PREPOSITIONS:

 

  A preposition describes a relationship between other words in a sentence. In itself, a word like "in" or "after" is rather meaningless and hard to define in mere words. For instance, when you do try to define a preposition like "in" or "between" or "on," you invariably use your hands to show how something is situated in relationship to something else. Prepositions are nearly always combined with other words in structures called prepositional phrases. Prepositional phrases can be made up of a million different words, but they tend to be built the same: a preposition followed by a determiner and an adjective or two, followed by a pronoun or noun (called the object of the preposition). This whole phrase, in turn, takes on a modifying role, acting as an adjective or an adverb, locating something in time and space, modifying a noun, or telling when or where or under what conditions something happened.

For more information: https://grammar.ccc.commnet.edu/grammar/prepositions.htm

 

    There are about 150 prepositions in English. Yet this is a very small number when you think of the thousands of other words (nouns, verbs etc). Prepositions are important words. We use individual prepositions more frequently than other individual words. In fact, the prepositions of, to and in are among the ten most frequent words in English. Here is a short list of 70 of the more common one-word prepositions. Many of these prepositions have more than one meaning. Please refer to a dictionary for precise meaning and usage.

  1. aboard
  2. about
  3. above
  4. across
  5. after
  6. against
  7. along
  8. amid
  9. among
  10. anti
  11. around
  12. as
  13. at
  14. before
  15. behind
  16. below
  17. beneath
  18. beside
  19. besides
  20. between
  21. beyond
  22. but
  23. by
  24. concerning
  25. considering
  26. despite
  27. down
  28. during
  29. except
  30. excepting
  31. excluding
  32. following
  33. for
  34. from
  35. in
  36. inside
  37. into
  38. like
  39. minus
  40. near
  41. of
  42. off
  43. on
  44. onto
  45. opposite
  46. outside
  47. over
  48. past
  49. per
  50. plus
  51. regarding
  52. round
  53. save
  54. since
  55. than
  56. through
  57. to
  58. toward
  59. towards
  60. under
  61. underneath
  62. unlike
  63. until
  64. up
  65. upon
  66. versus
  67. via
  68. with
  69. within
  70. without