Punctuation
When we talk we pause, wave our hands
about, roll out eyes to let people know
what meaning we intend. When we write,
however, we can't rely on such hints.
So in order to give readers clues about
how to interpret the text we use punctuation.
Principle Punctuation Marks
INTERNAL MARKS
These are used to separate, inclose, or indicate the relation between elements within a sentence:
- Comma (,) the most common mark,
indicates a separation between words,
phrases, and clauses
- Semicolon (;) separates constructions
of equal rank, not with the finality
of a period but more definitely than
a comma
- Colon (:) is a mark of anticipation,
pointing to what follows: formal quotations,
series too long or too complex to
be prefaced by commas, and occationally
before explanatior statements
- Dash (—) is a mark of separation
or interruption, more emphatic than
a comma, less frequently used
- Hyphen (-) is used to connect
one part of a word to another, or
to connect several words
- Parentheses ( ) are used
to enclose explanatory statements
not built into the structure of a
sentence
END STOPS These are used to mark the end of a sentence:
- Period (.) at the end of statments, after
abbreviations, in decimals, and in dollars and cents
- Question mark (?) after direct questions
(How are you?) but not after indirect questions (He
asked me how you were.)
- Exclamation mark (!) is used at the end of
an exclamation or a vigorously stressed sentence;
often overused
OTHER MARKS
- Quotation marks (" ") are
used to enclose speech in conversation and words or
statements quoted from other sources
- Apostrophe (') is used in contractions (words
made up of two words pushed together: isn't); they
are used to show posession (judge's decision)
- Ellipses (...)are used when you leave words
out; for example, in quotations when you want to quote
only part of what someone has said. They are also
used to show a thought has trailed off...
- Brackets ([ ]) are used to enclose words
inside a quotation; they indicate that the words enclosed
are the writer's own words and not the words used
in the source. They are also used when you have parentheses
within parentheses
- Slash (/) most commonly used to indicate
two possible words can be used in a sentence (and/or)
- Asterisk (*) / Dagger (†) are
used to signal further explanation in either a foot
note or an endnote
Most questions about punctuation arise when you have
a choice of one mark or another, or perhaps of using
no mark at all.
There are no precise rules about punctuation (contrary
to what you might have heard in school)—there is some
general advice, but you will find different practices
in books, magazines, and newspapers. The general practice,
today, is to keep punctuation use relatively light.
Nobody remembers how to use all punctuation marks all
the time. People who write a lot become familiar with
certain punctuation marks, especially the common ones
such as periods, question marks, and commas. They often
have to look up how to use brackets, colons, apostrophes,
dashes, even semi-colons.
Much of the time, punctuation is a matter of common
sense: use the mark that will make the sentence sound
closest to the way you speak; use the mark that feels
right.
Online Resources
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