At the Office
Prepositions of Place, Similarity and Function
Use 'in' with countries, cities, towns and regions.
Example:
He has time management issues when he stays in New York City.
He wants a change of pace after living in Australia.
Use 'at' for place in a city, town or village.
Example:
Our international clientele are staying at the hotel.
The package tours begin at the train station.
Like and As
Use 'like' as a preposition to express that two are objects are similar in some characteristic.
Example:
The toxic packaging looks like sanitary packaging.
The poor service was like something out of a Kafka novel.
Use 'as' to express the function that a person takes in an organization.
Example:
Tom worked as a clerk doing check-ins.
Sheila worked as a realtor selling first class properties.