Answers

2014-12-21T13:37:43+05:30
PrepositionsA preposition is a word which precedes a noun to show the noun's relationship to another word in the sentence. (The word preposition comes from the idea of being positioned before. It is not true to say that a preposition always precedes a noun or a pronoun, but it does most of the time.)

some ex.
above, about, across, against, along, among, around, at, before, behind, below, beneath, beside, between
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2014-12-21T13:44:44+05:30
Preposition is a part of parts of speech .    in gramar preposition  is a type of adposition  a grammar partical  that establishes  a relationship between an object ( usually a noun phrase ) & some other part of a  sentence , often expresing a location or time . 
examples 
1. my cat on  is the sofa
2.i knitted the throughout day
3.they will be not finshed   until lunch time
4.the keys are between the cusions
5. a man hid behindthe door
 
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