Grammar Info
Level 1: 2/15
았/었/였어요
Past tense 
                                                Structure
                                                                Verb + 
Conjugation
                                                                Verb stems ending with ㅏ or ㅗ + 
                                                                Verb stems ending with a vowel other thanㅏ or ㅗ + 
                                                                Verb stems 하 + 
About 이에요 / 예요 
                                        - 
                                                                        사다 = 샀어요 I bought / You bought / They bought 
- 
                                                                        오다 = 왔어요 I came / You came / They came 
- 
                                                                        적다 = 적었어요 I wrote / You wrote / They wrote 
- 
                                                                        하다 = 했어요 I did / You did / They did