Even soEven ifEven though这三个词,都有虽然即使的含义,用法上和具体使用场景有什么不同呢?

Even soEven ifEven though这三个词,都有虽然即使的含义,用法上和具体使用场景有什么不同呢? 英语语法even ifeven ( )exhausted,the young actor continued to perform energetically.A if B asC when D since为什么不是A能不能说的详细点 even ifeven if 可以和but连用么?要权威!可以这样用么：Even if the world abandoned me,but I also accompany you那个翻译的朋友请注意，中文是，即使世界抛弃了我，可我还有你的陪伴。查了很久，都说altough you don't even know I don't even exist even thouth you didn't say I you don't even know 歌词 Like I don't even know here I don't even have a i don't even like snails can't i even dream是什么意思? Don't get angry,get even. I can't even breathe!什么 意思 That wasn't even deft.怎么翻译 I wasn't even finished.怎么译? even Even even