Zero Conditional Worksheets and Exercises

The zero conditional is used to talk about facts, general truths, and things that always happen. It’s an important structure for English learners because it helps describe real-life situations like science facts, habits, and rules. In this article, you’ll find easy and practical worksheets and exercises to help students practice zero conditional sentences with confidence. These activities are perfect for classroom use, self-study, or homework.

Zero Conditional Worksheets

Zero Conditional Exercises

✅ Exercise 1: Complete the Sentences (Zero Conditional)

Fill in the blanks with the correct form of the verbs in brackets.

1. If you ___ water to 100°C, it ___ . (heat / boil)

2. If people ___ too much sugar, they ___ weight. (eat / gain)

3. If it ___, the grass ___ . (rain / grow)

4. If you ___ plants, they ___ . (not water / die)

5. If you ___ ice, it ___ . (heat / melt)

6. If students ___ hard, they ___ good results. (study / get)

7. If cats ___ hungry, they ___ loudly. (be / meow)

8. If babies ___ tired, they ___ . (feel / cry)

9. If you ___ red and white, you ___ pink. (mix / get)

10. If you ___ the ball, the dog ___ it. (throw / catch)

✅ Exercise 2: Rewrite Using Zero Conditional

Rewrite the sentences using the correct zero conditional structure.

1. When people eat healthy food, they feel better.

2. When you don’t sleep well, you feel tired.

3. When water freezes, it becomes ice.

4. When you press this button, the computer starts.

5. When babies are hungry, they cry.

6. When students listen carefully, they understand more.

7. When dogs are scared, they bark.

8. When you don’t water plants, they die.

9. When you heat chocolate, it melts.

10. When it rains a lot, the streets get wet.

✅ Exercise 3: Choose the Correct Verb Form

Complete each sentence with the correct present simple form.

1. If you (touch) a fire, it (burn) you.

2. If parents (not wake) their children, they (be) late for school.

3. If people (not drink) water, they (feel) sick.

4. If you (drop) glass, it (break).

5. If children (eat) too many sweets, they (get) toothaches.

6. If you (mix) yellow and blue, you (make) green.

7. If a dog (see) a stranger, it (bark).

8. If you (not exercise), your body (get) weak.

9. If it (snow), the ground (turn) white.

10. If birds (be) hungry, they (look) for food.

✅ Exercise 4: Match the Halves (Zero Conditional)

Match A with B to form correct zero conditional sentences.

A

1. If you don’t eat breakfast,

2. If metal gets hot,

3. If it rains,

4. If cats are angry,

5. If you freeze water,

6. If students arrive late,

7. If you leave milk out,

8. If you heat oil,

9. If people don’t sleep enough,

10. If you press the power button,

B
a. it turns to ice.
b. they feel tired.
c. the food smells bad.
d. it expands.
e. the class starts without them.
f. it boils.
g. the ground gets wet.
h. you feel hungry later.
i. they hiss.
j. the TV turns on.

______________________________________________________________

Answer Key:

Answer Key – Exercise 1

(Complete the sentences with the correct verbs)

1. If you heat water to 100°C, it boils.

2. If people eat too much sugar, they gain weight.

3. If it rains, the grass grows.

4. If you don’t water plants, they die.

5. If you heat ice, it melts.

6. If students study hard, they get good results.

7. If cats are hungry, they meow loudly.

8. If babies feel tired, they cry.

9. If you mix red and white, you get pink.

10. If you throw the ball, the dog catches it.

Answer Key – Exercise 2

(Rewrite using Zero Conditional)

1. If people eat healthy food, they feel better.

2. If you don’t sleep well, you feel tired.

3. If water freezes, it becomes ice.

4. If you press this button, the computer starts.

5. If babies are hungry, they cry.

6. If students listen carefully, they understand more.

7. If dogs are scared, they bark.

8. If you don’t water plants, they die.

9. If you heat chocolate, it melts.

10. If it rains a lot, the streets get wet.

Answer Key – Exercise 3

1. If you touch a fire, it burns you.

2. If parents don’t wake their children, they are late for school.

3. If people don’t drink water, they feel sick.

4. If you drop glass, it breaks.

5. If children eat too many sweets, they get toothaches.

6. If you mix yellow and blue, you make green.

7. If a dog sees a stranger, it barks.

8. If you don’t exercise, your body gets weak.

9. If it snows, the ground turns white.

10. If birds are hungry, they look for food.

Answer Key – Exercise 4

1. If you don’t eat breakfast, → h. you feel hungry later.

2. If metal gets hot, → d. it expands.

3. If it rains, → g. the ground gets wet.

4. If cats are angry, → i. they hiss.

5. If you freeze water, → a. it turns to ice.

6. If students arrive late, → e. the class starts without them.

7. If you leave milk out, → c. the food smells bad.

8. If you heat oil, → f. it boils.

9. If people don’t sleep enough, → b. they feel tired.

10. If you press the power button, → j. the TV turns on.