Where Do I Put Commas? - Punctuation for Meaning
our simple words help to explain the use of commas:
before, after, within, and around.
Here are four basic rules for the use of commas:
A comma is placed before a conjunction (and, but, yet,
or, nor, for, so) that joins two complete sentences (independent
clauses). For example,
I wrote my last paper gradually, and this process was
A comma is placed after an introductory phrase or clause.
After writing all night, I wasn't sure if my paper made
Commas are placed within a series of items. For example,
I like to start composing with brainstorming, mapping,
Commas are placed around a nonessential phrase or clause.
Procrastination, which too many students still practice,
usually leads to anxiety and frustration.
For a more detailed and more formal explanation, see The New
Century Handbook or a similar source.