my-korean1-2nd-ed

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APPENDIX
Special Conjugation Rules of Verb & Adjective
ㅅ
rule
ㄷ
Rule
ㄹ
rule
ㅂ
rule
으
rule
르
rule
여
rule
When the stem ends in ㅅ, the ㅅ is removed when the next
syllable starts with a vowel. For example, 짓 (build) becomes
지어요( build) and 지으면 (if you build).
When the stem ends in ㄷ, the ㄷ is removed when the next
syllable starts with a vowel . For example, 듣 becomes 들어요
(listen).
When the stem ends in ㄹ, the ㄹ is removed when the next
syllable starts with ㄴ, ㄹ, ㅂ, 오, or 시 . For example, 길(long)
becomes 깁니다 (is long) and 기니까 (because it’s long).
When the stem ends in ㅂ, the ㅂ changes into 오 before +아
and 우 before +어. For example, 돕 becomes 도와요(help)
and 아름답 becomes 아름다워요(beautiful).
When the stem ends in ㅡ, the ㅡ is deleted when the next
syllable starts with a vowel. For example, 크 (big)
becomes 커요(is big) and 아프(sick) becomes 아파요(is sick).
When forming the +아/어 form of stems that end in 르, 르 is
deleted and +ㄹ라/ㄹ러 are added to the stem. For example
자르 becomes 잘라요(cut) and 부르 becomes 불러요(sing).
For stems ending in 하, 하여 can be found instead of 해 in
some formal writing.