以下是一段可能的英语新闻主播开场白：

"Good evening, and welcome to tonight's edition of NewsHour. I'm your host, [insert name], and tonight, we'll be covering the top stories of the day, including [insert stories]. Thank you for joining us."

这段开场白包括了问候语、自我介绍、节目名称、节目主题以及感谢观众收看等元素，是常见的英语新闻节目开场白格式。当然，具体的开场白还需要根据节目的风格和主题进行调整。