Interjections are used to show extreme emotion

• great surprise

• great pleasure

• great displeasure

If the INTERJECTION is not followed by a sentence

• then place an exclamation point after it:

  • Wow!

  • Ouch!

  • Drats!

  • Eureka!

  • Good Grief!

  • Alas!

  • Great Scott!

If the INTERJECTION is followed by a sentence

• then place a comma after it

• AND

• place an exclamation point at the sentence’s end:

  • Wow, did you see that!

  • Eureka, I have found the solution!

The interjection O is never followed by punctuation;

• however, Oh is always followed by punctuation.

  • O God in heaven!

  • Oh, I got an A on my test.