许诺以获支持

例句：

1. 1.I promised to help you with your homework.
   我答应帮你完成作业。
2. 2. Promise yourself that you will do your best.
   给自己一个承诺，尽你所能。
3. 3. The company promised a raise for all employees.
   公司承诺对所有员工加薪。