

左の目が痛いです。
左のエレベーターに乗ってください。
写真の左の人はだれですか。
"ひだりの(左の)" is in the lesson "Adjectives 4" (Level 17), along with 11 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.