In English, small but mighty words like "in," "on," "and," and "because" are essential for making our sentences clear and meaningful. Prepositions tell us the relationship between words, often ...

Prepositions describe the relationship of words in a sentence. We use prepositions of location such as 'in', 'at' and 'on' to show the position of objects in the sentence. We use 'at' for specific ...

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.

In each item below, the sentence contains a highlighted conjunction expressing a time relationship, followed by a preposition in parentheses. In the blank box under each item, rewrite the sentence ...

Australia is an island country, which means that it is surrounded by water. The coastline of Australia is over 30,000 kilometres long. In this lesson, you will test your understanding of prepositions ...

Why are they so difficult? Often they aren't easy to translate, but even when there's a translation, it doesn't always apply, because English prepositions have lots of meanings and uses.

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.