(3) 注意however以下两类句型结构：
① however+主语+谓语：
However you travel, it’ll take you at least three days. 不管你怎么走，至少要三天。
However you come, be sure to come early. 不管你怎么来，一定要早来。
② however+形容词或副词+主语+谓语：
However much he eats, he never gets fat. 无论他吃多少, 他都不发胖。
However cold it is, she always goes swimming. 不管天多冷，她都会去游泳。
有时该结构中的主语和谓语可以有所省略：
He was of some help, however small. 他总能帮些忙，不管多小的忙。
I refuse, however favorable the condition. 不管条件多好，我都不接受。
(4) 有时从句谓语可用情态动词：
I’ll find him, wherever he is [may be]. 无论他在哪里，我都要找到他。
Keep calm, whatever happens [may happen]. 无论发生什么事都要保持冷静。
(5) whenever有时可引导时间状语从句，wherever 有时可引导地点状语从句：
Whenever we see him we speak to him. 每次见到他，我们都和他说话。
They teach wherever their pupils are working. 学生在哪里工作，教师们就在哪里上课。
三、让步状语从句与倒装
引导倒装的让步状语从句通常用as和though，但不是能用although：
Poor though I am, I can afford it. 我虽穷，但这东西还是买得起的。
Much as I like Paris, I couldn’t live there. 尽管我喜欢巴黎，但我不能住在那里。
【注】as 可以在以上这样的倒装结构中引出让步状语，但若不倒装，则不能用as，而与之相反，although在不倒装的结构中可引导让步状语，但在倒装的结构中却不可以用。