What part of speech is behind?

"Behind" can be several parts of speech depending on its context. Here are the most common:

* Preposition: This is the most common usage. It shows the location of something relative to something else: "The cat is hiding behind the sofa."

* Adverb: This usage describes how something is done or where something is located: "The car parked behind the other vehicles."

* Adjective: This usage describes something that is located in the back: "The behind seats of the car were dirty."

To determine the part of speech, look at the sentence structure and the role the word plays.