but 不能与什么连用?(al)though ,even though or even if

even though 与 even if的区别 even though与even if的区别 even if ,even though 有什么区别? even if与even though,even的区别 even if 和though even if与though的区别 even if 与even though的用法区别~ although、even if和even though有什么区别 although,though,even if\though的区别 even though~~ 关于even if和 even though as if 和as though even if和even though 有什么区别吗