Use commas to separate a series of three or more phrases. Example: He ran down the hall, out the door, and into the yard. (The comma before the conjunction and is optional, but I prefer using it.)
Use no commas in a series when all items are joined by or, and, or nor.
Instructions: Place commas where they are needed.
1. The rain splashed against the house onto the sidewalk and into the street.
2. Through the trees around the cabin and down the valley roared the wind.
3. College is to gain knowledge to make new friends and to prepare for a career.
4. The cat climbed up the tree and out on a limb and finally onto the roof.
5. Munching on an apple listening to a recording and sitting on the couch Martha looked very happy.
--For answers scroll down.
1. against the house, onto the sidewalk, and into the street.
2. Through the trees, around the cabin, and down the valley,
3. to gain knowledge, to make new friends, and to prepare for a career.
4. no commas needed
5. Munching on an apple, listening to a recording, and sitting on the couch,
http://www.dailygrammar.com/archive.html. Our lessons are also available to purchase in an eBook and a Workbook format.
from Daily Grammar Lessons Blog