A2 Grammar: Expressing Possibility with May and Might — A2 English grammar lesson by Langcom

A2 Grammar: Expressing Possibility with May and Might

Raúl Maguiña

Fundador de Langcom | Examinador de Cambridge y del SIELE

septiembre 10, 2026

A2✏️ Gramática⏱️ 5 minutos de lectura📅 Updated septiembre 2026
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May y might are modal verbs we use to talk about things that are possible in the present or future. They show that we are not 100% sure something will happen or is true. Think of them like saying “perhaps” or “it’s possible.” For example, if you say It may rain tomorrow, it means there is a possibility of rain, but it’s not definite. Similarly, She might be busy now means it’s possible she is busy, but we don’t know for sure. We always use the base form of the verb after may o might, como may go o might see. These verbs are very useful for expressing uncertainty in everyday conversations and in exams like the A2 Key. Mastering may y might will help you communicate more naturally about possibilities and plans that are not yet certain.

What do May and Might mean?

May y might are modal verbs. We use them to talk about things that are possible, but not certain.

They express a degree of uncertainty. This means you are not 100% sure if something is true or will happen.

  • It is similar to saying “perhaps” or “it is possible.”
  • You use them when you are guessing or making a prediction that is not definite.

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When do we use May and Might?

Utilizamos may y might to talk about possibilities in the present or the future.

  • For present possibilities: You think something is true right now, but you are not sure. For example, He may be at home now.
  • For future possibilities: You think something could happen later, but it's not a definite plan. For example, We might go to the beach this weekend.
  • You use them when you don't have complete or definite information.

How do we form sentences with May and Might?

The structure for sentences with may y might is very simple.

  • First, you need the subject (e.g., I, she, they).
  • Then, you add may o might.
  • Finally, you use the base form of the main verb (the infinitive without to).

Remember, you do not add -s to the main verb for he, she, o it.

Is there a difference between May and Might?

For expressing possibility, may y might are often very similar and interchangeable.

  • Many native speakers use them in the same way.
  • Sometimes, might can suggest a slightly smaller or less likely possibility than may. However, this difference is often very small and not always important, especially at A2 level.
  • You can generally use either may o might to express possibility without a significant change in meaning.

What about negative sentences?

To make negative sentences with may y might, you simply add not after the modal verb.

  • Uso may not for negative possibilities. For example, It may not rain this evening. (It's possible it won't rain.)
  • Uso might not for negative possibilities. For example, They might not come to the party. (It's possible they won't come.)
  • There are no common contractions for may not. While mightn't exists, might not is much more common, especially in spoken English.
Summary of May and Might Forms for Possibility
Form Positive Example Negative Example
May I may go to the party. I may not go to the party.
Might She might call later. She might not call later.

Ejemplos

  • I may visit my grandparents this weekend.
  • She might be busy right now.
  • It may not be sunny tomorrow.
  • They might not finish the project on time.
  • He may call you later.
  • We might see a movie tonight.
  • The train may be late.

Práctica

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Errores habituales de los hispanohablantes

Common Mistakes with May and Might

  • Uso de can for possibility: Many Spanish speakers incorrectly use can to express possibility, perhaps because of a similar use in Spanish. Remember, can is for ability.
    • Wrong: It can rain tomorrow. (This means it *has the ability* to rain.)
    • Right: It may rain tomorrow. o It might rain tomorrow.
  • Añadir to después de may o might: Modal verbs are followed directly by the base form of the verb.
    • Wrong: She might to go to the park.
    • Right: She might go to the park.
  • Añadir -s to the main verb for he/she/it: El verbo que viene después de may o might always stays in its base form.
    • Wrong: He may comes to the party.
    • Right: He may come to the party.

Preguntas más frecuentes

Can I use 'may' for permission?

Sí, may can also be used to ask for or give permission, for example, May I come in? o You may leave now. However, in this lesson, we are focusing on its use for possibility.

Are 'may' and 'might' formal or informal?

For expressing possibility, may y might are generally neutral in formality. You can use them in both casual and more formal situations. May can sound slightly more formal when used for permission.

How are 'may' and 'might' tested in the A2 Key exam?

En el examen A2 Key (KET), es posible que te encuentres con may y might in Part 5 (Multiple-choice cloze) or Part 6 (Open cloze) of the Reading and Writing paper. You may need to choose the correct modal verb to express possibility or complete a sentence that talks about an uncertain future event.

Is 'could' similar to 'may' and 'might' for possibility?

Sí, could can also express possibility, especially for future events, similar to may y might. Por ejemplo, It could rain later means it's possible it will rain. At A2, focus on mastering may y might first.

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Sobre el autor: Raúl Maguiña

Raúl Maguiña es el director de la Asociación Educativa Langcom, un centro autorizado de preparación para el examen Cambridge English en tu país. Con más de una década de experiencia en la enseñanza de idiomas y la certificación internacional, ha ayudado a miles de estudiantes, profesores e instituciones educativas de 25 países a conseguir las certificaciones de inglés de Cambridge, IELTS, TOEFL y Michigan.

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