Zero Conditional: Exercises & Printable Worksheets (with Answers)

Zero conditional is an important structure for talking about facts, general truths, and habits — situations where one thing always leads to another. It uses the present simple tense in both parts of the sentence and shows that the result is always true when the condition is met.

Our zero conditional worksheets help learners practice forming these sentences through fill-in-the-blank activities, matching exercises, and sentence-rewriting tasks. These activities make it easier to understand and use the zero conditional correctly in everyday English.

For a deeper understanding of conditionals, explore these study articles:

• Zero Conditional
• First Conditional
• Second Conditional
• Third Conditional
• Mixed Conditional

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Download Zero Conditional Worksheets PDF

Zero Conditional Exercises

Zero Conditional Exercise 1: Complete the Sentences

Complete each sentence using the Zero Conditional structure.

1. If you mix red and blue, ___________________________________.
2. If a dog sees a stranger, ___________________________________.
3. If students pay attention in class, ___________________________________.
4. If you don’t brush your teeth, ___________________________________.
5. If it gets cold, ___________________________________.
6. If you press this button, ___________________________________.
7. If people don’t wear seatbelts, ___________________________________.
8. If you leave bread outside, ___________________________________.
9. If cats see a mouse, ___________________________________.
10. If you don’t water a cactus, ___________________________________.

Answer (examples):

1. you get purple
2. it barks
3. they learn more
4. your teeth get cavities
5. it snows
6. the machine starts
7. they get injured
8. it gets moldy
9. they chase it
10. it survives for a long time

Zero Conditional Exercise 2: Find and Correct the Mistakes

Each sentence has a mistake. Rewrite it correctly.

1. If you will heat water, it boils. → ___________________________________
2. If people eats too much, they gets sick. → ___________________________________
3. If the sun set, it got dark. → ___________________________________
4. If you mixes yellow and blue, you get green. → ___________________________________
5. If you heat water to 100°C, it is boil. → ___________________________________
6. If you open a book, knowledge come out. → ___________________________________
7. If my sister not sleeps enough, she gets cranky. → ___________________________________
8. If ice melts, it turn into water. → ___________________________________
9. If the alarm ring, we wakes up. → ___________________________________
10. If you eats too fast, you feels sick. → ___________________________________

Answer:

1. If you heat water, it boils.
2. If people eat too much, they get sick.
3. If the sun sets, it gets dark.
4. If you mix yellow and blue, you get green.
5. If you heat water to 100°C, it boils.
6. If you open a book, knowledge comes out.
7. If my sister does not sleep enough, she gets cranky.
8. If ice melts, it turns into water.
9. If the alarm rings, we wake up.
10. If you eat too fast, you feel sick.

Zero Conditional Exercise 3: Match the Halves

Match the beginning of each sentence with the correct ending.

Answer: 1c, 2d, 3a, 4b, 5e

Zero Conditional Exercise 4: Choose the Correct Ending

Choose the correct ending to complete each sentence.

1. If you drop glass,
   a) it sings.
   b) it falls and breaks.
   c) it flies away.
2. If you drink coffee at night,
   a) you fall asleep faster.
   b) you stay awake longer.
   c) you get cold.
3. If cats see a bird,
   a) they run away.
   b) they chase it.
   c) they ignore it.
4. If you mix sugar with water,
   a) it freezes.
   b) it dissolves.
   c) it burns.
5. If a child cries,
   a) it rains.
   b) they are happy.
   c) something is wrong.

Answer: 1b, 2b, 3b, 4b, 5c

Zero Conditional Exercise 5: Correct the Word Order

1. you / touch / you / get burned / if / fire → ___________________________________
2. it / rains / you / wet / if / get → ___________________________________
3. see / if / they / a mouse / cats / chase / it → ___________________________________
4. eat / you / sick / too much / feel / if / you → ___________________________________
5. plants / die / water / you / if / them / don’t → ___________________________________

Answer:

1. If you touch fire, you get burned.
2. If it rains, you get wet.
3. If cats see a mouse, they chase it.
4. If you eat too much, you feel sick.
5. If you don’t water plants, they die.