How do you actually go about discovering a thing like that?

　　你到底是怎么發現這種東西的？

　　He is not entirely clear on how he will go about it

　　他還沒完全搞清楚該如何處理這件事。

　　I want him back, but I just don't know how to go about it.

　　我想讓他回來，但就是不知道該怎么做才好。

　　He used to go about in a black cape

　　他以前常穿一件黑披風。

　　How did you go about making this marvellous acquisition then?

　　那么你是怎么買到這一絕品的？