Question

The structure: 首先...其次…

Accepted Answer

This structure is used to say one thing WILL happen first and another thing second or next. 首先 and 其次 both appear at the beginning of consecutive phrases separated by a comma: 做一件事情首先你要明白为什么做，其次要知道怎么做。 When doing something you first want to know why you are doing it and second you want to know how to do it.

Front	The structure: 首先...其次…
Back	This structure is used to say one thing WILL happen first and another thing second or next. 首先 and 其次 both appear at the beginning of consecutive phrases separated by a comma: 做一件事情首先你要明白为什么做，其次要知道怎么做。 When doing something you first want to know why you are doing it and second you want to know how to do it.

Thing Structure 首先...其次 Happen 首先 其次 Beginning Consecutive

Thing Structure 首先...其次 Happen 首先其次 Beginning Consecutive