【正确答案】正确答案：It refers to that words of different sets or classes may permit, or require, the occurrence of a word of another set or class to form a sentence or a particular part of a sentence. For instance, what can precede a noun(dog)is usually the determiners and adjectives, and what can follow it when it takes the position of subject will be predicators such as bark, bite, run, etc.

【答案解析】解析：(考查共现关系)