A common mistake made by many international students studying English as a second language is not paying adequate attention to English pronunciation. This underestimation of the importance of pronunciation is mainly because students tend to think mistakenly that pronunciation is less important compared to other aspects of the English language such as grammar, lexicology and vocabulary.
Pronunciation is vital to proper communication because the incorrect use of pronunciation inevitably leads to the message being misunderstood by the recipient. Pronunciation of the letter sounds in words as well as syllable emphasis on parts of words will more often than not change the words meaning and context drastically thereby irreversibly altering the meaning of the sentence being communicated.