这是我第一次在会议上讲话,这句话英语翻译,还有,那是我第一次在会议上讲话.是用过去式吧,第二句

Question

这是我第一次在会议上讲话,这句话英语翻译,还有,那是我第一次在会议上讲话.是用过去式吧,第二句

Answer 1

It is +序数词+ time+ that 从句（一定要用现在完成时）,故：
It is the first time that I have spoken at the meeting.
以此类推：
That's was the first time that I had spoken at the meeting.