即兴演讲可以利用一些简单而常用的英语单词来展开：首先，选择一个主题，如“友谊”。

1. Introduce: 开场时可以用"Hello, everyone! Today, I want to talk about the importance of friendship."（大家好！今天我想谈谈友谊的重要性。）2. Explain: 接下来，可以用一些常用的单词和词组来解释友谊的含义和特点，比如"trust", "support", "caring", "loyalty"，例如，“In my opinion, friendship is built upon trust and support. Friends care for each other and show loyalty in times of need."3. Personal Experience: 运用一些个人经历或故事来加强说服力。例如，“I have a close friend who has always been there for me. When I was going through a difficult time, she provided me with endless support and encouragement, which truly showed the power of friendship."4. Benefits: 强调友谊带来的好处。使用一些词汇如"happiness", "laughter", "emotional support", "memories"等等。例如，“The benefits of friendship are countless. Having true friends brings happiness and laughter into our lives. They provide us with emotional support, and we create wonderful memories together."5. Conclusion: 总结时，可以再次强调友谊的重要性和感激之情，用词简洁明了，例如，“In conclusion, friendship is a treasure that we should cherish. Let's value and appreciate the friends we have, and strive to build strong and meaningful connections with others.”以上是一个简短的例子，用三个英语单词即兴演讲。当然，你可以根据主题和具体情况自由发挥，用更多的单词和词组展开你的讲演，使其更丰富和有说服力。在即兴演讲中，也要保持流畅和自信，不必过于拘泥于单词数量，而是更注重表达的内容和逻辑性。