... SOME PREPOSITIONS The following diagram will give you a general idea of how prepositions work. Often, however,the diagram will not help you to understand certain expressions containing prepositions. ... 1OUT OF This preposition generally means the opposite of INTO (see the diagram). - He walked out of the room angrily when John admonished him.1. Common usage of OUT OF: OUT OF + noun (to lack, ... so I came on foot.ATThis preposition generally is used to indicate a general location. It is not as specific as in. Janeis at the bank.1. Common usage of at:a. at + an address (see on, 1....