没有人可以取代你
1.ever
[英][ˈevə(r)][美][ˈɛvɚ]
adv.
永远; 曾经，这以前; 究竟，到底; 可能;
She's got a great voice and is singing better than ever.
她的嗓音非常好，现在的唱功比以往任何时候都要好。
2.replace
[英][rɪˈpleɪs][美][rɪˈples]
vt.
代替; 替换; 把…放回原位; （用…）替换;
he shower that we put in a few years back has broken and we cannot afford to replace it.
我们几年前安装的淋浴器坏了，但买不起新的来换。
3.could的用法
一、表过去的可能和许可
（多用于
间接引语中）
At that time we thought the story could not be true.
那时我们认为所说的事不可能是真的。
Father said I could swim in the river.
爸爸说我可以在河里游泳。
二、表过去的能力
I could swim when I was only six.
我刚六岁就能游泳。
Could在肯定句中表示过去的能力时，常表抽象的一般的能力。
He could be very naughty when he was a child.
他小时候会是很顽皮的。
三、表“允许”
可表示委婉客气的提出问题或陈述看法
Could I use your bike?
Yes, you can.
他会记得那时吗?
I’m afraid I couldn’t give you an answer today.
恐怕我今天不能回答你。
The teacher said you could go to the store for sweets.
老师说你可以去商店买糖。
四、Could/can+have done 结构表示对过去发生的事情的“怀疑”或“不肯定”
could 加完成式还用于肯定句时一般表过去可能完成而却未完成的动作。
Can they have won the basketball match？
他们赢了那场篮球赛吗？
What you referred to just now can have made her very sad.
你刚刚所谈到的可能令他很伤心。
You could have completed the task a little earlier.
你本来能早点完成任务的。（但事实上并没有提前完成任务）
I could have passed my examination easily but I made too many stupid mistakes.
我本可以轻易通过考试，但我犯了太多不该犯的错误。
如表具体做某一件事的能力时，则须用 be able to .
He was able to translate the article without a dictionary.
他可以不用词典翻译那篇文章。
could加动词原形
所以 翻译是 没人能取代你