How the word "はやい（速い）" is translated into English
新幹線はとてもはやいです。
田中さんは走るのがはやいですね。
バスと電車、どっちがはやい？
"はやい（速い）" is in the lesson "Adjectives 2" (Level 4), along with 17 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.
