class home the library the office school work	the bed the ceiling the floor the horse the plane the train	downstairs downtown inside outside upstairs uptown