网上课件是网上教育的主要物质基础，它能充分表达教学信息应有的结构性、语义性特点。
Online courseware is the main physical basis of tele-education, it should well express the structure and semantic characteristics of education information.
介绍英语复合形容词的两种书面表达形式，列举其9种结构并举例分析其语义和特点。
Introduces two forms of written expression of English compound adjectives, lists their 9 structures, analyses with examples their respective meanings and peculiarities.
本文在对指示的一个小类社交指示分析界定的基础上，对社交指示的基本特点、语用本质、语言表达形式及语义表现进行了探讨。
The research on the characteristics, ways of expression, meaning and pragmatics will be useful to know the essence of social deixis more deeply.
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