話方教材 說話教材 國民讀本 Gouin式語言教學法 說話場景 文法項目 詞彙分析 話し方教材 ゴアン氏言語教授法 場面設定 文法事項 The teaching material for speaking Japanese in hanashikata kyouzai Kokumin dokuhon The textbook used for teaching Japanese in Taiwan public schools soon after the occupation of Taiwan by Japan Gouin method Conversational situation Grammatical points Basic vocabulary