The "B" and "V" sounds are one of the most difficult to pronounce for non-native English speakers.
Especially for Japanese people, to distinguish V from B can take a lot of continuous practice.
With repetition and regular practice, tongue twisters are highly effective to perfect the pronunciation of such sounds in the English language.
I hope you enjoy this video and continue to learn from our posts on Lifelong English!
For more extensive practice, our one-on-one lessons are very much recommended, so feel free to let us know any time! :)