C1 English Grammar – Conditionals – Ex 51

What Are Conditionals?

Conditionals are sentences with an “if” clause (the condition) and a main clause (the result). They show what happens, will happen, or would have happened if something else occurs or occurred.

The Five Conditional Types

• Zero Conditional: General truths — “If you heat ice, it melts.” (present + present)
• First Conditional: Real future possibility — “If it rains, we will cancel the picnic.” (present + will)
• Second Conditional: Unreal present/future — “If I won the lottery, I would travel.” (past simple + would)
• Third Conditional: Unreal past — “If she had studied, she would have passed.” (past perfect + would have + past participle)
• Mixed Conditionals: Unreal past condition → present result, or vice versa — “If I had practiced, I would be better now.”

Common C1-Level Errors

• Using “would” in the if clause: ❌ “If I would have known…” → ✅ “If I had known…”
• Confusing Second and Third: “If I would go” → should be “If I went”
• Overusing “if” when “unless” is clearer: “Unless you study, you’ll fail” = “If you don’t study, you’ll fail.”
• Using “was” instead of “were” in formal Second Conditional: “If I were you…” (not “was”)

Conditional Types:

correct “If I had known, I would have helped.”
incorrect “If I would have known, I would have helped.” — never use “would” in the if clause

How This Quiz Works

• 20 questions randomly selected from a pool of 50
• Tests all conditional types, including mixed and inverted forms
• Hints guide you without giving away the answer
• Immediate feedback: correct or incorrect, with clear explanations
• Click “Check Answers” to view the full answer key
• “Change Questions” gives you a new quiz