The word "送去" is formed by combining the verb "送" (sòng), meaning "to send", with the directional complement "去" (qù), meaning "to go". In this construction, "送" denotes the action of sending, while "去" specifies the direction of that action as moving away from the speaker or toward a distant location, resulting in a compound meaning "to send away" or "to deliver to a destination". This grammatical pairing creates a resultative verbal phrase where the complement indicates the outcome or direction of the main verb.