【正确答案】正确答案：According to Saussure, language is a system of signs, each of which consists of two parts; signified(concept)and signifier(sound image), and the relationship between the two parts is arbitrary. To explain individual signs, one must try to find the value of a sign from its relations to others, or rather, its position in the system. The two principal types of relations are syntagmatic and paradigmatic.