go back on a promise

• 食言；违约；违背诺言

go back on a promise的用法和样例：

例句

1. He has never reneged on a promise.
   他从来不食言。
2. Forgive me for breaking my promise.
   原谅我食言。
3. Could a defaulter remain in the euro?
   欧洲是否还有其他违约者？
4. They are scrambling for cash to avoid defaulting on bank loans.
   他们纷纷争取现金以避免在银行贷款上违约。
5. I felt guilty after breaking my promise.
   我违背诺言後感到内疚。
6. We shouldn't rat on our promise.
   我们不应该违背诺言。