whatever that is 是什么词性

是代词词性，例如：

1.I thought that my upbringing was 'normal'， whatever that is.我认为我的成长过程甭管怎么说还算“正常”。

2.Go do something important right now， whatever that is for you.现在就去做重要的事情，只要你认为重要就行。

3.I just want to see whatever that is.我只是想看看那到底是什么。