I have been more quiet than in the past.这句话的in the past 这样用对不对?

问题描述:

I have been more quiet than in the past.这句话的in the past 这样用对不对?

对,但in the past前面省略了"I had",所以完整的句子是:
I have been more quiet than I hav in the past.
省略后更地道,更简略.