Basic Rule: When it comes to apostrophes, a good rule to follow is that an apostrophe adds a second word. This isn’t always true, but you’ll be right more often than you’re wrong.
For example, let’s vs. lets:
let’s = let us
lets = allows
Since context always helps me learn…
Let’s [let us] go to the beach.
She lets us swim without a lifeguard.
Some other examples:
it’s = it is/it was
that’s = that is/that was
there’s = there is/there was
Basically . . . apostrophes are not the way to make a word a plural.
Any Exceptions? When making nouns (people, places, or things) possessive, the apostrophe s doesn’t create a second word.
Jane’s dance bag.
The company’s contract.
I’ll talk more about possessives in a future post.
I love to learn; let me know what I’m forgetting!
Have a question about grammar? Email me at Jansina@rivershorebooks.com to learn the answer – and have your question featured in an upcoming post! I’m here to help and encourage in any way I can.