Abstract:
This research is an attempt to investigate punctuation mark problems made by students in their writing performance. Students of second year in the Sudan university of science and technology the samples randomly were (30) students were chosen randomly of (60) who were enrolled in the Department of English. One instrument was used for data collection which was test for the students. The data were analyzed using the SPSS program. Some of the most important result which the study came up with is that the students do not know the which wring of use some punctuation marks such as the colon, question mark and full stop. The study also offered some recommendations the most important of which is teachers should give more emphasis to the teaching Moreover the study effort some suggestions for further research.
