Jennifer Tarle is among my favorite pronunciation teachers. That’s why I’ve been following her activities, keeping contact her since . Some weeks ago, she held an online free class about top 10 consonant and a little later about to 10 vowel mistakes. However, consonants can also be tricky and hard to learn, the American vowels are even greater challenge. That’s why I’m going to write about her lesson on vowels. It won’t be only a summary, but I’m also going to give my views and thoughts to some parts of Jennifer lesson.