第1个回答 2012-08-11
您的问题很简单。呵呵。百度知道很高兴帮助您解决您提出的问题。
原句：我哥哥已经参军三年了。
翻译：My brother had joined the army for three years.
百度知道永远给您最专业的英语翻译。本回答被网友采纳
第2个回答 2012-08-11
My brother has been a soldier for three years.
My brother has been a soldier since three years ago.
祝你学习进步，更上一层楼！ (*^__^*)
不明白的再问哟，请及时采纳，多谢！
第3个回答 2012-08-11
My brother has joined the army since 3 years ago.