在英语中，“违背”可以翻译为“violate”、“go against”或“run counter to”等短语。当你在写作文时，如果需要表达“违背”某个原则、规则、承诺或事实，可以根据具体的语境选择合适的短语。

违背历史事实

The movie seemed to violate historical facts, as it took many liberties with the events of World War II.

违背良心的合同

Signing the contract was a violation of my conscience, as it went against my moral principles.

违背人民的意志

The government's decision to increase taxes violated the will of the people.

违背条约

By attacking our country, they violated the treaty that had been in place for decades.

违背诺言

The President betrayed the public by going back on his promise not to raise taxes.

违背规则

Cheating on the exam is a violation of the school's rules and regulations.

违背逻辑

His argument was full of logical fallacies and violated common sense.

在使用这些短语时，确保它们与句子的主语和谓语在数上保持一致，并且符合句子的语境和时态。这样可以使你的作文更加准确和生动。