There are three main types of commas that are commonly used, and frequently trip up an unwary writer: 1. In a list 2. Joining with a conjunction 3. Instead of brackets *Commas are NOT meant to be used “wherever you would pause”. Even if you’ve been told this in the past, it is not correct. There are specific rules for using commas , and they don’t include anything about pausing or taking a breath. 1. Commas in a list These are the commas we're most familiar with. Every item on the list is separated by a comma. I bought apples, oranges, grapes, and pears. 2. Commas used with a conjunction This type of comma joins two sentences together with a connecting word such as and, or, but, while, or yet. The comma is placed before the conjunction. We will go to the match, but Jack will go home early. 3. Commas used like brackets If an extra portion of a sentence could be placed in brackets it can be placed between commas instead. A way to test it is to read the sentence without the extra port...