不能引导定语从句

　　加ever的疑问词可以引导让步状语从句和名词性从句，但不能引导定语从句，不过在引导名词性从句时加ever的疑问词可进行分解，比如whoever引导名词性从句可分解成anyone who，那么这时候可以理解成是特殊的定语从句，相当于把定语从句的先行词和关系词合并在一起。

　　1. 引导让步状语从句 Whenever someone throws in some rubbish，it produces a piece of music. However cold it is，she always goes swimming. 2.whatever、whichever、whoever等引起主语从句、宾语从句。 如宾语从句： I will listen to whatever he says. 主语从句： Whatever he does can't attract his attention。