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Series:Grammar
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Em dash vs en dash: which one, and when (a writer's rule)
The em dash marks a pause, the en dash marks a range, and the hyphen joins one compound word. Here is how to tell them apart and check your manuscript.
When to Use a Semicolon (and When Not To): Rules and Examples (2026)
A semicolon joins two complete sentences that belong together. The rule, the four tests, and the mistakes that most often go with it.
Lay vs Lie: The Rule, the Tense Table and the Traps (2026)
Lay takes an object; lie does not. The rule, the full tense table, the trap in the past tense, and a one-pass check for your draft.
The 30 most common grammar mistakes (and how to fix each)
Most manuscript errors come from a handful of habits. Here are the 30 most common grammar mistakes, grouped in five families, with a fix for each.
Compliment vs complement: how to keep them straight
A compliment is praise; a complement completes or matches something. Here is the quick test, plus complimentary vs complementary.
Who vs Whom: When to Use Each (2026)
Who does the action; whom receives it. Use the simple him/her test, avoid over-correcting, and know when plain who is fine.
Then vs Than: How to Use Each Correctly (2026)
Then is about time or sequence; than is about comparison. Here is the one-question test, the classic slips and a quick self-check before you publish.
Its vs It's: The Rule, the Reason, and a One-Pass Check (2026)
It's means it is or it has. Its means belonging to it. The rule, the reason, and a one-pass check for your manuscript.
Affect vs Effect: How to Use Each Correctly (2026)
Affect is usually a verb and effect is usually a noun. A one-line test, the two rare swaps, and examples for writers.