Mastering the difference between "opening a door" and "the door opening." The Value of a PDF Format

$$ \beginarrayl \textryokan (Japanese-style hotel) \ \textkaado (credit card) \ \textsuupaa (supermarket) \endarray $$

New verb forms such as Potential (can do), Volitional (intention), and Imperative (command) are introduced.

Be careful: many free PDFs online contain typos, missing words, or incorrect pitch accents. Here are the best sources: