单句,就其结构而言,可以分为一般单句和复杂单句两种。谈到复杂单句,人们自然联想到“兼语式”、“连动式”,以及“主谓词组作主语、作谓语、作宾语”,“动宾词组作主语、作宾语”。《中学教学语法系统提要(试用)》(以下简称《提要》)所列举的也是这么几种。其实,复杂单句其复杂的表现形式并非仅仅上述几种,而且有些复杂的表现形式常常用到,而《提要》以及一些权威的语法专著似未涉及,有感于此,本文试以中学语文教材中出现的一些句子为例,谈谈除上述复杂单句之外的一些特殊的表现形式。一、介词结构可以作主语。①黎明,当牧民们走出蒙古包,就是它们分群的一刻。(碧野《天山景物记》) ②由远到近,是银白、淡蓝、深青、墨绿。(碧野《天山景物记》) ③从居庸关到呼和浩特大约有一千多公里的路程。(翦伯赞《内蒙访古》) 二、介词结构可以作宾语。①她的姓名第一次为我所见,是在去年夏初杨 A single sentence, in terms of its structure, can be divided into two types, a general single sentence and a complex single sentence. When it comes to complex single sentences, people naturally think of “particularly” and “linked”, as well as “a subject-predicate phrase as a subject, a predicate, and an object”, and “a verb as a subject speaks as an object”. The same is true of the “High School Teaching Grammar System (Trial)” (hereinafter referred to as “Summary”). In fact, the complicated form of a single sentence is not only the above-mentioned several types, but also some complex forms of expression are often used, and the “Summary” and some authoritative grammar monographs do not seem to involve, have a sense of this, this article tries to use Chinese teaching materials Examples of some of the sentences appearing in the text are about special expressions other than the complex ones mentioned above. First, the preposition structure can be used as the subject. 1 Dawn, when the herdsmen walk out of the yurts, they are the moment of grouping. (Pingye “City of Heaven”) 2 from far to near, is silver, light blue, dark green, dark green. (Pingye “Days of the Mountain”) 3 From Juyongguan to Hohhot, about a thousand kilometers away. (Zhai Bozan “Internal Mongolia visit”) Second, preposition structure can be used as object. 1 Her name was first seen for me. It was in the early summer last year.