The student uses a specific language which is the general language with additional spices inherent to a professional language (unknown terms, new meanings of familiar words, some grammar structures peculiar to the language of science or technology, etc.). General English should not be opposed to ESP or vice versa. ESP always rests on the knowledge of general English. The latter is more devoted to learning grammar structures and general vocabulary. The first one aims at consolidating grammar, pronunciation and other skills and at acquisition of a specialized meaning of words in specific professional contexts.