1Analysis of the conjunction that is in the course of study to generateAbstract: The conjunction ‘that is’ the formation has gone through three stages: the ‘that + is the’ modifier-modified phrase, ‘that is’ a compound word, ‘that is’ concessions conjunctions it in the grammar in the history of the formation of a certain typical nature of this process for its syntax and its motives and mechanisms were studied. Keywords:: that is, the syntax of conjunctions I. Introduction In modern Chinese, ‘that is’ in two ways: First, to determine the table, the equivalent of ‘is is.’ For example: (1 ‘unless you turn a blind eye to reality, then you have to admit that there is reasonable .’(<< Changjiang Daily>> October 17, 1997 There is another use that as a concession conjunctions, the equivalent of ‘even, even, even if’, etc. used to represent the virtual concession, that is, first 2Granted a virtual situation, and then turn that the establishment of something from virtual situations impact often associated with ‘also’ used in conjunction, for example: (2 ‘At that time, that is, officials do not have such problems, a visit from the courtyard and out, it is not easy .’(<< Daily>> April 18, 1988 (3 if another situation, I am afraid it is another matter, for example, committed a wrong kind of gigantism that is re-burly, is vulnerable. (<> 1988 July In the above two examples, ‘that is ... also ...’ connection between two clauses that give form a complex sentence, but in modern Chinese, this usage is not common, it is often ‘even ... ... also ‘‘ Even if ... ... also ‘and replaced the main discussion here is,’ that is ‘the second usage, the concessions conjunctions in the ancient Chinese,’ that is ‘is a modifier-modified phrase This paper attempts to analyze the ancient Polarization in the Chinese phrase ‘that is’ how the relationship between virtual conjunctions into a concession, and its shallow production of virtual machines. 3This article from the Linguistics Research Center of Beijing University of Chinese ancient Chinese language corpus and the Institute of Central China Normal University, Mr. Xing Fuyi corpus planning full-text search system developed to collect some of the corpus, it is noted, the text is no longer stated. Second, ‘that is,’ meaning the classification Conjunction ‘that is’ through the formation of a complex stage, in order to better their study of grammar and analysis, following the ‘that is’ classified, can be divided into three categories: (A ‘that is’ - ‘or’ + ‘is’ modifier-modified phrase Early Eastern Han Dynasty, ‘that’ and ‘is’ the phenomenon appeared once, but rare, for example: (4 Chenzi five children of the day today, that is today’s diagram also. (Han <> Wei-Jin period and beyond, ‘or’ + ‘is’ the phenomenon of gradually increasing the use of combinations such as: (5 garden in Lingyun units, that is, those built by Wendi. (<> 4(6 Zuoxian Wang storage that is Chanyu vice. (Fan Ye <> (7 treasures of the king, that is, Wu Rong. (Jin Gan Bao ‘Spirits>> In these examples, ‘or’ + ‘is’ the direct component is composed of two non-prejudiced phrase, constitute a key to determine the sentence. The example of the ‘Yes’ to all the table judge, ‘that’ strengthen the positive tone, which means ‘on’. ‘or’ modification ‘is’, the two together constitute the modifier-modified the phrase ‘that is, 1.’ Here, ‘which’ and ‘is’ only modification of the relationship, not a word. (B ‘that is’ - ‘that is’ compound words Northern and Southern Dynasties early, ‘is’ followed by the beginning of many components with the predicate, the judge of the weakened, for example: (8 so, then the profit off the edge of survival, that is, death and God-shaped deposit. (Beam <> (9 husband ignorant of all science, all abandoned to 5know, and learn ignorant, ignorant that is knowledge, then self-unconsciously. (<> Cases (8, ‘God-shaped in the death and’ in the sentence as a predicate, according to ‘a core verb’ principle, the sentence ‘is’ to determine the significance of weakened dependent increase gradually empty into affixes, the two components ‘that is, 2.’ At this time, ‘that’ and ‘yes’ start to solidify the relationship by the two groups with non-direct component that is integrated into a synthetic modifier-modified word phrase, which is obviously of vocabulary and grammar of the product. (C ‘that is’ - give conjunctions Northern and Southern Dynasties period, with ‘that is 2’ wide range of applications, it began to appear in a sentence such as: (Line 10 that this person is not so difficult for men. (Southern Liang Hongjing <> But such examples are rare, ‘that is, 2’ although in the first sentence, with the convergence effect, but with the ‘3 that is’ different, it just means a slight 6concession, translated as ‘even.’ Patients (10, ‘that is’ modified predicate ‘could 。