suck up to sb.

例句：

1. 1.She always sucks up to her boss to get a promotion.
   她总是巴结上司以求晋升。
2. 2. He sucked up to his boss by giving him lots of praise.
   他通过给予老板大量赞扬来讨好他的老板。
3. 3. The new manager was accused of sucking up to the boss for personal gain.
   新来的经理被指控为了个人利益而巴结老板。