 Mon Sep 04, 2006 5:41 am At/In/On: He's is an expert at/in/on woman psychology |
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Dear teachers,
Please read:
1. He's is an expert at/in/on woman psychology.
2. He's is an expert at/in/on modern literature.
3. She's an expert at/in/on getting her own way.
Do you choose "at", "in" or "on" for each sentence? For each sentence, all are possible and interchangeable? If not, how to distinguish when using "at", when using "in" , when using "on"?
Quoc |
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tung quoc
I'm here quite often ;-)
Joined: 13 Aug 2006
Posts: 372
Location: VIETNAM
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Prepositions are given.Everything is clear there