Deduction (Past)
📖 Lesson: Deduction (Past)
Definition
Making logical guesses about the PAST.
Formula
MODAL + HAVE + PAST PARTICIPLE (V3)
Examples
- *Must have done*: "The streets are wet. It *must have rained*." (I am sure it did).
- *Can't have done*: "He *can't have stolen* it; he was with me." (Impossible).
- *Might have done*: "I *might have left* my keys in the car." (Possible).
Should Have Done
- Regret/Criticism: "You *should have studied*." (But you didn't).
📋 Practice Questions
10 questions from this quiz — preview them here, then take the interactive quiz above. Your full answer review with explanations unlocks when you finish the test.
- Amust
- Bmust have
- Cshould have
- Dcan't have
- Amustn't have
- Bcan't have
- Cshouldn't have
- Dmight not
- Amust have
- Bmust
- Ccan have
- Ddid
- Amustn't have
- Bcan't have
- Cshouldn't have
- Dmay not
- Amust have
- Bshould have
- Ccan have
- Dneed have
- Acan't have
- Bmustn't have
- Cshouldn't have
- Dmay not
- Amust have
- Bshould have
- Ccan have
- Dneed have
- Amust have
- Bcan have
- Cshould have
- Dneed have
- Amust have
- Bcan't have
- Cshould have
- Dneed have
- Amust have
- Bshould have
- Ccan have
- Dneed have
🔗 Keep Practicing
✅ Answer Review
Nice work finishing the test — here is every question with the correct answer and explanation.
- Amust
- Bmust have
- Cshould have
- Dcan't have
Correct answer: B) must have
Logical conclusion about past.
- Amustn't have
- Bcan't have
- Cshouldn't have
- Dmight not
Correct answer: B) can't have
Impossible in past.
- Amust have
- Bmust
- Ccan have
- Ddid
Correct answer: A) must have
Certainty about past.
- Amustn't have
- Bcan't have
- Cshouldn't have
- Dmay not
Correct answer: B) can't have
Deduction.
- Amust have
- Bshould have
- Ccan have
- Dneed have
Correct answer: A) must have
Conclusion.
- Acan't have
- Bmustn't have
- Cshouldn't have
- Dmay not
Correct answer: A) can't have
Impossibility.
- Amust have
- Bshould have
- Ccan have
- Dneed have
Correct answer: A) must have
Opinion/Deduction.
- Amust have
- Bcan have
- Cshould have
- Dneed have
Correct answer: A) must have
Logical guess.
- Amust have
- Bcan't have
- Cshould have
- Dneed have
Correct answer: A) must have
High probability.
- Amust have
- Bshould have
- Ccan have
- Dneed have
Correct answer: A) must have
Deduction.