or

A coordinating conjunction used to connect two or more alternatives, possibilities, or choices. It presents an option or a substitution between words, phrases, or clauses. It can also indicate an approximation or uncertainty.

• 🇵🇹Conjunção usada para indicar escolha, alternativa ou substituição entre duas ou mais palavras, frases ou orações. Também pode expressar aproximação ou incerteza.

1. Choice or alternative between options A1 informal

   Used to present a choice between two or more possibilities, often in statements, questions, or commands. It implies that only one of the options may be selected or true.

   • Would you like tea or coffee?
   • You can pay by card or cash.
   • Is he coming today or tomorrow?
   • We can go to the cinema or stay home and watch a movie.
   • Do you want it now or later?

   🇵🇹Escolha ou alternativa

2. Approximation or uncertainty B1 informal

   Used between two numbers or amounts to indicate an approximate quantity, often when the speaker is unsure or does not need to be exact. Common in informal speech.

   • I'll be back in two or three minutes.
   • There were ten or twelve people at the meeting.
   • He's thirty or thirty-five years old.
   • It costs five or six dollars.
   • She lives an hour or so away from here.

   🇵🇹Aproximação ou incerteza

3. Otherwise / because if not B1 informal

   Used to warn or advise that something bad will happen if the first action is not taken. It connects two clauses where the second is a negative consequence of not doing the first.

   • Hurry up, or you'll miss the bus.
   • Study hard, or you will fail the exam.
   • Put on a jacket, or you'll catch a cold.
   • Leave now, or I'll call the police.
   • Eat your vegetables, or you won't get dessert.

   🇵🇹Senão / caso contrário

4. Explanation or rephrasing B2 formal

   Used to introduce a word or phrase that explains, rephrases, or corrects what was said before. Often interchangeable with 'in other words' or 'that is'.

   • Botany, or the study of plants, is a fascinating science.
   • He is a cardiologist, or a heart doctor.
   • The car needs a new alternator, or the part that charges the battery.
   • Her hobby is philately, or stamp collecting.
   • We need a proactive solution, or one that prevents problems before they start.

   🇵🇹Explicação ou reformulação