[show|teach] {sb} the ropes
1
to show or teach someone how a particular job or task is done
The origin of the idiom "know one's stuff" is derived from the word "stuff" in the sense of knowledge, expertise, or skills. It is a colloquial expression that has been used to describe someone's proficiency or competence in a particular field or subject matter. This expression is used to convey that someone possesses a deep understanding and expertise in a specific area or topic. It is often used to commend or acknowledge a person's knowledge and competence, especially in professional or academic contexts.
- When it comes to astronomy, Professor Smith really knows his stuff.
- The mechanic at the garage knows his stuff; he fixed my car in no time.
- If you have questions about history, ask Sarah.She really knows her stuff.
- In a debate, it's important to know your stuff and be well-prepared.
- The mentor taught him the ropes of public speaking.