Where are the prpositions and what are their subjects(some of them contain more than one?

Question

1)Chhirps of the newly hatched chicks could be heard in the corridor.

2)A plane made an emergancy landing in a corn field.

3)The elephants lumbered past us toward the water hole.

Answer 1

Here's a list of common prepositions.

http://www.englishclub.com/grammar/prepositions-list.htm

In your sentences, I've enclosed the prepositional phrases in parentheses. The first word in each phrase is a preposition.

1)Chhirps (of the newly hatched chicks) could be heard (in the corridor).

2)A plane made an emergancy landing (in a corn field).

3)The elephants lumbered (past us) (toward the water hole).

Prepositions don't have subjects.