英语口语大赛用英文有两种表达：English speaking contest、English speaking competition.
相关介绍例句：
The final competition of English speaking contest has come to the end, thank you for coming!
（图片来自网络侵删）
英语口语大赛决赛到此圆满结束，感谢你们的到来。
It was my privilege to take part in the First National Practical English Speaking Contest for Professional College Students.
非常荣幸参加了本次全国首届高职高专实用英语口语大赛。
First of all, let's welcome our headmaster Mr Xu to have the opening remarks for this contest.
首先，让我们用热烈的掌声有请我们的许校长为本次英语口语大赛致开幕词，大家掌声有请！
