Commas can come before or after any kind of noun or pronoun in a sentence. Perhaps you mean an apostrophe ('), most often used to show possession or to form a contraction.
Only the reciprocal pronouns and indefinite pronouns use a an apostrophe to show possession.
The reciprocal pronouns are: each other, one another
The indefinite pronouns are: all, another, any, anybody, anyone, anything, both, each, either, enough, everybody, everyone, everything, few, fewer, less, little, many, more, most, much, neither, nobody, no one, nothing, none, one, other, others, several, some, somebody, someone, something, such, and they (people in general).
Examples:
My sister and I plan a party for each other's birthdayeach year.
Someone's cell phone was left in the lunch room.
The subjective personal pronouns can be used to form contractions.
The subjective personal pronouns are: I, you, we, he, she, it, me, us, they.
The contractions formed are a shortened version of the subject and verb (or auxiliary verb) of a sentence or clause. The missing letters are indicated by an apostrophe (').
Examples:
I'll be there at seven. (I will bethere at seven.)
You're a good friend. (You are a good friend)
They've remodeled the store. (They haveremodeled the store.)
Never Ever use personal pronouns in a essay or a hypothesis :)
No, I have not visited Gettysburg, Pennsylvania. Commas should go after "visited" and "Pennsylvania" in the sentence.
no
Yes, Mexicans use commas in writing to separate items in a list, to mark off introductory words or phrases, and to separate clauses in a sentence. The use of commas in Mexican Spanish follows the same principles as in other varieties of Spanish.
The pronouns in the nominative case you would use: he, she, it, they The pronouns in the Objective case: him, her, it, them, The pronouns in the Possessive case: his,her, hers, it, their, theirs
smeell sqiuirly
You can find tips on correct use of commas on grammar.ccc.commnet.edu/grammar/commas.htm
You use commas when your writing a list of things like fruit names. You would not just leave it like this apple orange grapes and pear. You would rather use commas like this apple, orange, grapes and pear.
Commas should be used after the first term, stopping at the "and" of the last term, if you don't use oxford commas. For example: There was a dog, cat, bird, fish and monkey. If you do use oxford commas, the comma goes before the and, as well: There was a dog, cat, bird, fish, and monkey. You never use the comma before the last term.
I do not use commas.
inverted commas
No, not always.