| Complex sentence is the language phenomenon that needs to study seriously. In the field of syntactic studies, the study of complex sentence is the most complicated. It has different opinions in academic field, such as from the definition of complex sentences to the availability of complex sentences, and which sentence structure can be referred to complex sentences. Response to the above, in the basis of previous studies, this paper mainly makes the further exploration about the form of complex sentence and its structure and puts forward own views.The structure and content of the paper are as follows:In introduction, it briefly describes the origins and significance of topics, the study of complex sentences' condition, and the methods of study.In the first chapter, it discusses the introduction of complex sentences, the purposes of complex sentences, basic principles, as well as the study of complex sentences' main criteria. When it comes to the form of complex sentence structure, it must be based on the issue of formal structure to find out the main criteria. The definition of complex sentences, the distinction of its grammar, and the obvious characteristic of other units can be differed from the formal structure.In second chapter, it is the main part of the paper. It focuses on the study of the complex sentences' system, as well as on different structural members of the complex sentence, and it is parallel with the modification of the form of complex sentence structure and the main form of symbols.In third Chapter, it discusses the evolution of complex sentences, that is, the omitted words, the added components , a cross of the single sentence and the complex sentences , as well as the some structures of the complex sentence, such as omitted the words served as a subject in complex sentence, and omitted the predicate verb of the complex sentence, the sentence form of element in small sentence, the overlap instructions components of the sentence, the direct speech components in the sentence, mixed-complex sentences and so on.In conclusion, it summed up the main contents of the text, put forward own opinions and lists out the reference. |