第1个回答 2012-05-18
when i was turning on the tv,someone knocked the door.本回答被提问者采纳
第2个回答 2012-05-18
The moment I was turning on the TV ,someone was knocking at the door.
第3个回答 2012-05-18
When ... on
第4个回答 2012-10-05
when i was turning on the tv,someone knocked the door.
祝你学习进步(*^~^*)