InterjectionsAn interjection is a word used to express strong emotion. It functions independently within a sentence.
In Latin, the word interjection means "something thrown in." In a sense, interjections are "thrown in" to add strong feeling. Interjections should be used sparingly in your writing. Since they are independent from the rest of the sentence, they can be set off by commas or punctuated as independent clauses.
Ouch, Bah, Shh, Oh, Wow, Nonsense
Well, Darn, Ah, Bravo, Hey, Alas
Darn! That cat got out again.
Oh! I didn't expect you to arrive this early.
Hey! Do you know what you're doing?
There are a number of other words that are used alone in a sentence. These include please, thank you, yes, no, hello, and good-bye. They are punctuated like interjections.
1)"Hey! What a good idea!"
2)Ouch, that hurts!
3)Oh no, I forgot that the exam was today.
4)Hey! Put that down!
5)Wow! I won the lottery!
6)"Oh, please say 'yes'!"