介绍:
In this lesson, we are introducing some 하다 [ha-da] verbs. When we introduced the present tense conjugation in Lesson #16, and the past tense in Lesson #17, we mentioned that 하다 [ha-da] is conjugated in a special way, because it is followed by 여요 or 였어요 even though all the other verbs whose verb stems end in ㅏ[a] are followed by 아요 or 았어요.
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