"提高英语口语能力" 用英语说为 "improve one's Engpsh speaking skills"。
来源： "提高" 是 "improve"， "能力" 是 "skills"， "英语口语" 是 "Engpsh speaking" 的翻译。
例句：
I need to improve my Engpsh speaking skills. (我需要提高我的英语口语能力。)
She is taking a course to improve her Engpsh speaking skills. (她正在上课提高她的英语口语能力。)
He is practicing with a language exchange partner to improve his Engpsh speaking skills. (他正在和语言交换伙伴练习，以提高他的英语口语能力。)