Why do we put two comas between a proper name in a sentence?

Answer 1

Putting two commas ("comas" with only one 'm' means something entirely different--in this case, going into a state of physical-medical unconsciousness) on either side of a proper name in a sentence indicates who you are referring to in the given literary context. It separates the person's name as the human subject from their noun identification in the same sentence.

I.e. "The President of the United States, Joe Biden, will be visiting my city tomorrow."

Here, Joe Biden is the proper name, and President of the United States is the noun identification referring to who/what Joe Biden is by official (job) title accordingly.

Also, you always put a comma in a proper name between a person's last name and their first name when writing them in that order in order to indicate which name is which. I.e. Biden, Joe.

I hope this helps to answer your question!

Answer 2

Without having much context, and just solely based on a guess, one rule is to set off a proper name or noun with commas in a sentence when that proper name functions as a direct address. For example: Amber, please close the door. Because I am directly addressing Amber by name, the name Amber functions as a direct address, which would need to be set off with commas. I hope that helps!

Answer 3

The question is a little ambiguous, but I think it refers to sentences like this:

"The Lord of the Rings is about a hobbit, Frodo Baggins, who must carry an evil magic ring across Middle Earth to the one place where it can be destroyed."

The name Frodo Baggins is offset by commas to show that it is interrupting the flow of the sentence to elaborate on the identify of the hobbit, rather than participating alongside the word hobbit as an equal part in the sentence structure. It is an example of something called a 'supplement,' a construction that adds context to a sentence by providing non-essential information but is not an integral part of it. Without Frodo Baggins, the above sentence would be,

"The Lord of the Rings is about a hobbit who must carry an evil magic ring across Middle Earth to the one place where it can be destroyed."

The two sentences are entirely equivalent, conveying the exact same information with the exact same sentence structure, the only difference is that one interrupts that sentence structure briefly to tell us the hobbit's name.

I hope this helps!