1·You may feel all the training a waste of time, but I'm a hundred percent sure later you'll be grateful you did it.
你可能觉得所有的训练都是在浪费时间，但我百分之百地肯定，以后你会庆幸你做过这一切。
2·You may feel all the training a waste of time, but I'm a hundred percent sure later you'll be grateful for what you did.
你可能觉得所有的训练都是浪费时间，但是我百分之百确定你以后会感激你所做的一切。
3·Are you a hundred percent sure it's your neighbour?
你百分百肯定这是你的邻居？
—— 《柯林斯英汉双解大词典》
4·I'm a hundred percent certain.
我百分之百的肯定。
5·Is it a hundred percent cotton?
是百分之百纯棉吗？
6·I'm a hundred percent certain.
我百分之百肯定。
7·I am a hundred percent sure.
我百分之百确定。
8·Son: I'm a hundred percent certain.
儿子：我百分之百地肯定。
9·We agree with you a hundred percent.
我们百分之百同意你。
10·I'm not a hundred percent convinced myself.
我自己也不是百分之百全信。