1. He vowed to return home after finishing his studies.
他发誓完成学业后回家。

2. She vowed never to give up her dream.
她发誓永不放弃自己的梦想。

3. They vowed to support each other in difficult times.
他们发誓在困难时期互相支持。

4. He vowed that he would tell the truth.
他发誓会说出真相。

A: He vowed to change his life after the mistake.
A：他在犯错后发誓要改变自己的生活。

B: I hope he can keep his promise.
B：我希望他能信守承诺。

1) 指过去做出郑重承诺或誓言的行为

2) 常用于表达强烈决心或承诺

3) 多用于正式或情感强烈的语境

1. 发誓；郑重承诺

e.g. He vowed to protect his family.
他发誓要保护他的家人。

2. 表示强烈决心做某事

e.g. She vowed that she would succeed.
她发誓自己一定会成功。

verb

1. to make a serious promise or swear to do something

Synonym: swear, pledge, promise