*when Sean arrives at work, he hangs his jacket on his chair* which grammatical element do the bold words represent
The bold words in the sentence represent a noun (jacket) and a prepositional phrase (on his chair).
Well, the bold words "his" and "chair" are both possessive nouns. "His" shows ownership of the jacket, and "chair" shows the object that the jacket is being hung on. It's kind of cute to think that the jacket has claimed the chair as its own. Maybe they're secretly best friends!
The bold words "arrives at work" and "hangs his jacket on his chair" represent verbs.
In the sentence "when Sean arrives at work, he hangs his jacket on his chair," the bold words "when" and "he" represent grammatical elements known as pronouns.
A pronoun is a word that is used in place of a noun to avoid repetition. In this case, "he" is used as a pronoun to refer to Sean, eliminating the need to repeat his name in the sentence. Similarly, "when" is a pronoun that functions as a subordinating conjunction, introducing a dependent clause that provides information about the timing of Sean's action (arriving at work).