Parts of Speech
Interjections
Interjections add voice in casual writing but usually belong outside academic prose.
Why this happens
Interjections (oh, wow, hey, alas) express emotion or reaction and rarely belong in formal exam essays — yet they slip in when writers mimic speech or try to sound conversational. Overuse weakens tone, and missing punctuation around interjections can make sentences confusing. Knowing when an interjection is appropriate separates informal notes from academic prose.
See it in a sentence
IncorrectWow the results were unexpected and significant.
CorrectWow, the results were unexpected and significant. — or drop Wow in formal writing.
Teaching note: Interjections at the start need a comma; in essays, removing them is often better.
IncorrectThe well alas was dry by noon.
CorrectThe well, alas, was dry by noon.
Teaching note: Alas interrupts the sentence — set it off with commas when you keep it.
IncorrectOh I see the problem now.
CorrectOh, I see the problem now.
Teaching note: A brief interjection before the main clause takes a comma.
More examples
Well, I disagree with that interpretation.
Well as a discourse marker is not the same as the adverb well — punctuate it as an interrupter.
Dear me, that was an oversight.
Multi-word interjections (dear me, oh no) function as a single emotional unit.
Yes the data confirm the trend.
Yes or no answering a question needs a comma: Yes, the data confirm the trend.
Hmm the author never cites a source.
Sounds informal in academic writing — replace with However or omit.
Quick check
Hey lets review the introduction before we submit.
Show the fix
Hey, let's review the introduction before we submit. Add a comma after Hey and use let's (let us), not lets.
Practice this topic in Wrytesmart
Open the grammar workspace to complete interactive exercises for interjections. You will spot errors, fill blanks, and transform sentences — always with teaching notes that explain the principle, not just the correction.
Master interjections in context
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