中文摘要：

从句法组配上看，“来”字概数结构有多种的表现形式，但在实际运用中，只有三种格式具有较高的使用频率。在语义表达上，助词“来”的表义极其丰富，可以呈现“略多”“略少”以及“左右”三种状态，但在现实话语理解中，又体现出“指多”的理解倾向性。

英文摘要：

From the perspective of the syntactic equipping , there are various forms of combinations about estimates structure ＂lai （来）＂.But in practical application , only three kinds of formats have higher use frequency .In terms of semantic expression , its mean-ing is very rich , showing ＂a little more＂,＂slightly less＂, as well as ＂about＂.But in the real discourse understanding , they also re-flect the tendency of ＂pointing to a little more＂.