Zero Conditional and First Conditional: Rules, Examples and BAC-Style Exercises — 1st Year Secondary — English — Algerian Curriculum

Zero Conditional and First Conditional: Rules, Examples and BAC-Style Exercises — 1st Year Secondary — English

Learning Objectives

• Understand the structure of Zero Conditional and First Conditional
• Distinguish between Zero and First Conditional
• Use conditionals correctly in speaking and writing

1. Zero Conditional (General Truths)

The Zero Conditional is used for facts, general truths, and habits. It describes situations that are always true.

Structure: If + Present Simple, Present Simple

Examples:

• If you heat water to 100°C, it boils.
• If it rains, the grass gets wet.
• If I feel tired, I drink coffee.

2. First Conditional (Real Future Possibilities)

The First Conditional is used for possible future situations and their likely results.

Structure: If + Present Simple, will + base verb

Examples:

• If you study hard, you will pass the exam.
• If it rains tomorrow, I will stay at home.
• If she calls me, I will tell her the news.

Key Differences

	Zero Conditional	First Conditional
Usage	General truth / habit	Possible future situation
If clause	Present Simple	Present Simple
Main clause	Present Simple	will + base verb
Example	If you freeze water, it turns into ice.	If you study, you will succeed.

BAC-Style Exercises

Exercise 1: Complete the sentences

1. If you ________ (mix) red and blue, you ________ (get) purple.
2. If she ________ (arrive) early, we ________ (wait) for her.
3. If I ________ (not sleep) well, I ________ (feel) tired the next day.
4. If he ________ (work) hard, he ________ (earn) a lot of money.

Answers:

1. mix / get
2. arrives / will wait
3. don’t sleep / feel
4. works / will earn

Exercise 2: Choose the correct form

1. If you heat ice, it (will melt / melts).
2. If we hurry, we (catch / will catch) the bus.
3. If I don’t eat breakfast, I (am / will be) hungry later.
4. If you touch fire, you (burn / will burn) yourself.

Answers:

1. melts (Zero Conditional – general truth)
2. will catch (First Conditional – future possibility)
3. will be (First Conditional)
4. burn (Zero Conditional – general truth)

Similar Lessons

• Present Simple vs Present Continuous
• Simple Past vs Past Continuous