If you are an English language learner, there are different pronunciation mistakes that you will make to those made by a native speaker. The reason for pronunciation mistakes that are made by non-native English speakers is two-fold:
1. There are sounds in English that may be entirely missing in your native language
2. We tend to mimic the pronunciation of those around us, and even native English speakers are guilty of mispronunciations, which then become the accepted way of sounding out the
common pronunciation mistakes
bob wire barbed wire
excetera et cetera
probly, prolly probably
If you are an English language learner, there are different pronunciation mistakes that you will make to those made by a native speaker and the reason for these pronunciation mistakes are varied.