This article explores the concept of assimilation in the context of language acquisition, particularly focusing on its relevance to the teaching of speaking and listening skills in English. Assimilation refers to the phonological process where sounds in speech adjust to neighboring sounds, resulting in smoother, faster, and more efficient communication. The article examines how this phenomenon occurs in naturally spoken English and its implications for non-native speakers. It discusses practical strategies for instructors to integrate assimilation into speaking and listening instruction, helping learners improve their pronunciation, fluency, and comprehension.