让步状语从句
主要连接词：although (虽然)/ even if (though) (即使)/ while (尽管)后两个是考试的重点。no matter what… (= whatever无论…什么…) / no matter how… (=however， 无论怎样…) / whether…or not (不论…还是…)这是让步句考试的重点。
例如：
No matter what (或Whatever) may happen， we will not change our plan. (无论可能发生什么，我们决不改变计划。)
No matter how difficult (或However difficult) the journey may be， we will not change our plan. (不管路程有多难，我们决不改变计划。)
We should not worry her whether she is well or ill (或whether she is ill or not)。(无论她身体好坏，我们都不应使她烦恼。)
注意：no matter what后面跟名词或名词性结构；no matter how后面跟形容词或副词，不要搞错；用了no matter what / no matter how就不能再用whatever / however.