公文标题由发文机关、事由及文种三部分构成(“会议纪要”例外).其中的事由是由介词“关于”及概括公文内容的词语(词或词组,下同)构成的介词结构表示.文种是中心词,发文机关和事由都是文种的限制语.整个标题是一个名词性的偏正词组,而不是句子.这是因为:(1)公文标题是公文这一事物的名称.表事物名称的只能是名词或名词性词组,而不能是句子.(2)应该提起注意的是,公文标题中的发文 The title of the official document consists of three parts (the minutes of the meeting, except the minutes of the meeting), which is composed of the prepositions “about” and the words (phrases or phrases, the same below) summarized in the official document. The language is the central word, the issuing authority and the reasons are the kinds of language restrictions. The entire title is a nominal orthophonic phrase, not the sentence. This is because: (1) the official document title is the name of the thing. The name of the table can only be a noun or a noun phrase, not a sentence. (2) It should be noted that the official document