1.引言词汇的习得在整个二语学习过程中处于核心地位,它的重要性不言而喻,近些年来,对二语词汇习得的研究呈现出范围扩大化和研究精细化的状态,尤其是对词汇知识深度的研究。词汇习得从表面上看似乎具有一定的偶然性,然而究其深层,从语言结 1. Introduction Vocabulary acquisition in the entire process of second language learning is at the core, its importance is self-evident, in recent years, the study of second language vocabulary acquisition showed a wide range of research and refinement of the state , Especially the depth of knowledge of vocabulary research. Vocabulary acquisition seems to have some contingency on the surface, however, deep research, from language knot