Korean Conjugating the “요/yo” form 요/yo form is one of basic Korean grammar and you might already learn this. However, if you are still not sure this, it will be good to read this post. Adding 요/yo to verb stem is when speaking politely and 요/yo is NOT for close friends (same age as you or younger), small children and animals. Please read examples below.

To eat먹다-먹어요

To sleep 자다-자요

To go 가다-가요

To leave 떠나다-떠나요

To come 오다-오아요-와요

To give 주다-주어요-주워요

When you see the last vowel ㅗ or ㅏ, you should add 아. For instance: 자다-자요, 가다-가요, 오다-오아요-와요.

With other vowels, you should add 어. For instance, 먹다-먹어요, 주다-주어요-주워요.