V. + (으)니까 "because," "since," "as," "for"

V. + (으)니까 "because," "since," "as," "for"
This causal connective often omits 까 and becomes (으)니. It is used with a question or a "let's" sentence.

• 시간이 없으니까 빨리 가자.
  => Since we don't have much time, let's go right away.
  
• 그 동안 열심히 공부했으니까 잘 할 거예요.
  => Since you have studied hard, you will do well.
  
• 택시는 비싸니까 지하철을 탈까요?
  => Since taxi fare is expensive, should we take the subway?
  
• 약을 먹으니까 머리 아픈 게 없어졌다.
  => Because I took the medicine, I don't have a headache.