Zero Conditional Exercises PDFSet 2: Negatives, "When" & "Unless"
20 questions·12 min·Answers included·Explanations included
Preview: Questions
Fill in the blank with the correct option.
1.If you ___ water plants regularly, they die.
a) don'tb) doesn'tc) won'td) aren't
2.___ you press this button, the machine starts.
a) Whileb) Whenc) Untild) Before
3.The engine ___ start if you don't put fuel in it.
a) don'tb) won'tc) doesn'td) isn't
4.___ you eat too much sugar, you gain weight.
a) Unlessb) Althoughc) Untild) If
5.Unless you ___ sun cream, you get sunburnt.
a) don't wearb) wearc) wored) will wear
... and 15 more questions in the PDF
Preview: Answers
1.don't
2.When
3.doesn't
4.If
5.wear
... and 15 more answers in the PDF
Preview: Explanations
1."don't"(a)
'You' requires 'don't' for negation. 'If you don't water plants' = a general truth about plant care.
2."When"(b)
In zero conditionals, 'when' and 'if' are interchangeable because the result always happens. 'When you press this button' = every time you press it.
3."doesn't"(c)
'The engine' is third person singular → 'doesn't'. This is a general fact, not a future prediction, so we use present simple (not 'won't').
4."If"(d)
'If you eat too much sugar' introduces a zero conditional — a general truth. 'Unless' would reverse the meaning (= if you don't eat).
5."wear"(b)
'Unless' already means 'if...not', so do NOT add another negative. 'Unless you wear' = 'If you don't wear'.
... and 15 more explanations in the PDF
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