Which word is the preposition and which word is the object of the preposition in this sentence?

A small friendly dolphin swam around our boat.
Please help me. If I fail i'll have to work on the weekend.........

Question

Which word is the preposition and which word is the object of the preposition in this sentence? 

A small friendly dolphin swam around our boat.
Please help me. If I fail i'll have to work on the weekend.........

anonymous · Answer

A preposition is a word governing, and usually preceding, a noun or pronoun and expressing a relation to another word or element in the clause, as in “the man on the platform,” “she arrived after dinner,” “what did you do it for ?”

anonymous · Answer

On/after/for*

anonymous · Answer

http://en.m.wikipedia.org/wiki/List_of_English_prepositions This should help you big time :)

anonymous · Answer

Also, welcome to open study!

anonymous · Answer

I know it's a bit delayed but thank you very much for your help. It is nice having a community full of caring people. I am really starting to like open study :)