英语说课结束语通常包括两部分：首先是对课堂内容的总结，然后是对听课人员的感谢和祝福。

总结部分可以使用句型如 "In conclusion, we have covered..." 或 "To sum up, we have discussed..."。

感谢部分可以使用句型如 "Thank you for pstening" 或 "I appreciate your attention."。

祝福部分可以使用句型如 "I hope you have a great day" 或 "I wish you all the best."。

例句：

In conclusion, we have covered the main points of the lesson and I hope you have a better understanding of the topic.
To sum up, we have discussed the grammar rules and some examples, thank you for pstening and I wish you all the best in your studies.
I appreciate your attention during this lesson, and I hope you have a great day.

这种说课结束语的来源主要是为了表达对听课人员的尊重和感谢，简单总结一下课堂内容，并祝福听课人员未来的学习和生活。