Unit 4

story
故事
did
做, 干; 助动词(do的过去式)
yesterday
昨天
night
夜晚, 晚上
had
有; 吃; 进行(活动)(have的过去式)
went
去; 走; 离开(go的过去式)
saw
看见(see 的过去式)
ate
吃(eat 的过去式)
photo
照片
were
是; 存在(are 的过去式)
was
是; 存在(am, is 的过去式)
happy
快乐的; 高兴的
bought
买(buy 的过去式)
back
回原处; 向后