have you ever concerned和were you ever concerned的用法区别?

have you ever concerned和were you ever concerned的用法区别? would you ever和have you ever的区别是什么? have you ever 和 do you ever 有什么区别? do you ever 与 have you ever 的区别 have you ever 和 did you ever Did you ever...和Have you ever...有什么区别?什么时候用Did you ever...什么 Have you ever、did you ever、do you ever的区别,及答句形式 have you ever been to China和have you ever been China有什么区别? you have ever said before和you have ever said 两个英语句子的区别have you ever studied with a group?和 do you ever pr Have you ever eaten rice和Have you eaten rice yet的区别? Have you been to Rome和Have you ever been Rome的区别