We use a comma to set off certain words. When writing a letter, we begin by greeting the person to whom we are writing. Always put a comma after the words of the greeting. A greeting looks like this:Dear Mom,Dear… Read more621. Comma Rules – Greeting and Closing in a Letter

A comma is a piece of punctuation used between words or numbers in a sentence. When writing a date, we use a comma to separate the day of the month from the number for the year. Today is June 6,… Read more622. Comma Rules – in a Date

Whenever we speak directly to someone, we put a comma after the name of the person to whom we are speaking. We would most often use this rule in a written story, where one of the characters is speaking to… Read more623. Comma Rules – When Addressing Someone

An interjection is a word that is interjected into a sentence. The interjection is usually an exclamatory word situated at the very beginning of a sentence, set off from the rest of the sentence with a comma. Here are some… Read more624. Comma Rules – After an Interjection

Always use a comma between the name of a city and the name of a state, like this:Chicago, IllinoisMy mother was born in Chicago, Illinois. Also use a comma between the name of a city and a country, like this:Munich,… Read more626. Comma Rules – with City and State

Always use a comma between items in a list when there are at least three items. Look at this list and notice where the commas are placed:My little brother likes to eat hot dogs, chips, and ice cream. We put… Read more627. Comma Rules – in a List

When writing large numbers, place a comma after every three digits, counting from the right. 100,0004,250111,295,0004,150 Large numbers need a comma after every three digits. ▶It’s your turn. Place the comma where it’s needed in this sentence: Jim won $1150… Read more628. Comma Rules – In Large Numbers