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.

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

Do you know when to use the prepositions 'in' 'on' 'by' and 'with'? Take our English quiz on prepositions... The good old Wren and Martin describes the preposition as "a word used with a noun or a ...

Learn the most common preposition errors English learners make! Improve your English grammar and speak like a native.

Connect to or connect with? On television or in television? Admit someone to hospital or in hospital? What is the difference between ‘old for his years’ and ‘old in years’? Which is correct: try ...

WEST LAFAYETTE, Ind. – Parts of the human brain think about the same word differently, at least when it comes to prepositions, according to new language research in stroke patients conducted by ...

AN English teacher in Iran, Farhad H., recently sent me e-mail asking this very interesting question about preposition usage: “I often have difficulty when it comes to the difference between the ...

A preposition is a word that tells you where or when something is in relation to something else. Examples of prepositions include words like 'after', 'before', 'on', 'under', 'inside' and 'outside'.