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.

The prepositions 'in', 'on' and 'at' can be useful when we're talking about time and location. Read on to learn more about when to use them. We use ‘at’ when we’re talking about a very specific period ...

Prepositions are words that usually go before a noun or a pronoun. They express things like: Often they aren't easy to translate, but even when there's a translation, it doesn't always apply, because ...

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 ...

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 ...