【以 Can Do Statement 設計的美式英語教材】
課程有效結合溝通式教學法，並按歐洲語言評量 CEFR 架構，推出以「語言能力指標 (Can Do)」為成果導向之成人英語主教材。全系列共分四個級數，各級數皆提供A/B上下分冊版本，彈性配合老師授課時數安排。
富含個人化口說練習活動，讓學生充分練習語言並運用在日常生活中。
新版單元閱讀文章更新，並融入最新時事及字彙(如：Fake News、Mobile App)，與時俱進。
學生課本附線上自修練習(Online Self-study)，內容豐富多元，包含：文法/字彙測驗、聽力、發音等各，讓學生有更多課後練習。
課程結合街頭訪談影片，提供生活化的口語表達範例。
線上教學資源豐富，可供免費下載，包含：課程音檔、課程影片、影片學習單、額外學習單、單元複習考題等。
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可至「相關下載」下載劍橋CLMS線上平台使用教學。
Four Corners Second Edition combines effective, communicative methodology with a practical, ‘can-do’ approach. Twelve units in each of the four levels (CEFR A1 to B1+) give students the language they need to communicate with confidence. Clear learning outcomes and ‘can-do’ statements for every lesson, linked to the Common European Framework of Reference (CEFR), help teachers and their students measure the progress being made. The Student’s Book includes a unique code for Online Self-Study, and can also be purchased with an Online Workbook that allows teachers to track their students' progress. Other components include a print Workbook, Teacher's Edition with Complete Assessment Program, Presentation Plus classroom presentation software, audio and video files.