基本结构应用

I promise to call you back tomorrow. （我承诺明天给你回电话）

不同场景扩展

The company promises to deliver the goods within 30 days. （公司承诺30天内交货）

She promised to help with the project, and she kept her word. （她承诺帮助项目，兑现了承诺）

条件与结果结合

I'll promise to finish the report if you finish your homework. （你完成作业我就完成报告）

Unless you promise not to interrupt, I'll keep talking. （除非你承诺不打断，否则我会继续说）

否定与反义表达

I can't promise anything right now. （我现在不能承诺任何事）

He broke his promise to not call you last night. （他昨晚违背了不给你打电话的承诺）

固定搭配示例

The future holds limitless promise. （未来充满无限希望）

注意事项

动词"promise"后需接"to do"结构，例如：

The company promised to deliver the goods within 30 days.

若需强调对过去承诺的遵守，可用"keep one's promise"，例如：

She kept her promise to visit them every weekend.

以上例句覆盖了日常交流中常见的用法，可根据具体语境灵活调整。