NARRATOR: Oh, you’re Golem, you’re going to help us with prepositions? Okay. A preposition is a word that tells you where or when something is in relation to something else. Words like ‘afte ...

à + le → au à la à l’ à + les → aux ...

Or so the legend goes. Churchill probably wasn’t involved in the exchange: The earliest known reference to it doesn’t mention ...

I think we can all agree on the reasons the accident occurred. In number 1 above, and as if to make things confusing beyond reason, the correct idiomatic English is neither of these prepositions!