Maybe for many people, opening their mouths to speak English can feel very uncomfortable. Until you can learn to let go and use your lips, tongue and teeth to make sounds clearly (even if that means showing a little bit of tongue or teeth), it will be very difficult to make English sounds correctly. But how and why ?

Actually , the answer is quite simple :  mouth position. Mouth position means whether your mouth is open or closed most of the time when you speak (whether your jaws, upper and lower teeth, are close together or wide apart).

Many people automatically use the mouth position typical to their first language when speaking English and it makes their speech harder to understand. The reason we’re bringing this up is that once you know what affects your pronunciation, you can work on it, and thus improve your Speaking skills.