This document discusses pronunciation problems when learning English as a foreign language. It defines pronunciation as the production of speech sounds including articulation, stress, and intonation. Common pronunciation problems are stressing words incorrectly, pronouncing consonants incorrectly, and mixing up vowel sounds. Five specific pronunciation problems are identified: 1) stressing individual words incorrectly, 2) stressing the wrong words in a sentence, 3) pronouncing certain consonant sounds incorrectly, 4) mixing up short and long vowel sounds, and 5) forgetting to finish words. The document also provides tips for improving English pronunciation through practice listening, speaking, using a dictionary, watching movies with subtitles, and chatting with friends.