Phrasal verbs are multi-word verbs that, like single-word verbs, convey action of the body or mind or occurrences. Phrasal verbs consist of a basic verb + another word or words, usually a preposition or adverb. Example: speak (basic verb) + up (preposition)
Phrasal Verb:
fold something back
Meaning:
to bend a sheet or flap of something back.
Example:
She very carefully folded the page back to mark her place in the book.