英语中评述性从句的分类、语义及其句中位置的研究
A Study on Classification, Semantic Implications and Sentence Positions of Comment Clauses in English

在英语中，评述性从句虽然出现频次较少，但其句法形式和表达的语义内涵却极其多样。本文基于现代英语语法理论，把评述性状语从句分为无连词型和有连词型两种类型，并总结出二者的语义差别在于不同的话语确定性程度。本文最后探索了评述性状语从句在句中的位置，及其对应的语义内涵和说话者的情感态度。
The comment clause in English, notwithstanding its relatively few occurrences, manifests itself in both its varied semantic implications and positions in sentences. This paper, based on the modern English grammar theories, first divides comment clauses into with- and without-subordinator types; and subsequently concludes that the main difference between the two types lies in expressing different levels of discourse. Finally, it explores the positions of comment clause in sentences, and its corresponding semantic connotation in relation to the speaker’s emotional attitude.