-Hello, everybody.
How are you?
Today, we are going to cook
our own burgers.
¿Do you like them?
Hey, Mermaid,
I'm going to cook you the best burger ever,
because I'm going to put in my secret ingredient.
Do you know what it is?
-Prefixes.
Are you joking?
How can a prefix help to cook a burger.
And also, what is a prefix?
-I'm glad you ask.
Let me explain.
-Oh, wait, Katharine.
Can you explain prefixes
while you cook me a burger?
-Sure!
When we cook a burger we leave the meat on the grill
for more or less time,
depending on how we want our burger to taste, right?
-Right!
-And with the help of prefixes
before de word "cook",
I can create new words to adjust the cooking
to every taste.
Do you want to see?
-Sure!
-OK! Well, let's go!
This burger us over-cooked.
Too much time on the grill.
It's burnt.
And this burger is semi-cooked.
Half of it fell off the grill.
This burger is under-cooked.
It's too raw for me.
And this burger is un-cooked.
This burger is pre-cooked.
And this burger is re-cooked.
Can you see?
With just one word and different prefixes
we can create different words
to show a variety of ways to cook a burger.
-Tasty!
-Yes, tasty and useful,
because there are a lot of prefixes
we can put before words
to create different words.
Let me show you.
(Música)
For example,
we can use prefixes in front of words
to create the opposite of that word.
-It's "im", "impossible"!
-Impossible.
-"Invalid".
-Exactly.
-I want to try one now.
That's right, "dislike"!
I'm so happy
to learn about prefixes.
-Good!
-Unhappy!
-Very good, Mermaid.
Exactly.
Why don't you try using prefixes?
-Or you can try cooking burgers!
-Great idea, Mermaid.
See you soon, bye!