Zero Conditional Sentences are an essential part of English grammar, especially for learners who want to talk about facts, rules, and everyday truths.
In this post, 100 Zero Conditional Sentences in English, you’ll find clear, practical examples that show how we use the present simple tense to describe situations that are always true.
These sentences are commonly used in daily conversations, classroom instructions, science facts, and general statements.
Whether you’re a student, teacher, or self-learner, this list will help you understand the structure, improve accuracy, and use Zero Conditionals confidently in spoken and written English.
✅ Structure:
If + Present Simple, Present Simple
Example: If you heat ice, it melts.
🔹 100 Zero Conditional Sentences
Nature & Science
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If you heat ice, it melts.
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If it rains, the ground gets wet.
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If you don’t water plants, they die.
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If the sun sets, it gets dark.
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If the temperature falls below 0°C, water freezes.
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If you drop something, it falls.
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If you touch fire, it burns.
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If the wind blows hard, trees shake.
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If the moon comes out, the night looks bright.
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If you boil water, it turns into steam.
Daily Life
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If you don’t eat, you feel hungry.
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If you don’t sleep, you feel tired.
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If you brush your teeth, your mouth feels fresh.
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If you mix red and blue, you get purple.
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If you don’t exercise, you gain weight.
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If you smile, people feel happy.
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If you press the switch, the light turns on.
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If you open the fridge, the light comes on.
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If you cook rice, it becomes soft.
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If you wash clothes, they get clean.
Rules & Habits
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If students study, they pass exams.
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If you break the law, you get punished.
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If you park here, you pay a fine.
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If people work hard, they succeed.
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If children misbehave, teachers scold them.
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If you come late, you miss the bus.
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If you save money, you become rich.
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If you eat too much, you feel sick.
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If people smoke, they harm their lungs.
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If you practice daily, you improve.
Technology
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If you press the power button, the computer starts.
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If you click this icon, the program opens.
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If the battery dies, the phone turns off.
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If you type fast, you finish quickly.
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If you connect to Wi-Fi, you can browse.
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If the internet goes down, websites don’t load.
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If you don’t charge your laptop, it stops working.
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If you press “send,” the email goes.
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If you update apps, they run better.
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If you forget your password, you can’t log in.
Health
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If you drink water, you stay hydrated.
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If you eat fruits, you get vitamins.
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If you rest, you feel better.
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If you eat junk food, you gain weight.
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If you exercise, you stay fit.
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If you eat too much sugar, your teeth decay.
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If you run fast, your heart beats quickly.
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If you don’t wash your hands, you get sick.
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If you drink milk, you get calcium.
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If you play sports, you stay strong.
Emotions
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If you help others, you feel happy.
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If people praise you, you feel proud.
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If children get toys, they feel excited.
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If someone insults you, you feel bad.
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If you lose something, you feel sad.
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If babies are hungry, they cry.
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If people are nervous, they sweat.
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If you listen to music, you relax.
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If kids watch cartoons, they laugh.
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If people meditate, they feel calm.
Work & Study
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If employees work well, companies grow.
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If you miss deadlines, you get in trouble.
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If students don’t study, they fail exams.
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If teachers explain clearly, students understand.
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If you attend classes, you learn more.
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If you read books, you gain knowledge.
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If you don’t revise, you forget.
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If you practice English, you improve.
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If workers strike, work stops.
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If you arrive late, the meeting starts without you.
Travel & Transport
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If you miss the train, you wait for the next one.
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If you drive fast, you risk accidents.
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If the light turns red, cars stop.
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If you wear a seatbelt, you stay safe.
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If you take a taxi, you pay money.
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If it snows, roads become slippery.
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If you walk too far, you get tired.
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If you book early, you get cheap tickets.
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If planes take off late, flights get delayed.
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If you don’t have a ticket, you can’t travel.
Food & Drinks
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If you add sugar, tea tastes sweet.
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If you don’t add salt, food tastes bland.
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If you fry potatoes, they become crispy.
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If you freeze water, it becomes ice.
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If you eat spicy food, you drink water.
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If you eat ice cream, it melts in your mouth.
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If you keep milk outside, it spoils.
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If you cut onions, your eyes water.
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If you eat slowly, digestion improves.
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If you bake a cake, it rises.
General Truths
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If you mix water and oil, they don’t mix.
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If you drop glass, it breaks.
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If you stretch a rubber band, it expands.
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If you hit metal, it makes noise.
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If people see lightning, they hear thunder.
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If the earth rotates, we get day and night.
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If the seasons change, weather changes.
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If you open a window, fresh air comes in.
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If you switch off the fan, it stops.
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If cats see mice, they chase them.
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