Rules of Interjections:

• When interjection is used in the beginning of a sentence, a comma should follow it.
• When an interjection forms a sentence by itself, a full stop, a question mark or an exclamation mark can follow the interjection.

List of some common examples of interjections:

• Hey!
• HI!
• Oh!
• Ouch!
• Ugh!
• Whoops!
• Wow!
• Yuck!
• Phew!
• Uh-Oh!