Standard English ConventionsHardPast conditional with 'would have'
Standard English Conventions practice question
If the alarm had sounded, the guards ____ the fire much earlier.
Which choice completes the text so that it conforms to the conventions of Standard English?
- A. would have noticedCorrect
- B. would notice
- C. will notice
- D. had noticed
Answer: A. would have noticed
The 'if' clause uses the past perfect ('had sounded'), describing something that didn't happen. The result of such an unreal past condition takes 'would have' + participle.
Why the other answers are wrong
- B. would notice
- 'would notice' pairs with a present unreal condition ('if the alarm sounded'), not a past one.
- C. will notice
- 'will notice' is a real future, but the alarm did not sound.
- D. had noticed
- 'had noticed' repeats the past perfect in the result clause, which needs 'would have'.
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