※ While we thoroughly inspect used educational books, there is a rare possibility of check marks or highlighting. Please be aware of this before purchasing. ※ Although difficult to see in the images, there is a slight yellowing on the edges of the pages. 660-page English learning material, DUO 3.0 - Title: DUO 3.0 - Language: Japanese - Content: English learning material - Number of pages: 660 - Size: B6 size - Author: Yoichi Suzuki - List Price: ¥1,320 - Publisher: ICP Co., Ltd. Inspired by the Japanese "Iroha Uta" (a traditional poem), this book condenses 1600 important modern English words and 1000 important idioms into 560 English sentences without repetition. In the past, you could only learn 560 important words from 560 example sentences, but with DUO, you can completely master a standard-level vocabulary book's worth of words + an idiom book's worth of idioms with just 560 English sentences. For example, in this sentence: Medical breakthroughs have brought about great benefits for humanity as a whole. (Medical breakthroughs have brought about great benefits for humanity as a whole.) You can master 4 important words (medical / breakthrough / benefit / humanity) and 2 important idioms (bring about... / ... as a whole). ■ Sentences Worth Memorizing ■ Even if combined without repetition, it's meaningless if the sentences are unnatural or awkward. All the main sentences in DUO 3.0 are "sentences worth memorizing," completed with 15 native speakers, including 3 American university professors. ♡------------------------------------------------ ◾️ No writing found. ◾️ Cleaned with alcohol wipes (disinfecting and wiping) If you have any concerns, please comment ☆