抄録
Previous studies have highlighted a substantial disparity between junior and senior high school English textbooks. However, the details of this gap have not been thoroughly examined to draw educational implications. The current study compares textbooks for 9th and 10th grades with an aim to uncover the factors contributing to this gap, from the perspective of the co-occurrence of grammatical items in sentences. The results reveal a higher percentage of sentences containing more than two grammatical features targeted in the current study in senior high school textbooks than in junior high school textbooks. Additionally, an increase in mean length of sentence is observed, along with a marked rise in the frequency of certain grammatical items such as conjunctions, to-infinitives, and postmodifications by prepositional phrases. These findings suggest that bridging the gap between junior and senior high schools requires a primary emphasis in high school English classes on teaching students to process longer but structurally simple English sentences easily, rather than a specific focus on newly introduced complex grammatical structures.
https://ror.org/057zh3y96 