Okay kiddo, have you ever seen two little lines above a letter like this: `ȁ`? That's called a double grave accent. It might look like a smushy nose or like the letter is wearing a hat!
When we use a double grave accent, it changes the way we say the letter. It can make the sound longer or it can change the sound completely. It's like when you put on a funny voice to sound like a movie character, but for letters!
Sometimes we use double grave accents in words from other languages, like French or Latvian, to make sure we say them right. It's like saying "Bonjour" instead of "Bone-jurr!"
So, a double grave accent might look funny, but it helps us say words correctly!