The main findings of this paper are as follows: firstly, the different choices of English active voice and passive voice are rooted in the behavioral characteristics of English verbs, and a deep understanding of the semantic characteristics and connotations of English verbs plays an important role in the cognition of English active voice and passive voice; Secondly, when English active voice is converted into passive voice, it will cause some sentence components to move, which may also cause changes in sentence semantics; Thirdly, there are some parts of speech in English, such as determiners, quantifiers and pronouns, which may affect the choice of English active voice and passive voice; Finally, the choice and transformation of English voice involves not only the changes of syntactic structure and main information, but also pragmatics, semantics and human cognitive psychology.
In addition, the starting point of asymmetry between English active voice and passive voice lies in English verbs themselves. Therefore, taking English part of speech as the breakthrough point may be used as a research method to study and understand the regularity of English language and even the world language.
Finally, how to reflect the deep-seated reasons for the asymmetry of English active and passive voices, such as the behavioral characteristics of verbs, English syntax, and differences in thinking between English and Chinese, is a problem worthy of further discussion.
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By consulting literature and reading relevant materials, I write my thesis in strict accordance with the format and requirements of my graduation thesis. After being examined by the instructor and rechecked by the teacher, the thesis has reached the requirements of undergraduate graduation thesis, and I hereby apply for graduation thesis defense.
After a long period of full preparation, all the design materials have been prepared, and all the required contents of graduation design (thesis) have been completed in the constant scrutiny of the first draft, the second draft, the third draft and the essay. The contents submitted to the defense team now are: 1, graduation design (thesis) task book, 2, graduation design (thesis) opening report, and 3, graduation thesis.
Mid-term Checklist for Graduation Design (Thesis) Tutor, 7. Application form for graduation design (thesis) defense. To sum up, I have the ability to participate in the defense, and now I submit a formal application to the defense team, hoping to get approval! Tutor's opinion: In the process of writing the thesis, the student studied the theory and method of time series seriously and systematically, consulted a large number of documents and listened to the tutor's opinion humbly. The content of the paper is substantial, the hierarchical structure is reasonable and scientific, the format is standardized, and the language expression is clear and fluent. I have reached the level of undergraduate thesis and agreed to participate in the defense.