Abstract:
This study aimed at investigating the problems, which was encountered by Sudanese learners of formal English when slang forms are used by Englih Native - Speakers. The descriptive analytical method was used. A diagonstic test was used as a tool for the data collection; the study diagnostic test was answered by (30) participants of undergraduate students. Data was analyzed statistically by (SPSS) programme. The study came up with the following results: Universities fail to provide students with sufficient courses in informal English. Based on the above mentioned results, the study recommended: Ministry of High Education should offer every possibility to solve this problem by reviewing the syllabus in order to introduce students to the slang forms of English. In addition, some suggestions forwarded for future studies.