whoever类似的词
是however:
adv. 无论如何不管怎样(接副词或形容词)然而可是
conj. 无论以何种方式 不管怎样
Many problems, however, escape detection.
然而许多问题却未被察觉。
However, traders tended to discount the rumour.
但是,商人们倾向于不理会这个传闻。
However, he underestimates the scale of the problem.
然而,他却低估了问题的严重性。