Learn “Have to” and “Don’t Have to” (A2 English Grammar)

Raúl Maguiña

Fundador da Langcom | Examinador dos exames de Cambridge e SIELE

julho 17, 2026

A2✏️ Gramática⏱️ 5 min de leitura
Have to shows that something is necessary or an obligation, often because of a rule or situation. For example, I have to work today means working is necessary for me. It is similar to must, but have to often refers to external rules or duties. On the other hand, don’t have to means something is NOT necessary or NOT an obligation. For instance, You don’t have to come if you’re busy means there is no obligation to come. It’s important not to confuse don’t have to with must not. Don’t have to means “it’s not necessary,” while must not means “it’s forbidden” or “it’s not allowed.” This grammar point helps you talk about rules, duties, and choices in daily life.

What Does Have to Mean?

Have to shows that something is necessary.

  • It means you must do something because of a rule, a law, or a situation.
  • The obligation often comes from outside you, not from your personal feeling.
  • Exemplo: Students have to wear a uniform at this school. (This is a school rule.)
  • Exemplo: I have to go to the bank. It closes soon. (The situation makes it necessary.)

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How Do We Use Have to?

Utilizamos have to with all subjects.

  • Remember to change have to has for he, she, e it.
  • The verb after have to is always in the base form (infinitive without to).
  • I / You / We / They + have to + verb
  • He / She / It + has to + verb

What Does Don’t Have to Mean?

Don’t have to shows that something is NOT necessary.

  • It means you are free to do it or not do it. There is no obligation.
  • Exemplo: You don’t have to pay for this. It’s free. (Paying is not necessary.)
  • Exemplo: She doesn’t have to work on Sundays. (She has no obligation to work on Sundays.)

How Do We Use Don’t Have to?

Utilizamos do not have to (or don’t have to) for I, you, we, they.

  • Utilizamos does not have to (or doesn’t have to) for he, she, it.
  • The verb after have to is always in the base form.
  • I / You / We / They + don’t have to + verb
  • He / She / It + doesn’t have to + verb

How Do We Ask Questions with Have to?

To ask a question, we use do ou does at the beginning of the sentence.

  • Remember to use have to (not has to) for all subjects in questions.
  • Do + I / you / we / they + have to + verb?
  • Does + he / she / it + have to + verb?
  • Exemplo: Do you have to wear a uniform?
  • Exemplo: Does he have to study for the exam?
Conjugation of <span data-no-translation>Have to</span> e <span data-no-translation>Don't Have to</span>
Subject Positive Negative Question
I / You / We / They have to work don’t have to work Do I have to work?
He / She / It has to work doesn’t have to work Does he have to work?

Exemplos

  • I have to wake up early tomorrow.
  • She has to finish her homework before dinner.
  • We don’t have to work on holidays.
  • He doesn’t have to cook tonight; we’re eating out.
  • Do you have to travel for your job?
  • Does she have to learn English for her new role?
  • They have to follow the safety rules.
  • You don’t have to apologize; it’s okay.

Prática

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Erros comuns entre falantes de espanhol

  • Using must not instead of don’t have to: Many Spanish speakers confuse “no es necesario” with “no está permitido.”
    • Incorreto: You must not work today. (This means it’s forbidden to work.)
    • Correto: You don’t have to work today. (This means working is not necessary.)
  • Forgetting to: Remember that have is followed by to.
    • Incorreto: I have go now.
    • Correto: I have to go now.
  • Incorrect conjugation for he/she/it: Using have to instead of has to in positive sentences, or don’t have to instead of doesn’t have to.
    • Incorreto: She have to study.
    • Correto: She has to study.
    • Incorreto: He don’t have to wait.
    • Correto: He doesn’t have to wait.
  • Using has to in questions: Questions with do/does always use have to.
    • Incorreto: Does she has to work?
    • Correto: Does she have to work?

Perguntas frequentes

What is the main difference between have to e must?

For A2, remember that have to often describes obligations from external rules or situations (e.g., I have to wear a uniform). Must can be used for strong personal obligations (e.g., I must call my mother) or for strong recommendations.

Can I use got to instead of have to?

Yes, in informal spoken English, got to (often shortened to gotta) is common. For example, I’ve got to go now means the same as I have to go now. However, have to is better for formal writing.

Does don’t have to mean the same as must not?

No, they are very different! Don’t have to means “it is not necessary” (e.g., You don’t have to pay). Must not means “it is forbidden” or “it is not allowed” (e.g., You must not smoke here).

Sobre o autor: Raúl Maguiña

Raúl Maguiña é diretor da Asociación Educativa Langcom, um centro autorizado de preparação para o Cambridge English em EUA. Com mais de uma década de experiência no ensino de idiomas e em certificações internacionais, ele já ajudou milhares de alunos, professores e instituições de ensino em 25 países a obter as certificações de inglês da Cambridge, IELTS, TOEFL e Michigan.

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