What are the main Pronunciation problems in English from different languages?

Some common pronunciation problems in English for speakers of different languages include difficulties with English vowel sounds, stress patterns, and consonant clusters. For example, speakers of Spanish may struggle with differentiating between the "i" and "ee" sounds, while speakers of Japanese may find it challenging to accurately produce English r and l sounds. Pronunciation can also be influenced by the rhythm and intonation patterns of a speaker's native language.