never和ever的区别最好详细点（我指的是普通句子中两者的区别和完成式里两者的区别）谢谢各位啦!

区别是明显的.前者比后者多了个n,这个n源自not,是ever的否定.
从词性上讲,它们都是副词.有ever的是可以用在否定句、肯定句或疑问句中,多用于疑问句中和否定句中,有never的是否定句,是not ever变过来的.如：
Have you ever been abroad?
I have never been abroad.
ever在肯定句中有很多种用法,翻译很灵活.例句可以从词典中找：
(无比较级、*)
1 a.曾经,从来
Have you seen a tiger?.
你见过老虎吗?
Did you see him while you were in Paris?.
你在巴黎时曾见过他吗?
How can I thank you (enough) .
我真不知道该如何感谢你?
b.(不) 曾…; 决 (不…)
Nobody comes to this part of the country.
没有人曾经来过该国这个地区
No Chinese tourist has come to this town.
没有任何中国观光客来过这个镇上
c.曾经
If you (should) come this way,be sure to call on us.
如果你打这儿来,一定要来看看我们
If I catch him!.
要是我逮到他 (我决不饶他) !
He is [was] a great musician if there was one.
如果曾经有过伟大的音乐家,那他就是一个
d.[在比较级、*之後用以强调] 以往,迄今
It is raining harder than .
雨越下越大了
He is the greatest poet that England produced.
他是英国有史以来最伟大的诗人
2 a.经常,总是,始终
He repeated the same words.
他总是重复同样的话
He is quick to respond.
他的反应总是很快
→ EVER since
They lived happily after (ward).
从此以後他们就过著幸福的日子