网络词语的发展不仅体现出了新时期的社会文化特征，而且体现出了汉语的时代性色彩。“柠檬精”一词频繁见于网络，用以描述有羡慕、嫉妒心理的一类人。对于汉语学习者来说，学习网络新词新语是他们了解中国汉语、中华文化，提升汉语交际能力的重要途径。本文从网络词语“柠檬精”入手，描写这一新词的发展历程，从语义、语法功能、语用及生成流行原因角度对“柠檬精”进行分析，并提出柠檬精一词在对外汉语课堂教学中的建议。

The development of online words not only reflects the social and cultural characteristics of the new era, but also reflects the epochal color of the Chinese language. The term "Ningmengjing" is frequently used on the Internet to describe a group of people with envy and jealousy. For Chinese learners, learning new words and phrases on the Internet is an important way for them to understand Chinese language and Culture, and to improve their Communication Skills in Chinese. Starting from the network word "Ningmengjing", this article describes the development process of this new word, analyzes "Ningmengjing" from the perspective of semantics, grammatical function, pragmatics and the reasons for generating popularity, and puts suggestions for the word in the classroom teaching of Chinese as a foreign language.