How do you use dashes correctly in a sentence?
Use dashes to mark the beginning and end of a series, which might otherwise get confused, with the rest of the sentence: Example: The three female characters—the wife, the nun, and the jockey—are the incarnation of excellence. Dashes are also used to mark the interruption of a sentence in dialogue: Example: “Help!
A dash is expressed as an "em dash" ( — ) in printing, is expressed in plain text as two hyphens ( -- ) and is used in place of a comma, colon or semicolon for greater emphasis. It denotes a major break or pause and should not be overused.
- To set off material for emphasis. Think of dashes as the opposite of parentheses. ...
- To indicate sentence introductions or conclusions. ...
- To mark “bonus phrases.” Phrases that add information or clarify but are not necessary to the meaning of a sentence are ordinarily set off with commas. ...
- To break up dialogue.
Use an em dash with an exclamation point or question mark, but not with a comma, a colon, or a semi-colon (and only rarely with a period). If only I could have saved him—if only! —he'd still be alive. I wasn't sure if I could—did I dare?
There are actually three different types of dashes: the em-dash, the en-dash, and the 3-em dash. The em-dash can be used to replace parentheses, colons, and commas. Generally, using the em-dash makes the writing style more informal—as if you were writing to an old friend.
Use dashes to set off an idea or an appositive within a sentence. A dash (—) is a punctuation mark used to set off an idea within a sentence and may be used alone or in pairs. Dashes interrupt a thought in a more dramatic way than a phrase enclosed in commas, but less theatrically than parentheses.
The is used to refer to specific or particular nouns; a/an is used to modify non-specific or non-particular nouns. We call the the definite article and a/an the indefinite article. For example, if I say, "Let's read the book," I mean a specific book.
The most common use of en or em dashes (also called 'rules') in the running prose of a scholarly paper is to mark parenthetical clauses, in which case the dashes indicate a more pronounced break in the sentence than commas would and highlight the parenthetical clause more than parentheses would.
Answer: a correct sentence should look like a sentence with no grammatical errors, proper punctuation and usage of correct spellings.
Quick Use: Use a dash to connect independent clauses or to inerrupt a main clause in a way that creates dramatic effect. Dashes function in two ways: to signal interruptions in a sentence (basically like parentheses), and to connect independent clauses.
What does a dash between words mean?
A hyphen joins two or more words together while a dash separates words into parenthetical statements.
The is used to refer to specific or particular nouns; a/an is used to modify non-specific or non-particular nouns. We call the the definite article and a/an the indefinite article. For example, if I say, "Let's read the book," I mean a specific book.

Here's an example: I have a big test tomorrow; I can't go out tonight. The two clauses in that sentence are separated by a semicolon and could be sentences on their own if you put a period between them instead: I have a big test tomorrow.