Samantha Callahan

Columns

Foundations

Verb & Preposition Usage (US)

"I've gotten so much better" gets a shrug — here's what's really going on with tricky verbs

Samantha Callahan 9 min read
Parts of Speech

Noun Plurals (US)

Thank you for all the feedbacks — your cursor hangs, and here's why that -s never belongs

Samantha Callahan 7 min read
Parts of Speech

Noun Plurals (US)

"Mouse" should become "mouses," right? Wrong — learn the plural rules that actually work

Samantha Callahan 7 min read
Parts of Speech

Showing Possession & Apostrophes (US)

Last weeks report, hovering over that missing apostrophe — singular, plural, and every owner in between, settled

Samantha Callahan 9 min read
Parts of Speech

Showing Possession & Apostrophes (US)

"My friends house is huge" comes back with an apostrophe added — learn where it goes

Samantha Callahan 9 min read
Parts of Speech

Prepositions of Time, Place & Movement (US)

"On Tuesday" or "in Tuesday"? The tiny prepositions that trip up even fluent writers

Samantha Callahan 8 min read
Parts of Speech

Prepositions of Time, Place & Movement (US)

Texting weekend plans and unsure about in, on, or at — nail every preposition

Samantha Callahan 7 min read
The Verb System

The Present Perfect (US)

You typed "I sent the file" and hesitated — when American English wants present perfect instead

Samantha Callahan 9 min read
The Verb System

The Present Perfect (US)

You text "I scored!" then a worksheet asks for the tense — learn to nail it

Samantha Callahan 9 min read
The Ambiguity Files

Squad Helps Dog Bite Victim

Okay, so a headline walks into your feed and, for one beautiful second, a squad of first responders is helping a dog

Samantha Callahan 1 min read
Punctuation

Quotation Marks (US English)

Mid-sentence in a Slack message, you freeze — does the full stop go inside the quote marks

Samantha Callahan 12 min read
Caught My Eye

Apple's £1

A greengrocer's sign, seen in a window: Apple's £1. One apple. One pound. And one apostrophe doing a

Samantha Callahan 1 min read