一般过去时直接加ed的单词：
work-worked， add-added添加， use-used ，name-named命名 ，shout -shouted， watch- watched，wash-washed，scream-screamed 尖叫， brush -brushed，celebrate-celebrated庆祝，realize-realized，graduate-graduated毕业，listen-listened，list-listed，like-liked ，love-loved
