If I _________ you, I _________________ (take) his advice then.
为什么是were 这不是对过去的虚拟吗?不应该是if i had been you, i would have taken his advice then.吗? 1、 Without your help, I ______________________ (not, achieve) so much in this field.
为什么是would not have achieved 我觉得这是对现在的假设 应该是i would not achieve