1、 “疑问词 + ever ” “疑问词 + ever ”可分为两类 :“疑问代词 + ever ”： whatever / whichever / whoever （宾格 whomever ）“疑问副词 + ever ”： wherever / whenever / however. 不论是“疑问代词 + ever ”还是“疑问副词 + ever ”，其意义都是“不管 / 无论 + 该疑问词的本义” 。1. “疑问代词 + ever”可引导两种类型的从句，即让步状语从句和名词性从句（主语从句、宾语从句） 。 （1）引导让步状语从句。此时 whatever / whoever / whichev
2、er 分别等于“ no matter + what / who / which”。例如：Whatever happened, he wouldnt say a word. = No matter what happened，he wouldnt say a word. Whoever says so, it is wrong. = No matter who says so, it is wrong.Whichever dictionary you （may） take，you will have to pay at least 20 dollars. = No matter which di
3、ctionary you （may） take, you will have to pay at least 20 dollars.注意：这类从句中应用一般现在时表将来，从句中也常用情态动词 may / might .（2）引导名词性从句。例如： Whoever smokes here will be punished. （主语从句）Beggars will eat whatever they are given. （宾语从句Whichever he likes will be given to him. （主语从句）You may invite whoever / whomever you
4、like. （常用 whoever 代替 whomever）此时它们都不能换成“ no matter + 疑问词” 的形式，但 whoever 等于 anyone who， whatever 等于 anything that.2. “疑问副词 +ever ”： wherever / whenever / however 一般只能引导一种类型的从句，即让步状语从句，此时它们分别等于“ no matter + where / when / how ”。例如： Wherever he goes （may go）. Ill follow him. = No matter where he goes （
5、may go） ，Ill follow him. Whenever I wisited him， he was always busy working. = No matter when I visited him， he was always busy working. However late he is， his mother will wait for him to have dinner together. = No matter how late he is， his mother will wait for him to have dinner together. 注意：当 however 用作连接副词时也可引导名词性从句，而 whenever/ wherever 则不能引导名词性从句。例如： Ill give you however much money you need. （宾语从句，此时 however 不能改成 no matter how ） 。 所以还有一个区别就是 however 能够引导名词性从句，而 no matter how 则不能.
