The Printable KISS Workbooks Page Notes for Teachers
Embedded Prepositional Phrases

     When a prepositional phrase modifies a word that is inside another phrase, it is said to be "embedded" in the first phrase. [Think of it as being planted in the flower bed of the first phrase.] Other phrases "jump over" phrases to modify a word that is separated from them. 

Embedded: They went {to the store} {on the corner}.

Here, "on the corner" describes the store.
Not Embedded: They went {to the store} {on Monday}.
In this case, "on Monday" explains when they "went." The phrase thus "jumps over" the "to the store phrase" and modifies "went."
The chunking of embedded prepositional phrases:
Image courtesy of Shelagh Manton (in Australia)