May I [let me] introduce myself. 请让我自我介绍一下
Allow me [May I] introduce you to Mr... [introduce Mr...to you]? 让我介绍你跟××先生认识[介绍××先生给您认识]好吗?

introduce a bill into Congress 向国会提出议案.

introduce a guest into an anteroom 领客人进接待室
A new system of management has been introduced into the enterprise. 企业采用一套新的管理方法
introduce sb to (the delights of) skiing 引导某人学滑冰
When was tobacco introduced into Japan? 烟草是什么时候引进日本的?

Relative pronouns introduce clauses. 【文法】关系代名词引出子句
introduce a speech with a joke 说个笑话作为演讲的开场白.

introduce a pipe into the wound 把导管插入伤口里