English Alphabet: Letter ABC

This app is an professional tool for learning and training of English letters, and can effectively correct pronouncing and writing of letters.
The app has the following features:
1. Use the articulator animation to show the process and techniques of pronunciation of each letter.
2. Use the animation to show the writing order of each letter, including the general writing and curlicue writing.
3. Select over 300 high-frequency common words to aid learning letters, and provide high-quality female and male sounds.
4. Provide several effective training: letter case conversion, alphabetically training, pronouncing training and listening training.
5. Provide exclusive physical voiceprint analysis of your sounds and standard pronunciation to help understand the essence of pronunciation.
6. Provide a powerful audio player that can adjust the rate of speed, arbitrary switching, single loop, list loop, and so on.