Some examples and use cases from the internet:

Some examples and use cases from the internet:

• Mar 27, 2008 ... ''I'm an expert on digital cameras'' or ''I'm an expert at digital cameras'' Is it ''be an expert on sth'' or 'be an expert at sth'' What about if it is an ...
• Mar 10, 2008 ... Here is my own idea of the difference: expert at is mostly for activities, so to say you are an "expert at" something means you are especially ...
• Keith Ferrazzi. Networking Secret #6: Become an Expert at Something. To get my first postcollege job, at Imperial Chemical Industries (ICI), I talked my way into a ...
• ... expert in child psychology an expert on modern literature expert (at/in/on doing something) He's an expert at getting his own way. Don't ask me—I'm no expert!

• Apr 27, 2008 ... If you are skilled/good at doing something you are an expert in/at doing that. If you have studied a particular subject and you know a lot about it ...
• My brother is an expert in foreign policy. We've asked to interview an expert on foreign policy. ASK YOUR QUESTION. Archive. Select month... September 2015  ...
• Mar 27, 2008 ... vic7 New Member. Italian. She is an expert in drafting the minutes of a meeting?is it ok? vic7, Sep 17, 2012 · #5 · neal41 Senior Member.
• Apr 16, 2013 ... I am not an expert in typhoid fever but I have seen hundreds of cases. While I say I am not an expert on the brain and brain diseases, I am just ...