CHAPTER 10
Punctuation
You should read this chapter if you need to review or learn about
➜Apostrophes, brackets, colons
➜Commas, dashes, ellipsis
➜Exclamation marks, hyphens
➜Parentheses, periods, question marks, quotation marks
➜Semicolons, slashes
Get Started
Using the correct punctuation helps you convey your ideas exactly as you intend them. In this chapter, you’ll review the basic rules of punctuation. This will help you express yourself clearly in writing. The punctuation marks are arranged in alphabetical order for ease of use.
Apostrophes
The apostrophe (’) is used in three ways:
- To show possession (ownership)
- To show plural forms
- To show where a letter or number has been omitted
Let’s examine each guideline in depth.
-
Use an apostrophe to show possession.
-
With singular nouns or pronouns not ending in s, add an apostrophe and an s.
| a rocket |
a rocket’s red glare |
| a flag |
a flag’s stripes |
| someone |
someone’s wish |
| anyone |
anyone’s game |
-
With singular nouns ending in s, add an apostrophe and an s.
| James |
James’s car |
| waitress |
waitress’s suggestion |
-
If the new word is hard to say, leave off the s.
| James’ car |
waitresses’ suggestion |
-
With plural nouns not ending in s, add an apostrophe and an s.
| men |
men’s shoes |
| people |
people’s feelings |
-
With plural nouns ending in s, add an apostrophe after the s.
| several computers |
several computers’ hard drives |
| three teachers |
three teachers’ lesson plans |
If you are having difficulty deciding where to put the apostrophe and whether to add an s, try following these two steps:
- To figure out if ownership is involved, ask yourself: “To whom does it belong?”
-
If the answer is a singular noun or pronoun, follow that rule. If it’s a plural noun, follow that rule.
You have the phrase “my friends party.”
Ask: To whom does the party belong?
Answer: It belongs to my friend.
Friend is singular. Therefore, the phrase reads: “My friend’s party.”
-
Use an apostrophe to show plural forms.
-
Use an apostrophe to show where a letter or number has been omitted.
Quick Tip
Don’t confuse contractions with possessive pronouns. Study the following chart:
| Contraction |
Possessive Pronoun |
| it’s (it is) |
its |
| you’re (you are) |
your |
| they’re (they are) |
their |
| who’s (who is) |
whose |
Brackets
Brackets are [ ]. Do not confuse them with parentheses, which are curved like this (). Brackets have only two very narrowly defined uses.
-
Use brackets for editorial clarification.
Children’s author Jackie Ogburn puts it this way: “It’s not that ‘message’ isn’t a part of the work. It’s just that it’s usually the least interesting part [emphasis hers].”
-
Use brackets to enclose words that you insert in a quotation.
When you integrate quoted words into a text, you may have to change a few words to fit the structure of your sentences. Enclose any changes you make in brackets.
Original quote: “This pedagogical approach reduces all our work to the literary equivalent of vitamins.” (Ogburn 305)
Quotation with brackets: The primary reason the people involved in creating children’s books detest this attitude so much is that “[it] reduces all our work to the literary equivalent of vitamins.” (Ogburn 305)
Colons
-
Use a colon after an independent clause to introduce a list. Remember that an independent clause is a complete sentence.
The colon is two dots, one on top of each other, like this (:).
If you really want to lose weight, you must give up the following sweets: cake, pie, candy, and cookies.
-
Use a colon after an independent clause to introduce a quotation.
Robert Lawson speaks impatiently of the good intentions that direct the current trends in children’s books: “Some of this scattered band may be educators or psychologists or critics, but they are all animated by a ruthless determination to do children good through their books; it is these people who start the theories and fads that are the bane of authors and illustrators and editors and a pain in the neck to children.” (Fenner, 47)
Quick Tip
Place colons outside closing quotation marks.
-
Use a colon before the part of a sentence that explains what has
just been stated.
Our store has a fixed policy: We will not be undersold.
-
Use a colon after the salutation of a business letter.
Dear Dr. Lewis:
To Whom It May Concern:
-
Use a colon to distinguish chapter from verse in a Biblical citation, hours from minutes, and titles from subtitles.
Song of Songs 4:15
10:15 A.M.
Eating Healthy: A Complete Guide
Commas
Commas are the most frequently used marks of punctuation in English. In fact, commas occur in writing twice as often as all other marks of punctuation combined!
Commas tell us how to read and understand sentences, because they tell us where to pause.
A correctly placed comma helps move readers from the beginning of a sentence to the end.
Here’s the overall comma alert:
As you write, don’t add commas just because you paused in your reading. Since everyone pauses at different times, a pause isn’t a reliable way to judge comma use. Instead, rely on the rules that govern comma use.
And here are those guidelines:
Quick Tip
Remember: The coordinating conjunctions are and, but, for, or, nor, so, yet
-
Use a comma to set off parts of a sentence.
-
Use a comma to separate parts of a compound sentence. Use the comma before the coordinating conjunction.
The movie was sold out, so we decided to have an early dinner.
The movie was a blockbuster, but we arrived early enough to get seats.
Our friends are easy-going, and they don’t get upset when plans change.
-
Use a comma to set off dialogue.
Martha said, “This movie won an Academy Award.”
“This movie,” Martha said, “won an Academy Award.”
“This movie won an Academy Award,” Martha said.
-
Use a comma to separate the parts of an address. Do not use a comma before the zip code in an address.
Rick lives at 163 East Plains Drive, Boston, MA 89012
-
Use a comma after introductory and concluding expressions.
-
Use a comma after an introductory word.
Yes, I will be coming to the retirement party.
However, I won’t be able to bring a macaroni salad.
-
Use a comma after an introductory phrase.
To get a good night’s sleep, you should practice relaxation techniques.
Beginning tomorrow, the store will be open until midnight.
-
Use a comma after an introductory clause.
Although the sky is overcast, I don’t think that it will rain this afternoon.
Since you can’t do the dishes, could you please walk the dog tonight?
-
Use a comma after the greeting of an informal letter.
Dear Mom, Dear Mickey,
-
Use a comma at the close of any letter.
Yours truly, Sincerely,
-
Use a comma after interrupting words and expressions.
-
Use a comma to set off interrupting words and expressions.
The State University of New York, did you know, has 64 campuses scattered across New York State.
-
Use a comma to set off words of direct address (words that tell to whom a remark is addressed).
Nanci, please clean up your room.
Please clean up your room, Nanci.
-
Use a comma with names and titles.
Ms. Barbara Gilson, Editorial Director
Laurie Rozakis, Ph.D.
-
Use a comma to set off words in apposition (words that give additional information about the preceding or following word or expression).
A good eater, my baby will be off the bottle soon.
My baby, a good eater, will be off the bottle soon.
-
Use a comma to set off a nonessential clause (a clause that can be omitted without changing the sentence’s basic meaning).
Elizabeth II, who was born in 1926 in London, is the queen of England.
Prince Charles, Elizabeth’s first child, was born in 1948.
-
Use a comma to separate items in a series. The comma before and in a series of items is optional.
The store had a sale on hot dogs, watermelon, and paper plates.
Quick Tip
Never use commas to set off an essential clause, a clause that cannot be omitted.
Some states retest drivers who are over age 65 to check their ability to drive safely.
-
Use commas to prevent misreading.
-
Use a comma to clarify any potentially confusing sentences.
Confusing: Those who can practice many hours every day.
Clear: Those who can, practice many hours every day.
Rewritten: Those who can practice, do so many hours every day.
Confusing: Luisa dressed and sang for an enthusiastic crowd.
Clear: Luisa dressed, and sang for an enthusiastic crowd.
Rewritten: After Luisa dressed, she sang for an enthusiastic crowd.
Of course, as the rewritten examples show, you’re usually much better off revising the sentences so there is no possibility of your audience misreading your words.
-
Use commas with numbers. Do not use commas when writing telephone numbers, page numbers, or years.
-
Use a comma between the day of the month and the year.
| December 7, 1941 |
July 20, 1969 |
-
Use commas to show thousands, millions, and so on.
| 5,000 |
50,000 |
500,000 |
5,000,000 |
Dashes
A dash (—) is not the same as a hyphen. The dash, or a pair of dashes, lets you interrupt a sentence to add emphasis with additional information. Use dashes lightly or you risk creating a breathless, overly informal style.
Use a dash to emphasize an example, a definition, or a contrast.
Two of the strongest animals in the jungle—the elephant and gorilla—are vegetarians.
Two of the strongest animals in the jungle are vegetarians—the elephant and gorilla.
Ellipsis
The ellipsis (three spaced dots) is used to show that you have left something out of a passage you are quoting. You can also use ellipsis to show a pause in a conversation.
-
Use the ellipsis to show that you have deleted words or sentences from a passage you are quoting.
Abraham Lincoln said: “Four score and seven years ago our fathers brought forth ...a new nation, conceived in liberty and dedicated to the proposition that all men are created equal.”
-
Use the ellipsis to show a pause or interruption.
“No,” I said. “I . . . I need some time to think about your offer.”
Quick Tip
Don’t use the ellipsis to show that words have been omitted from the beginning of a sentence. Just omit the words and begin the quote.
Exclamation Marks
Use an exclamation mark after an exclamatory sentence.
How dare you say that to me!
You can’t possibly go out wearing that dress!
Hyphens
A hyphen (-) is smaller than a dash. Use a hyphen to show a break in words. Traditionally, a hyphen was used to show a word break at the end of a line. However, modern computer software has virtually eliminated this use of the hyphen.
-
Use a hyphen in certain compound nouns.
pint-sized great-grandmother
-
Use hyphens in written-out fractions and in written-out compound numbers from twenty-one to ninety-nine.
Parentheses
Use parentheses to set off nonessential information. In essence, the information in the parentheses is a nonessential modifier because it gives the reader additional information that is not crucial.
-
Use parentheses to enclose additional information in a sentence.
Capitalize all proper nouns and proper adjectives (see Chapter 11).
-
Use parentheses to enclose numbers or letters.
To prepare spaghetti, follow these steps in order: (1) Bring a pot of lightly salted water to boil; (2) add pasta; (3) cook about 10 minutes, to taste.
Periods
-
Use a period after a complete sentence.
The shrimp’s heart is in its head.
In the Arctic, the sun sometimes appears to be square.
-
Use a period after most abbreviations and initials. If an abbreviation comes at the end of
a sentence, do not add another period.
| Dr. |
Ms. |
Jr. |
John F. Kennedy |
-
Don’t use a period after acronyms.
-
Use a period after each Roman numeral, letter, or number in an outline.
Question Marks
Use a question mark after a question.
Where is the complaint desk?
Will the store be open late tonight?
Quotation Marks
-
Use quotation marks to set off a speaker’s exact words.
“Did you eat the entire bag of chips?” Debbie squealed.
-
Use quotation marks to set off the titles of short works such as poems, essays, songs, short stories, and magazine articles.
“The Lottery” by Shirley Jackson (short story)
“Self-Reliance” by Ralph Waldo Emerson (essay)
“We’ve Only Just Begun” by the Carpenters (song)
-
Use single quotation marks to set off quoted material or the titles of short works within a quotation enclosed by double quotation marks.
“Did you read ‘The Ransom of Red Chief’ last night?” the teacher asked.
-
Use quotation marks to set off words used for emphasis or a definition.
The proposed “tax reform” is really nonsense
Semicolons
A semicolon is a comma and period combined, like this (;). The semicolon’s structure shows you that the semicolon is a hybrid of a comma and a period. It’s a stronger stop than a comma but not as strong as a period.
-
Use a semicolon between closely related independent clauses when the coordinating conjunction has been left out.
The chef cooked far too much chicken; we eagerly devoured the excess.
-
Use a semicolon between main clauses connected by conjunctive adverbs such as however, nevertheless, moreover, for example, and consequently.
Sarah wanted to be a doctor; however, she faints at the sight of blood.
-
Use a semicolon to join independent clauses when one or both clauses contain a comma.
Glenn, who is an accomplished musician, wanted to perform at his sister’s wedding; but he quickly discovered that Marcia, the maid of honor, had other plans for the entertainment.
Slashes
This is a slash (/).
-
Use slashes to separate lines of poetry. Leave a space before and after the slash to show when the line of poetry ends.
As written:
The band, as fairy legends say,
Was wove on that creating day,
When He, who called with thought to birth
Yon tented sky, this laughing earth.
In running text:
The band, as fairy legends say, / Was wove on that creating day, / When He, who called with thought to birth / Yon tented sky, this laughing earth.
-
Use slashes to show choice.
Devon broke the on/off switch on the toaster.
-
Use slashes in numerical fractions or formulas.
1/2 3/4
✔ Punctuation helps readers identify clusters of words between and within sentences.
✔ Between sentences, the most common mark of punctuation is the period; within sentences, the most common mark is the comma.
✔ Hyphens separate word parts; dashes separate sentence parts or sentences.
✔ Semicolons separate complete sentences; colons show lists.