愚公,NewVoice,小薇,Newton等同学(若有落下的同学不好意思啊,比较仓促)都用对了。语法功底深厚。
原文是对过去时的虚拟:要是我在年轻时养成了这种习惯,就可以避免时间上惊人的浪费。
愚公: If I had cultivated this habit while I were young, I would have not waisted a staggering amount of time.
小薇:If I had had this good habit when I was young, I would have avoided huge waste of time.
NewVoice: If I had acquired such habit in my youth, I would have avoided wasting a great amount of my time.
Newton:It would have avoided an astonishing waste of time if I had been accustomed to such habit when I was young.