Hu (1999) once used several graphics to represent different ways of thinking。 And these graphics basically represent different thinking modes of different languages。 For example, the table below is about the Chinese and English thinking modes。

Chinese English

From the graphics we can know when Chinese write a passage, they separate the thoughts but also roll back the thoughts。 The passage structure is like a demonstration of induction。 The author avoids the topic and prefers to use concessions, conditions and tends to place the important content in the back。 English, however, is on the opposite, which often throws the question at the beginning and solves the question step by step。 It is more like a demonstration of deduction。

2。3 Researches on the interdisciplinarity of English textbook for senior high school

Most researches claim that interdisciplinary knowledge supplement is the trend of modern education。 It meets the inevitable requirement of times development ( Yarke & Park，2012;  Florentina & Barbub, 2014; Zhuang, 2014; Luo, 2015; Lockwood, 2016; )。。文献综述

That is to say, people start to realize the necessity and significance of interdisciplinary knowledge supplement in recent years。 Because with the development of modern education, the integration of knowledge is becoming more and more important and the emergence of interdisciplinary knowledge supplement can solve the urgent need of today's education。 Then what are these benefits of supplying interdisciplinary knowledge in class? There are also many scholars made answer to this question。 Luo (2015) pointed out that interdisciplinary knowledge supplement can improve comprehension ability。 They even included this belief in the definition of interdisciplinary knowledge: combine two or more than two disciplines in order to form the comprehensive understanding of an issue or topic。 Snyder (2000) believes that interdisciplinary knowledge supplement increases student learning by engaging students and helping them to develop knowledge, insights, problem solving skills, self-confidence, self-efficacy, and a passion for learning which are common goals that educators bring to the classroom, and interdisciplinary instruction and exploration promotes realization of these objectives。 Repko (2008) asserts that the supplement of interdisciplinary knowledge fosters advances in cognitive ability and other educational researchers (Swift, 1980；Florentina & Barbub, 2015; Snyder, 2000) have identified a number of distinct educational benefits of supplying interdisciplinary knowledge in class including gains in the ability to recognize bias; think critically; tolerate ambiguity; acknowledge and appreciate ethical concerns。

2。4 Conclusion

From the literature, we know that topics of the improvement of comprehension ability through interdisciplinary knowledge supplement and the necessity of interdisciplinary knowledge supplement are both discussed theoretically and neither of them have been proved under experiment or analysis of the basic data like the textbook itself。 So no matter how reasonable these conclusions seem to be, from a scientific perspective, they are dubious。 A further research needs to be done。