NORDINVERSITY
1st Bac Grammar Reference

Grammar: Conditionals: Zero, First, & Second

Conditional sentences are made of two clauses: an if-clause (the condition) and a main clause (the result).

Zero Conditional (General Truths)

Use: To talk about facts, scientific laws, and situations that are always true. Form: `If + Present Simple, ... Present Simple.` Example: "If you heat water to 100 degrees, it boils ."

First Conditional (Real Future Possibility)

Use: To talk about a real and possible situation in the future. Form: `If + Present Simple, ... will + base verb.` Example: "If it rains tomorrow, we will stay at home."

Second Conditional (Hypothetical/Unreal Present or Future)

Use: To talk about imaginary, hypothetical, or unlikely situations. Also used for giving advice. Form: `If + Past Simple, ... would + base verb.` Note: With the verb 'to be', 'were' is often used for all subjects (e.g., If I were you...). Example: "If I won the lottery, I would buy a big house." (Unlikely situation) Example: "If I were you, I would tell the truth." (Advice)

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