however

however
however无论如何；不管多么；不管怎样
However hard it rained, they go on hiking.
不管雨下得多大他们仍继续徒步旅行。
However hot it is, he will not take off his coat.
无论多热,他也不会脱掉外衣。
She leaves her bedroom window open, however cold it is.
无论天气多么冷，她都敞著卧室的窗户。
However I approached the problem, I couldn't find a solution.
这一问题我不管怎样都无法解决。
Nancy tried to get her report over however difficult it might be.
这份报告再怎么难，南希还是试着去完成。

详解：

however后可直接加形容词/副词，再加主语，加谓语动词。在该结构句中，however表示“无论……，不管……”。
However rich people, they always want more.
无论人们有多富裕，他们总还是想要更多。

furthermore<-->hence