Express obligation, prohibition, and advice — British style! Os modais de obrigação são fundamentais para entender as regras sociais e legais do Reino Unido. Brits têm uma relação única com regras: elas são levadas a sério, mas frequentemente expressas de forma educada.
No British English, must e have to têm nuances diferentes: 'must' expressa obrigação pessoal, enquanto 'have to' expressa obrigação externa (lei, regra). E mustn't (proibição) é completamente diferente de don't have to (não há necessidade) — uma distinção crucial!
Must vs Have to
I must call my mum. (personal obligation)
You have to pay income tax. (law/rule)
I must visit the Lake District one day. (personal wish)
You have to queue here. (external rule)
Mustn't vs Don't Have To
You mustn't park on double yellow lines. (prohibition)
You don't have to wear a tie at this pub. (no obligation)
Passengers mustn't smoke on the platform. (forbidden)
You don't have to bring food — it's provided. (optional)
Should, Ought to, and Had Better
You should visit the British Museum — it's free!
You ought to try fish and chips by the seaside.
You'd better hurry or you'll miss the last Tube.
We should probably bring a brolly — it might rain.
Modais de Obrigação
The manager called a meeting. "From next week, there are new rules," he said. "You must wear your ID badge at all times. You have to complet...
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