This book in your hand is about the impact of segmental and suprasegmental Phonemes in Learning Speaking in English as a Foreign Language. It also based widely on phonetics and phonology in which the difficulties of pronunciation of the segmental phonemes and supra-segmental features "stress, intonation, pitch and rhythm etc." is identified. It is also an essential guide for English learners to master their pronunciation and knowledge of English language. Inside the book, there is an argument about the interference of the first language sound system in the second language sound system and suggestions for solution.