The lady who is standing behind the counter served me?请问这句是什么时态?2.定语从句是不是既可以修饰主语也可以修饰宾语 如果我想修饰宾语这句话怎么改呢 (121)

The lady who is standing behind the counter served me?请问这句是什么时态?2.定语从句是不是既可以修饰主语也可以修饰宾语 如果我想修饰宾语这句话怎么改呢 (121)
The lady who is standing behind the counter served me?请问这句是什么时态?
2.定语从句是不是既可以修饰主语也可以修饰宾语 如果我想修饰宾语这句话怎么改呢
(121)

The lady who is standing behind the counter served me?请问这句是什么时态?2.定语从句是不是既可以修饰主语也可以修饰宾语 如果我想修饰宾语这句话怎么改呢 (121)
1 这是看主干部分,我觉得是过去时,因为 the lady served me 是发生在过去的动作,已经发生了,前面who引导的定语从句修饰the lady