Final answer:
The prepositional phrase 'on his left shoulder' gives more information about where something happens. The words in the phrase include the preposition 'on' and its object 'his left shoulder'. Prepositional phrases are often used in English to give specific details within sentences.
Step-by-step explanation:
In the sentence 'Mitchell Wilson's pet parrot always sits on his left shoulder,' the prepositional phrase is 'on his left shoulder.' The preposition in the phrase is 'on,' and its object is 'his left shoulder'. The phrase 'on his left shoulder' is giving additional information about where the pet parrot is sitting. This is a typical use of prepositional phrases in English grammar. Prepositional phrases can be essential in providing precise details within sentences.
Learn more about Prepositional Phrase