The best replacement for prepositions is adverbs.

The best alternatives to prepositions are rated as following:
★★★★★  adverbs
★★★  conjunctions
★★  particles
  prepositional phrases

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Speaking about prepositions, one probably shouldn't forget about verbs.

Other search terms related to prepositions and their ratings are:
★★★★★ verbs
★★ adjectives
★★ examples
★★ estar
★★ gerunds
★ infinitives spanish
★ infinitive french
★ geographical names
★ pictures worksheets
sentences
dative
countries french
verbs spanish
You have in mind a companion for prepositions and it is not yet here? Propose!



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prepositions
adverbs
conjunctions