Use a comma before these joining words when you are constructing a compound sentence. (Hint: Remember the word formed downward by the first letters of each joining word.)
d

+
In the examples following, underlined spaces indicate that a comma is needed.
I want to go, but you want to stay.
He died before she was born _ so she never knew him.
Put a comma between items in a series.
2.
Wasp
3.
The sting of a bee
or hornet can cause a severe reaction.
Soon the students will retum , the halls will be buzzing , and the studying
will begin
A comma goes after an introductory expression or before an expression that follows the sentence
but is somewhat separated from the rest of the sentence (doesn't flow easily into the sentence).
Well, I haven't seen anyone yet.
b when the time comes , we will be ready.
It's tiring to go to school all day , isn't it?
Put commas around the name of a person spoken to or addressed.
Rick , bring that into the classro
b I know, Jan, that you are missing your family.
Put commas around an expression that interrupts the flow of the sentence.
The facts, therefore, do not support your argument.
sroom
5.

Hurry i am on the semester test which theme is evident in this excerpt from robert frost's "mending wall"? but at spring mending-time we find them there. i let my neighbor know beyond the hill; and on a day we meet to walk the line and set the wall between us once again. we keep the wall between us as we go. to each the boulders that have fallen to each. and some are loaves and some so nearly balls we have to use a spell to make them balance: "stay where you are until our backs are turned! " we wear our fingers rough with handling them. oh, just another kind of out-door game, one on a side. it comes to little more: there where it is we do not need the wall: he is all pine and i am apple orchard. my apple trees will never get across and eat the cones under his pines, i tell him. he only says, “good fences make good neighbors." spring is the mischief in me, and i wonder if i could put a notion in his head: "why do they make good neighbors? isn't it where there are cows? but here there are no cows. before i built a wall i'd ask to know what i was walling in or walling out, and to whom i was like to give offence. . " a. the human desire for material gain b. the influence of financial constraints c. the positive effects of friendship d. the uncertain nature of human relations e. the futility of human yearning