在说话前面使用英语可以使用诸如 "Before I start speaking","Before I begin",或 "Before I commence" 等表达方式。这些表达方式来自英语中常用的介词 "before" 和动词 "start","begin","commence" 等。

例句:

Before I start speaking, I just want to thank everyone for coming.
(在我开始讲话之前,我只想感谢大家的到来。)

Before I begin, let me just explain the agenda for today's meeting.
(在我开始之前,让我先解释一下今天会议的议程。)

Before I commence, I'd pke to apologize for the delay.
(在我开始之前,我想道歉因延迟而给大家带来的不便。)