? In the English Language Area of the 12-year National Basic Education Curriculum, it is stated in the learning content section that the students should be able to use 300 words in elementary school and learn at least 1,200 words in secondary school. In high school, it is 4,500 words. The syllabus also provides a reference list of 2,000 words, which includes 1,200 basic words and 800 other common words for middle school. However, the 300-word vocabulary for elementary school does not provide clear vocabulary content, and the number of 1,200 words for junior high school and the reasonableness of the word choice are often questioned. Therefore, this integrated project uses an empirical research method based on multiple corpora to examine the number and content of elementary and middle school vocabularies and to try to provide suggestions for improvement. This sub-project focuses on the number and content of vocabulary in elementary and junior high schools from the perspective of written vocabulary, using a variety of well-known written language corpora.
? Written language corpora are samples of actual written language usage situations, representing the application of written language in daily life, and are therefore suitable references for written word usage. A variety of comprehensive written language corpora are available for reference in foreign countries. This project compares the word frequency lists produced by the written language databases and various word lists, including those from well-known foreign databases and existing foreign word lists, and analyzes the suitability of the word lists in terms of cross-coverage and database coverage. The analysis of textbook vocabularies produced in Subproject 1 and the comparison of oral corpus vocabularies produced in Subproject 3 are used as the basis for answering the above questions.
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