前言主要界定知青题材小说这一基本概念，阐释时限选取的理由，并对八十年代知青文学研究进行简要概括。
The introduction defines this conception of " educated youth 's subject novel " mainly , explain the reason chosen in time limit , and summarize briefly the state that educated youth 's literature was studied of the 1980s .
知青题材