即可以加動詞原型，又可以加名詞，代詞

It's a film that examines what it means to be bound to another person.

這部電影檢視了被另一個人束縛住意味著什麼。

All those who follow in my bloodline shall be bound to its fate for I will risk no hurt to the Ring.

我的後代將永遠對它效忠，我絕不容許魔戒受到任何損傷。

The authorities will be legally bound to arrest any suspects

當局負有逮捕所有疑犯的法律責任

be bound to 後接動詞原形do，be bound to do是固定搭配，中文意思是“一定要做某事，必然”

He'll be bound to find out what the skipping-rope is.

If you started counting, you'd be bound to get to it eventually.

Multiple Web service bindings cannot be bound to the same service.

be bound to必定，註定

　用法：be bound to結構中的to不是介詞，是不定式的象徵。

　　例句：He who never learns from the past is bound to fail.(2015年6月四級)

　從不向過去學習的人必定會失敗。

　結構分析：該例句用的是現在一般時態，He是主語,who neverlearns from the past是who引導的定語從句，其中who指前面的he，是主語，never（從不）是狀語，learns是謂語，from the past是狀語，is bound to fail是謂語。