1. Whoever commits the crime shall be sentenced to ten years in prison.
   任何人犯了此罪就要被判處十年徒刑。
2. Whoever told you that was lying.
   誰對你說這話，誰就在說謊。
3. Whoever can that be at the door?
   在門口的究竟是誰呢？

who.ev.er

pron.（代詞）
Whatever person or persons:
無論誰：無論什么樣的人或人們：
例句：
Whoever comes will be welcomed.
無論誰來都會受到歡迎

Who:
誰：
例句：
Whoever could have dreamed of such a thingôSee Usage Note at whatever ,who
誰會想到這種事呢ô參見 whatever,who