为什么my brother didn't go to bed until my father came back last night 要写my brother didn't go to bed until my father came b

问题描述:

为什么my brother didn't go to bed until my father came back last night 要写my brother didn't go to bed until my father came back last night 不写my brother doesn't go to bed until my father came back last night

句子中的last night,暗示是过去时态,所以对应的do药用过去时态did,而不是does