*A basic rule for using commas include putting commas directly before a conjunction to separate two independent clauses. Commas are also used after introductory words, phrases and clauses. Another basic use of commas is to separate information that interrupt or provide information within a sentence.
*Commas are usually used when separating items in a list and writing dates and addresses. Another rule for using a comma is to introduce or end a quote within a sentence. Commas are used in many different contexts and languages, and mean "something cut off or a short clause." Commas are written with the same shape as an apostrophe or as a single quotation mark.
*Commas are also used to separate adjectives that modify the same noun. For example: "The fresh, juicy orange was delicious." Commas are used to offset negation in a sentence. For example: "Turn left, not right." In most cases, commas are used before every sequence of three numbers in numbers with four or more digits. For example: "I drove over 1,500 miles last month." There are also many other examples of proper comma usage.