Exclamation Mark

Use an exclamation mark (!) after all exclamatory sentences—those which express authority, surprise, or emotion. Do not add a space at the end of a sentence, prior to the exclamation mark.
• You are fired!
• I thought I’d have a heart attack when that door slammed!
• I can’t believe Alex did that to me!
• Don’t go there ! (incorrect—no space before the exclamation mark)
Use an exclamation mark after an interjection or a word used as an interjection. At times, the sentence following the interjection may be exclamatory.
• Take that!
• Give me that paper. Now!
• Shut up! I’m doing the best I can!
Use an exclamation mark after statements which are commands or which imply need for immediate action.
• Pick up your toys!
• Hurry up or you’ll be left behind!
Use an exclamation mark after an interrogative sentence that is exclamatory in form or intended to be exclamatory.
• How could she do that!
• Who do you think you are!
Use an exclamation mark to add emphasis.
• Get your contact lenses here!
• This free offer expires soon!