Here are some examples of sentences.
I am a mechanic in a garage.
He is a waiter in a restaurant.
She is a teacher in a school.
If a specific school were used, would that change the sentence?
Which is correct?
1. He is a lecturer at Harvard University
2. He is a lecturer in Harvard University
So in this example sentence number 1 would be correct?
3. He is a lecturer in a university
4. He is a lecturer at a university.
Again, which one is correct?