根据搜索结果，以下是适合搭配 "proud of you" 的励志英语开场白推荐，结合权威性和时效性信息整理如下：

一、正式场合适用开场白

示例一

"Ladies and gentlemen, it's my honor to stand before you today and share a message of encouragement and inspiration. We all face challenges and obstacles in life, but it's during these times that we truly discover our strength and resilience. I'm proud of each and every one of you for taking the steps to overcome your struggles and pursue your dreams."

（适用于演讲、颁奖典礼等正式场合，强调集体成就与个人努力）

二、教育场景适用开场白

示例二

"No.1 I’m proud of you. "（我为你感到骄傲。）当学生取得进步或展现良好品质时，教师可用此句表达肯定，例如："Your dedication to the project is truly impressive. I'm proud of you"

三、日常鼓励场景适用开场白

示例三

"I'm proud that you can fly. "（我相信我能飞翔。）结合歌曲《Proud of You》的歌词，适用于鼓励他人突破自我、追求梦想的场合，例如："You've shown incredible courage today. I'm proud that you can fly towards your goals"

四、通用励志表达

示例四

"I'm doing great. "（我进展顺利。）简洁有力，适用于肯定他人阶段性成果的场合，例如："Your progress in English learning is remarkable. I'm proud of you"

总结：选择开场白时需结合具体场景，正式场合推荐完整表述，教育场景可用简洁肯定句，日常鼓励则可融入励志歌词增强感染力。