本书从共时和历时两个层面出发，对近代汉语中因果连词的范围与消长、形成、隐现和提顿、语义偏向和近代汉语因果句的句式、主语位置和话题、句序、主观性、两域、叙述视角以及近代汉语原因句的修饰成分、近代汉语说明因果句和推断因果句的区别等十二个专题进行了深入研究，得出了一系列较为可靠的结论。本书可以提供一些与以往不同的方法和思路，进而引起人们的关注和思考，以促进对因果句及相关问题更进一步的探索。

Starting from the two levels of synchronic and diachronic time, this book conducts in-depth research on twelve topics, including the scope and ebbishment, formation, implicit appearance and teton of causal conjunctions in modern Chinese, semantic bias and sentence structure of causal sentences in modern Chinese, subject position and topic, sentence order, subjectivity, two domains, narrative perspective, and the modification components of cause sentences in modern Chinese, and the difference between explanatory causal sentences and inferred causal sentences in modern Chinese, and draws a series of reliable conclusions. This book can provide some different methods and ideas from the past, which in turn arouses people's attention and thinking, and promotes further exploration of causal sentences and related issues.（AI翻译）