THE PREPOSITION AS ADVERB
Many prepositions, such as about, outside, past, and before, can be used as either an adverb or a preposition.
An example using "behind" as an adverb: The boy fell behind.
And as a preposition: The boy fell behind us.
Sometimes, two prepositions can be used consecutively, one as an adverb and another as a preposition.
Example: The boy climbed up onto the roof.
"Up" is used as an adverb, while "onto" is used as a preposition.
Here's another example showing incorrect and a correct usage:
Wrong: Get your nose out my business.
Right: Get your nose out of my business.
"Out" is used as an adverb, and "of" as a preposition.
If you are going to use an adverb-preposition combo like these, please get it right. Don't make me write another one of these posts.