What is the prepositional phrase in the sentence? Put the lasagna in the oven tonight if you don't mind.

1) put the lasagna
2) in the over
3) the oven tonight
4) if you don't mind

I think #1

No.

Check this list of prepositions.

http://s-media-cache-ak0.pinimg.com/originals/7a/6a/19/7a6a199d93dd6ca88eeae6c761586b59.jpg

Remember that a prepositional phrase begins with a preposition and ends with a noun or pronoun that is its object.

Examples:
by the road
under the bed
of my family
in the living room
on the table

Thanks, Ms. Sue # 2

Yes, # 2.

its in the oven

THANK YOUUUUUUUU SSSSSSSSSSSSSSOOOOOOOOOOOO MMMMMMMMMMMMMUUUUUUUUUCHHHHHHHHHHHHHHHHHHHH

Actually, the prepositional phrase in the sentence "Put the lasagna in the oven tonight if you don't mind" is "in the oven." A prepositional phrase begins with a preposition (in this case, "in") and includes the object of the preposition (in this case, "the oven"). Therefore, option 2, "in the oven," is the correct answer. Option 1, "put the lasagna," is just the verb phrase. Option 3, "the oven tonight," is a noun phrase without a preposition. Option 4, "if you don't mind," is a dependent clause acting as a condition and does not function as a prepositional phrase.