Abstract: "的" acts as an agent to indicate the property of a foreign adjective in foreign language-Chinese dictionaries."的" may safely be referred to as "的外".A detailed analysis between foreign adjectives and Chinese adjectives,and a cross analysis among adjectives of foreign languages reveal that "的外" outstands the original form,the root and the variants of Chinese adjectives,and the relations between each other."的外" only represents the original form,which can derive two variants:"……的" and "0的".This finding may sufficiently explain the absence of "的" in certain contact.