Okay kiddo, let me tell you about something called Indo-European sound laws. It’s like a magic code that tells us how the sounds of words in different languages that came from one parent language, called the Indo-European language, change over time.
Think of it like you have a toy car, and you want to make a bigger one. But you can't just make it bigger all at once, you need to make it a little bigger bit by bit. The same thing happens with words. Over time, the sounds of words change a little bit at a time.
So let's say we have the word "father" in the original Indo-European language. As time goes by, the "th" sound changes into an "f" sound in some languages, like Greek and English, so the word becomes "pater" or "father." But in other languages, like Sanskrit and Persian, the "th" sound changes into a "d" sound, so the word becomes "pita" or "padar."
The Indo-European sound laws help us understand how and why these changes happen. They tell us that certain sounds in one language will always change into certain other sounds in another language over time.
It's like a secret code that helps us figure out that "pater" and "pita" come from the same word in the original Indo-European language, even though they look and sound different now.
So you see, Indo-European sound laws are like a magic code that helps us understand how languages change over time. Pretty cool, right?