I have been in ShangHai from three monthes ago. 这句不对.要改成since.
现在完成时强调这一段时间以来持续的行为.
since表示自从过去某个具体时间以来
since three monthes ago和since 12 July都正确
I have been in ShangHai from three monthes ago. 这句不对.要改成since.
现在完成时强调这一段时间以来持续的行为.
since表示自从过去某个具体时间以来
since three monthes ago和since 12 July都正确