Juncture phonemes are very important sound structures in applied phonetics and phonology. Therefore, they must be taught properly to so that non-native students of English language can master the spoken form of the target language. In phonetics, they are the features in speech that enable a hearer to detect a beginning, word boundary, ups and downs, and end of utterances in relation to articulatory timing that refers to both the duration of and overlap among articulatory gestures during speech. The appropriate use of juncture is important for both the speakers and listeners for correct communication because juncture in phonetics phonetics juncture belongs to intonation which brings up appropriacy and intelligibility to the pronunciation and communication process. According to Roach (2009), since the position of juncture (or word boundary) can cause a perceptual difference, and therefore potential misunderstanding, it is usually recommended that learners of English should practice making and recognizing such differences.