Diferencias entre "needn't" y "don't have to" en inglés británico y americano

Si aún no conoces tu nivel de inglés, ve a nuestro Test de Inglés de Platzi y descúbrelo. 🚀

---

In English, we use different expressions to talk about things that are not necessary or obligatory. Here are two common ways to express absence of obligation:

Needn't: This is a contraction of "need not." It means there is no obligation or necessity to do something. It is most commonly used in more formal or written British English.

• You needn't bring your own laptop; we provide one for you. 
• They needn't to report that situation to me.

When we use needn’t, we don’t write to afterwards.

Don't/Doesn't Have to: This phrase is more common in everyday spoken English, especially in American contexts. It expresses that something is not necessary or required, in other words it’s optional. It also provides a sense of advice or suggestion rather than just lack of obligation.

• Employees don't have to work overtime unless it's necessary.
• Tell her that she doesn’t have to join. It’s optional.

Third person (she,he, it) uses doesn’t.