A person’s first language affects the way they sound when they speak English. If you are an Indian or Chinese by origin, you will most likely sound different when speaking English from a person whose first language is Arabic. Have you ever thought about why this happens?
It is because of 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).
When people speak English, they unknowingly use the mouth position that is typical to their first language. This makes their speech hard to understand by a native English speaker. Now that you know what affects your pronunciation, you can work on it.
Wise accent trainers suggest that languages should be learned by eye. We have, therefore, compiled a short exercise to help you understand the correct mouth positions.