名词形式是speaker，例如：
1.There was a tight group of people around the speaker.演讲人周围严严实实地挤了一群人。
2.What is the relationship between the two speakers?因此而知，这是一题判断说话者间关系的试题。
3.Our programme ensures daily opportunities to practice your study language with native speakers.我们的学习课程保证你们每天有机会和讲母语的人一起进行语言练习。
