既然now that和即使even if是同义词吗?举例子说明

问题描述:

既然now that和即使even if是同义词吗?举例子说明

now that 引导的是原因状语从句,而even if 引导让步状语从句.
eg:1,Now that you know him well,you should understand him.
2,You can't smoke here even if you are the boss.