Interjections as words that “express pain, surprise, anger, pleasure, or some other emotion or sentiment.”
Grammatical Form
Grammatical Form of English Interjections explains the internal structure of interjections in English.
Grammatical Function
Grammatical Function of English Interjections explains the one grammatical function of interjections in English grammar.
Using Interjections as Interjectors exemplifies interjections performing the grammatical function of interjector.