问题描述：
I’m glad you’ve come back from Beijing.Please tell me how long you ________there
为什么用stayed 而不用have stayed had stayed 或have being stayed
stay是延续性动词把。
为什么用stayed 而不用have stayed had stayed 或have being stayed
stay是延续性动词把。
问题解答：
我来补答展开全文阅读