1. 热恋于,一心想：be based on根据,以......为基础 | be bent on热恋于,一心想 | be beside oneself忘乎所以

2. 一心想要,决心要：be drafted into 征召...入伍 | be bent on 一心想要,决心要 | be dependent on 依靠,依赖,随...而定

3. 专心致志于：belly n.腹部;腹腔 | be bent on 专心致志于 | benficial a.有益的,有利的

4. 专心于：be beneficial to || 有益于 | be bent on || 专心于 | be beset by || 被包围 为困扰, 镶有