Use a comma to separate the elements in a series (three or more things), including the last two. "He hit the ball, dropped the bat, and ran to first base."
Use a comma + a little conjunction (and, but, for, nor, yet, or, so) to connect two independent clauses, as in "He hit the ball well, but he ran toward third base."
Yes, Mexicans speak spanish and spanish uses commas.
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.
I do not use commas.
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.
No, not always.
inverted commas
Only when you are listing should you use commas between adjectives. Hope this helped :)
That is a general rule, but there are exceptions to virtually every rule. It would be better to avoid such commas.
No
After the day but not necessarily after the year