LR分析器的核心是一张分析表，它由两个子表组成: 其一是分析动作表;另一个为状态转移表。其中: S1,S2,…,Sn为分析器的各个状态;a1,a2,…,al为文法的全部终结符号和句子界符;X1,X2,…,Xp为文法字汇表中的全部文法符号。(I like doing sports and reading in my free time. My favorite sport is basketball. I often play basketball with my classmates after school and play with my friends on weekends. I like playing basketball because it can make me strong and health. When I play basketball, I forget all my worries and I can make lots of friends who have the same interest.)