Anticipatory breach of contract consists of express anticipatory breach of contract and implied anticipatory breach of contract, which is the specified by the Anglo-American law system. 介绍了英美法系的预期违约形态是法官在案件审理过程中,从大量的特殊案例中归纳出来的普遍原则。预期违约的形态包括明示预期违约和默示预期违约。