

한국어는 어렵지 않아요.
[hankukʌnɯn ʌljʌpt͈͡ɕi anajo.]
Korean isn't difficult.
시험이 어렵고 길었어요.
[siʌmi ʌljʌpk͈o kilʌs͈ʌjo.]
The exam was difficult and long.
이 문제는 너무 어려워요.
[i munt͡ɕenɯn nʌmu ʌljʌwʌjo.]
This problem is too difficult.
"어렵다" is in the lesson "Adjectives 2" (Level 4), along with 17 other useful words. LinDuo has 180 topic lessons like this one, 2,380 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.