The idea of Recursive-Descent Parsing Viewing the grammar rule for a non-terminal A as a definition for a procedure to recognize an A The right-hand side of the grammar for A specifies the structure of the code for this procedure The Expression Grammar:

Activities 1. Global Reading Task • Scanning: reading for specific information • Answer the questions on page 9 to get the main idea of the text. • Text structure analysis

◼ 高聚物分子间的相互作用 ◼ 晶态高聚物的结构特征 ◼ 高聚物的结晶过程 ◼ 高聚物的结晶热力学 ◼ 高聚物的取向态结构 ◼ 多组分高聚物的织态结构

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4.1 卤代烃的分类 结构和命名 Classification, Structure, and Nomenclature of Alkyl Halides 4.2 卤代烃的物理性质 Physical Properties of Alkyl Halides 4.3 卤代烃的化学性质 Chemical properties of Alkyl Halides

Alcohols are compounds whose molecules have a hydroxyl group attached to a saturated carbon atom

1. The experimental conditions — temperature and acid concentration — that are required to being about dehydration are closely related to the structure of the individual alcohol. The relative ease with which alcohols undergo dehydration is in the following order:

一.烷烃的结构和命名：(Structure and Nomenclature) 二.构象 ( Conformation): 三. Physical Properties

一、结构,同分异构和命名: 1. Structure:-C=c-sp分子是线性的,无几何异构

一、分子荧光与磷光产生过程 luminescence process of molecular fluorescence phosphorescence 二、激发光谱与荧光光谱 excitation spectrum and fluore￾scence spectrum 三、荧光的产生与分子结构关 系 relation between fluorescence and molecular structure 四、影响荧光强度的因素 factor influenced fluorescence