Learn French: Où est-ce qu'il faut s'arrêter ?

Il faut is a special fixed expression meaning "it is necessary" or "you have to". The il here does not refer to a specific person like "he", much like the "it" in the English phrase "it is raining". Because it does not specify exactly who needs to do the action, it is often translated as "we must", "you must", or "one must" depending on the context.

Why do we add est-ce qu' after où?

Est-ce que is a very common tool used to build questions in French. When you start a question with a question word like où (where), you can place est-ce que right after it. This lets you keep the rest of the sentence in its normal, everyday order (il faut s'arrêter). The que changes to qu' because the next word (il) starts with a vowel.

Why is the verb s'arrêter and not just arrêter?

In French, the action of stopping yourself, like pulling over in a car or pausing on a walk, uses the reflexive verb s'arrêter (literally "to stop oneself"). If you just say arrêter, it usually means you are stopping something or someone else, like stopping a machine or a timer.

What does the s' stand for in s'arrêter?