问题描述:
为什么是he has been dead for 10 years而不是he has dead for 10 years?
为什么I have studied English for 10 years是对的?
为什么I have studied English for 10 years是对的?
问题解答:
我来补答展开全文阅读
问题描述:
问题解答:
我来补答