go back on/upon/from

• 违背； 背叛

go back on/upon/from的用法和样例：

例句

1. He never warped from the path of common sense.
   他从不违背常情。
2. His father told him not to go back on his promise.
   他的父亲对他说，不要违背自己的诺言。
3. Far from accepting my advice, he went back on me.
   他非但不接受我的劝告，反而背叛了我。
4. The king banished the traitor from the realm.
   国王把背叛者驱逐出王国。