

내일 국어 시험이 있어요.
[nɛil kukʌ siʌmi is͈ʌjo.]
I have a Korean test tomorrow.
국어 선생님이 정말 친절해요.
[kukʌ sʌnsɛŋnimi t͡ɕʌŋmal t͡ɕʰint͡ɕʌlɛjo.]
The Korean teacher is really kind.
저는 국어를 제일 좋아해요.
[t͡ɕʌnɯn kukʌlɯl t͡ɕeil t͡ɕoahɛjo.]
I like Korean the most.
"국어" is in the lesson "Education" (Level 14), along with 12 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.