

64: The 7 Grammar Mistakes You Should Never Make
This week I’m sharing my 7 deadly sins of grammar. These are some of the mistakes you might be unknowingly making in your writing that’s causing you to lose credibility - especially online.
The goal of this episode is to give you more confidence in your writing. It is, after all, one of your most valuable currencies for intelligence. Proper grammar makes for good business, helps you command respect, and creates clarity in your message.
The definition of grammar is the study of the way words are used to make sentences. This can be tricky because the grammar we use when we speak can be much different than the grammar we use when writing, but it’s always worth the effort.
By the end of this episode, you’re going to be clear on the basics, and feel confident that you won’t fall into these very common grammar mistakes.
- [4:38] Who that?
Find out once and for all when to use the word who and when to use the word that.
- [5:46] Dangling modifiers.
It’s best to keep them out of your writing. This mistake happens when a descriptive phrase doesn’t apply to the noun that immediately follows it. Huh? Don’t worry, I explain exactly what that means here.
- [6:41] Me vs. I.
Most people think they’ve got this one down until they need to use it in a sentence. It’s also extra confusing because it can sound right when it’s actually grammatically incorrect. Find out what my little trick is to get this one right.
- [7:49] i.e. vs e.g.
Confession: I pretty much always have to Google this rule before I use it. We might think they mean the same, but they actually don’t. I have a little hack for this one too.
- [8:53] Do you say “care less” or “couldn’t care less?”
When you break it down, one actually makes sense and one doesn’t. Find out if you’re using it correctly.
- [9:33] Using two prepositions back to back.
This one doesn't come up a lot in grammar guides, but I see it a lot in writing. Using prepositions correctly actually makes your writing clearer and quicker, so it’s definitely worth taking the time to learn.
- [10:15] Quotation mark placement.
This is not one of those quick mistakes, like typing too instead of to, so it’s extra annoying. And yes, I'm judgy about it. C
Want More Behind the Breakdown?
Follow The PR Breakdown with Molly McPherson on Substack for early access to podcast episodes, exclusive member chats, weekly lives, and monthly workshops that go deeper than the mic. It's the insider’s hub for communicators who want strategy with spine—and a little side-eye where it counts.
Follow Molly → @MollyMcPherson
Subscribe to PR Breakdown on Substack → prbreakdown.media
Click here to subscribe to Molly's live events.
Need a Keynote Speaker? Drawing from real-world PR battles, Molly delivers the same engaging stories and hard-won crisis insights from the podcast to your live audience. Click here to book Molly for your next meeting.
This podcast is supported by Muck Rack, the PR management platform I use to monitor media coverage, track journalist activity, and inform high-stakes strategy with real-time data. Click here to try Muck Rack for yourself.
Follow & Connect with Molly: