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CEFR A2Recommended grades: 7–9

Zero Conditional

01 · Quick explanation

Use the Zero Conditional for facts that are always true: If you heat ice, it melts.

02 · Full explanation

The Zero Conditional describes general truths, scientific facts, and habits/routines: things that are always or usually true. Form: If + Present Simple, Present Simple. If or when can both be used because the result always follows the condition. Example: If you mix blue and yellow, you get green. When water freezes, it turns into ice.

Scientific factsGeneral truthsHabits and routinesInstructions and rules

03 · Formula

+If/When + Present Simple, + Present Simple
−If + do/does not + V, + do/does not + V
?What happens if + S + V?

04 · Affirmative

+ If/When + Present Simple, + Present Simple

  • If you heat water to 100°C, it boils.
  • When the sun sets, the sky turns orange.

05 · Negative

− If + do/does not + V, + do/does not + V

  • If you don't water plants, they don't grow.
  • If people don't sleep enough, they don't feel well.

06 · Question

? What happens if + S + V?

  • What happens if you mix red and white paint?
  • Does the alarm ring if someone opens the door?

07 · Examples

  • ENIf you heat ice, it melts.

    KZМұзды қыздырсаң, ол ериді.

    RUЕсли нагреть лёд, он тает.

  • ENWater boils if you heat it to 100 degrees.

    KZСуды 100 градусқа дейін қыздырсаң, ол қайнайды.

    RUВода кипит, если её нагреть до 100 градусов.

  • ENIf children eat too much sugar, they get energetic.

    KZБалалар тым көп қант жесе, олар энергиялы болады.

    RUЕсли дети едят слишком много сахара, они становятся энергичными.

  • ENPlants die if they don't get water.

    KZСу ішпесе, өсімдіктер қурап қалады.

    RUРастения погибают, если им не хватает воды.

  • ENWhen you press this button, the light turns on.

    KZОсы түймені бассаң, жарық жанады.

    RUКогда нажимаешь эту кнопку, свет включается.

  • ENIf it rains, the ground gets wet.

    KZЖаңбыр жауса, жер дымқыл болады.

    RUЕсли идёт дождь, земля становится мокрой.

  • ENPeople feel tired if they don't sleep enough.

    KZАдамдар жеткілікті ұйықтамаса, шаршайды.

    RUЛюди чувствуют усталость, если недостаточно спят.

  • ENIf you mix blue and yellow, you get green.

    KZКөк пен сарыны араластырсаң, жасыл түс шығады.

    RUЕсли смешать синий и жёлтый, получится зелёный.

  • ENThe alarm rings if someone opens the door.

    KZБіреу есікті ашса, дабыл шырылдайды.

    RUСигнализация звонит, если кто-то открывает дверь.

  • ENIf metals get hot, they expand.

    KZМеталдар қызса, олар ұлғаяды.

    RUЕсли металлы нагреваются, они расширяются.

08 · Signal words

ifwhenalwaysevery timegeneral fact

09 · Common mistakes

  • ✗ If you heat ice, it will melt.

    ✓ If you heat ice, it melts.

    General truths use Present Simple in both clauses, not will.

  • ✗ If water freeze, it turns into ice.

    ✓ If water freezes, it turns into ice.

    Third person singular needs -s: freezes.

  • ✗ Plants don't grow if they don't got water.

    ✓ Plants don't grow if they don't get water.

    Use the base form after don't: get, not got.

10 · Compare with similar grammar

Zero Conditional vs First Conditional

Zero Conditional states a general fact that is always true (If you heat water, it boils). First Conditional talks about a specific, possible future situation (If it rains tomorrow, I will stay home).

If you heat ice, it melts. (always true)

If it rains tomorrow, I will stay home. (one future possibility)

If you mix red and blue, you get purple. (fact)

If I have time, I will call you. (future plan)

11 · Interactive exercises

Answer each task and press Check. Type answers in English.

0 / 10 · 0 checked

  1. 1. Choose the correct answer:

    If you heat water to 100°C, it ___.

  2. 2. Choose the correct answer:

    Ice ___ if you heat it.

  3. 3. Choose the correct answer:

    If people ___ enough water, they feel thirsty.

  4. 4. Choose the correct answer:

    When the sun ___, the sky turns dark.

  5. 5. Fill in the gap:

    If you ___ (mix) red and yellow, you get orange.

  6. 6. Fill in the gap:

    Plants ___ (die) if they don't get sunlight.

  7. 7. Fill in the gap:

    If metal ___ (heat), it expands.

  8. 8. Fill in the gap:

    The light turns on if you ___ (press) this button.

  9. 9. Correct the sentence:

    If you touch fire, you will get burned.

  10. 10. Correct the sentence:

    Water turn to ice if it gets very cold.

12 · Mini test

Question 1 / 5

Which sentence is correct?

13 · Practice

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