开场白和结束语是任何英语小组展示的关键部分，因为它们分别为演讲设定了基调并为其画上了圆满的句号。以下是一些建议的开场白和结束语示例：

开场白（Opening Remarks）：

2. Good morning/afternoon/evening! I hope you're all ready to dive into the fascinating world of [主题]. Let's get started, shall we?

3. Thank you all for joining us today. We have prepared a presentation that we believe will be both informative and engaging on the topic of [主题].

5. Welcome to our English group's presentation. We've worked hard to bring you an insightful look into [主题], and we hope you enjoy the journey with us.

结束语（Closing Remarks）：

1. That concludes our presentation on [主题]. Thank you for your attention and participation. We would now be happy to answer any questions you may have.