Prepositions are short words that usually stand in front of nouns to show a relation to them. English learners find prepositions difficult. These 10 rules will help clear your confusions. Download ...

Do you always get confused between in, on, and at? You’re not alone! In this lesson, Claire breaks down English prepositions ...

NPR's Ari Shapiro speaks with John McWhorter, Columbia University linguist and New York Times columnist about the recent Merriam-Webster declaration that English sentences may end with prepositions.

Each item below offers a choice, in a pull-down menu, of four prepositions for expressing various logical relationships. For each numbered item, select the preposition that best fits in the sentence.