English Grammar Lab

← A1

Do not and does not

You will be able to Make negative present-simple sentences.

Explanation

Use do not or don't with I, you, we and they. Use does not or doesn't with he, she and it.

Examples

Detailed course

Understand the grammar point

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Detailed explanation

This lesson focuses on do not and does not. The structure helps learners share basic information, and it should always be interpreted as part of a complete message rather than as an isolated formula. Before selecting a form, identify the subject, time reference, clause relationship, and the information that receives emphasis.

Formation is central. Use do not or don’t after I, you, we, and they, and does not or doesn’t after he, she, it, or a singular noun. Use the base verb after do or does. Build the sentence in stages: identify the grammatical subject, choose the auxiliary or main verb form, and complete the clause in normal English word order. In negatives and questions, check whether the structure supplies its own auxiliary or requires another one.

The pattern can help users describe a simple situation, form clear statements and questions, and notice subject and verb agreement. These purposes may overlap, so context decides which interpretation is natural. Time expressions, determiners, linking words, and punctuation often provide evidence for the correct choice.

A useful contrast prevents overgeneralisation. Be forms negatives with am not, is not, or are not instead of do not or does not. Ask how the nearest alternative would change time, certainty, focus, politeness, or register. A grammatically possible sentence may still communicate the wrong relationship if that contrast is ignored.

The guided examples are complete messages. Notice how the target structure agrees with its subject and how the surrounding vocabulary makes the intended meaning clear. When producing a new example, preserve the relationship between form and meaning while changing the people, place, and lexical details.

A reliable self-check is to paraphrase the sentence in simpler language. If the paraphrase changes the time relationship, degree of certainty, or focus, review the original form. Compare the sentence with the common mistakes and explain why the corrected version is preferable.

How to form it

Use do not or don’t after I, you, we, and they, and does not or doesn’t after he, she, it, or a singular noun. Use the base verb after do or does.

Use the structure to share basic information.

Use the structure to describe a simple situation.

Use the structure to form clear statements and questions.

Use the structure to notice subject and verb agreement.

Be forms negatives with am not, is not, or are not instead of do not or does not.

Guided examples

I do not check my phone during lessons.

I takes do not, and the main verb check stays in its base form.

Maya does not travel to school by bus.

Maya is singular, so the sentence uses does not, not do not.

We don’t eat lunch in the classroom.

We takes don’t, the contracted form of do not.

The sports club doesn’t open on Mondays.

Club is a singular subject, so the sentence uses doesn’t, not don’t.

They do not finish classes at the same time.

They takes do not, and finish stays uninflected.

My brother doesn’t watch television before homework.

Brother is singular, so doesn’t is used, and watch loses its -s.

Common mistakes

Not: I does not check my phone during lessons.

Use: I do not check my phone during lessons.

I always takes do not; does not is only for he, she, it and singular nouns.

Not: Maya do not travel to school by bus.

Use: Maya does not travel to school by bus.

Maya is a singular subject like she, so the sentence needs does not, not do not.

Not: We doesn’t eat lunch in the classroom.

Use: We don’t eat lunch in the classroom.

We is plural and always takes don’t, never doesn’t.

Not: The sports club doesn’t opens on Mondays.

Use: The sports club doesn’t open on Mondays.

After doesn’t, the main verb stays in its base form: open, not opens.

Before you practise

  • Identify the communicative purpose.
  • Check the subject and required verb or auxiliary.
  • Confirm the time reference and clause order.
  • Compare the sentence with the nearest alternative.
  • Read the complete sentence and verify the meaning.

Reading text

A Quiet Exam Morning

About 140 words

Maya, her sister, and the school monitor are in the classroom corridor. They need to prepare calmly for a short exam. Some students are nervous and the corridor is noisy. I do not listen to loud music before exams. Someone points to phones, bags, and exam cards. She does not drink coffee in the morning. The first answer is short, so everyone can follow it. They do not open games on their phones. One detail is still unclear. The monitor does not let bags block the door. They check the materials slowly. Soon the result is clear: the work is finished. The morning feels easier because the small task is finished. Maya, her sister, and the school monitor look at phones, bags, and exam cards again before they move on. One helper writes the next step on a small card.

Reading comprehension

  1. Who is involved in the reading?

    Show answer

    Maya, her sister, and the school monitor

  2. Where does the reading take place?

    Show answer

    the classroom corridor

  3. What task are the people trying to complete?

    Show answer

    prepare calmly for a short exam

  4. What problem makes the task less simple?

    Show answer

    some students are nervous and the corridor is noisy

Grammar in the text

  1. I do not listen to loud music before exams.

    I takes do not, with the base verb listen.

  2. She does not drink coffee in the morning.

    She is singular, so the sentence uses does not.

  3. They do not open games on their phones.

    They is plural, so the sentence uses do not.

  4. The monitor does not let bags block the door.

    Monitor is a singular subject, so does not is used.

Key point

Use this pattern when the meaning needs it in the reading: subject + do/does not + base verb. In short, do not and does not make present-simple actions negative. Example: "I do not listen to loud music before exams."

Practice

  1. Complete the sentence from the same situation: "I ____ listen to loud music before exams."

    Show answer

    I do not listen to loud music before exams.

  2. Complete the sentence from the same situation: "She ____ drink coffee in the morning."

    Show answer

    She does not drink coffee in the morning.

  3. Complete the sentence from the same situation: "They ____ open games on their phones."

    Show answer

    They do not open games on their phones.

  4. Complete the sentence from the same situation: "The monitor ____ let bags block the door."

    Show answer

    The monitor does not let bags block the door.

Listening practice

Watch a TEDx talk

“10 ways to have a better conversation” — Celeste Headlee (TED). Listen for clear, natural English and pick up new vocabulary while you review this grammar point.

Check your understanding

Which of these is one of Celeste Headlee's rules for a better conversation?

Check your understanding

What does Headlee say is the single most important skill for having a good conversation?

Practice

Choose the correct answer. I ___ coffee.

Practice

Choose the correct answer. He ___ television in the morning.

Practice

Choose the correct answer. We ___ on Sundays.

Written practice

Produce the answer yourself. Capitalisation and final punctuation do not affect validation, but the grammar and word order must be correct.

Grammar transformation

Written practice

Rewrite the sentence in the negative.

She eats meat.