在英语中表先后顺序的 first of all,这种的 接下来该用什么词呢?

first
second
third
then
at last / lastly / finally

当然是用second of all 啦。当然要前后照应一致了。
如果是用firstly，那么接下来肯定是secondly。

first of all...secondly...thirdly...

First of all,I'm very happy. 首先，我很高兴。