no matter how/wh-
no matter后面必须跟how, what, where, when, if, whether。
regardless必须跟of。它跟no matter how/wh-一样，必须跟一个总结性的名词。
The club welcomes all new members regardless of age.
He went ahead and did it, regardless of the consequences.
或者用regardless of whether。
可使用whether … or … 结构，连接两个子句或句子成分。
For Loyalty is still the same, Whether it win or lose the Game.
William, whether by accident or by design, was not admitted. (preposition)
The increase in the number of officials.., which should give pause to every man, whether Liberal or Tory. (noun)