When we write, we use a lot of words and sometimes want to show that something belongs to someone else or that something is missing some letters. This is where the modifier letter apostrophe comes in!
The modifier letter apostrophe is a tiny little symbol that looks like a comma, but it's up high, like it's floating above the line. When we add the modifier letter apostrophe to a word, it changes the meaning of the word a little bit.
If we want to show that something belongs to someone else, we can use the modifier letter apostrophe like this: "John's toy." The apostrophe after the "n" in "John" shows that the toy belongs to John. It's like John owns the toy and the apostrophe is a little flag that shows that.
But sometimes when we write fast, we might forget some letters in a word. We can use the modifier letter apostrophe to show that a letter is missing. For example, instead of writing "cannot," we can write "can't." The apostrophe is like a shortcut that shows that the "no" is missing.
So, in summary, the modifier letter apostrophe is a tiny symbol that helps us show possession or missing letters in a word. It's a helpful tool for writing and communicating with others!