Translation studies - that is translation and Interpretation, is a field that evolved as a sub-discipline of Linguistics and its related subjects. In the course of time, it developed as a separate area of study with roots still attached to its origins. Hence, the training of translator and the interpreter cannot be totally separated from linguistics. The view presented in this paper is that linguistic-based courses in Translation and Interpretation departments contribute to the grounding and achievement of the students in translation and interpreting classes in upper-grade levels. To this end, two universities - Atılım University and Bilkent University - have been selected as sources for this study, conducting two surveys among the students studying there. The findings based on the statistical analysis represent the usefulness of linguistic-based courses and their contribution to translation and interpretation studies.