21世纪以来，当代汉语中兴起了一个新的构式——“是时候VP”，引发了学者们的持续关注和热烈讨论，并取得了丰富的成果，但这些都是共时研究，并未涉及历时探讨。基于此，本文以2006年为界，对该构式进行前后期之间的比较，分析其在最初用法基础上的发展变化。

本文共分为四章。第一章是绪论，说明了选题缘由、研究目的及意义、研究方法和语料来源，并对学界已有研究进行了梳理，解释了以2006年为前后期分界的依据。第二章分析了该构式的内部发展，主要是对VP类型及其发展变化的探讨。构式的VP部分主要由动词、动词性短语和复句性小句这三类充当，除数量的增加外，这三类又有各自的发展。第三章从句法结构和句法功能两个方面分析“是时候VP”的外部发展，前者着眼于前加成分和后附成分的发展，后者主要分析句法功能的演进，即在句中承担什么样的角色。第四章先从语言接触、构式优势和语言用户的心理三方面探讨了该构式产生和发展的原因，然后总结出了在发展中呈现出的三大特点，分别为由限定型向非限定型发展、从正文到标题发展和从低规范度媒体到高规范度媒体发展。

Since the 21st century, “是时候VP” as a new construction has emerged in contemporary Chinese, which has aroused the continuous attention and heated discussion of scholars, and has made rich achievements. However, these are all synchronic studies, which do not involve diachronic discussion. Based on this, this paper takes 2006 as the delimit to compare the former and later phases of this construction, and analyzes the evolution of its original usage.

This paper is divided into four chapters. The first chapter is the introduction, which explains the reason for the topic selection, the purpose and significance of the research, the research methods and the source of the corpus. It also sorts out the existing researches in the academic field, and explains the basis of using 2006 as the boundary between the former and the latter period.

The second chapter analyzes the internal development of the construction, mainly discusses the type of VP and its change. The VP component of the construction is mainly composed of verb, verbal phrase and complex sentence form. Apart from the increase in number, these three categories have their own development.

The third chapter analyzes the external development of the construction from two aspects of syntactic structure and syntactic function. The former focuses on the development of the preaddition and postaddition, while the latter mainly analyzes the evolution of the syntactic function of the construction——what role it plays in the sentence.

The fourth chapter firstly discusses the reasons for the emergence and development of this construct from the aspects of language contact, construction advantages and language users' psychology, and then summarizes the three characteristics presented in the development, namely the development from limited type to non-limited type, from text to title development and from low standard media to high standard media development.