Do you use a dash a lot? What about a hyphen? Many people can not tell the difference between them. Some people even think they are the same thing. If you are one of them, check this out and master the dash.

Steps

1. Know the kinds of dashes. A dash is noticeably longer than a hyphen. There are several different dashes, but the most commonly used are the en dash (–) and the em dash (—). They are so named because they are the same width as the letter n and m, respectively.
   
   

• The figure dash is a special typographical character most often used in phone numbers. Since it's normally unavailable in word processing, you can simply use a hyphen. (Example: 408‒555‒6792, or use 408-555-6792.)
  
  
• An en dash (–) is most commonly used to indicate a range of numbers. It is longer than a hyphen although a hyphen with spaces surrounding it can be used if a dash is not available. In Microsoft Word, doing this will automatically change the hyphen into an en dash. (Example: August 13–August 18, or pages 29–349. Note that there should be no space around the en dash.)
  
  
• An em dash is most often used to indicate a break in thought or to set an appositive [2] off from the rest of the sentence. It can also be used to show a date when the time frame in question has not yet ended (Example: John Smith, 1976—).
  The remainder of this article will address using the em dash.
  

1. Identify an independent clause: Before you begin using a dash in a sentence, you must know what an independent clause is. An independent clause is one that can stand on its own because it contains both a subject and a verb, for example:
   
   • I love pizza.
   • My mom makes me dinner.
2. Use the em dash: Understanding how to identify an independent clause, you're ready to begin using a dash.
   
   
   • Most commonly, a dash connects an independent clause with another, with a separate or interrupting thought plus a conjunction like or, but, yet, as, for, and after the second dash.
   • The dash works somewhat like parentheses or commas, but it is used where a stronger punctuation is needed. It can connect an independent clause with the 'interrupting' thought like so:
     
     • Independent clause—thought—independent clause.
     • Independent clause—thought.
3. Put your sentences together: Now practice using a dash. Here are some examples of a dash being used correctly:
   
   • I'd better have passed my test—it's ninety percent of my class grade—or I'll have to go to summer school.
   • Well, I passed the test—granted, I cheated—but I passed!
   • Abby gave me a terrible haircut—and she expected a tip!
4. Know the other ways to use a dash: Dashes are also used to offset lists placed in the middle of an independent clause, where commas are already used, for example:
   
   • All of my school work—physics, Academic Decathlon, sociology, and calculus—got washed away when my house was flooded.

   Note: If there is only one appositive (which renames a noun), then you should set that off with commas, not dashes, for example:

   • The best waiter, Alain, can speak three languages.


5. In dialogue, dashes are used to indicate interrupted speech.
   
   
   • "But I—But you said— ... wait, what?" stammered Edna.


6. Dashes can also be used to emphasize a sentence.
   
   
   • Of course, I'll sign a prenuptial agreement—as long as it's in my favor.


7. Type the dashes in correctly.
   
   
   • wikiHow or wikiPedia: Use — to express an em dash. The & symbol (ampersand) lets the system know that a code may be coming up. The ; (semicolon) ends the code. Similarly, use – for an en dash.
   • When using a word processor, such as Microsoft Word, type two hyphens in between the words you wish to separate, leaving no spaces in between the words and the hyphens. The processor will automatically change the two hyphens into an em dash.