Usages of ~haeseo
도마 위에서 토마토를 자를 때 칼을 조심해서 써요.doma wieseo tomatoreul jareul ttae kareul josimhaeseo sseoyo.
When cutting tomatoes on the cutting board, use the knife carefully.
서류를 확인해서 교수님께 제출해요.seoryureul hwaginhaeseo gyosunimkke jechulhaeyo.
I check the documents and submit them to the professor.
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We have an entire course teaching Korean grammar and vocabulary.