Which of the following conditional sentences are grammatically INCORRECT?
- If Sandhya had started from the hotel on time, she would have not missed the ight.
- The students wouldn’t have completed their assignment even if the professor would have been there.
- I had travelled across Europe if I weren’t afraid of airplane crashes.
- Saurav won’t join music classes unless his father will ask him.
- Should you wish to join the party, you must let me know by this evening.
- We would be stupid if we shared our strategy with her.
C
Step-by-Step Solution
Key idea: Conditional sentences require strict tense pairing between the if-clause and the main clause.
Step 1: Analyze sentence 1. "If Sandhya had started... she would have not missed". While "would not have" is preferred stylistically, the tense pairing (past perfect -> conditional perfect) is structurally intact.
Step 2: Analyze sentence 2. "even if the professor would have been there". This is incorrect. The if-clause of a third conditional must use the past perfect ("had been"), never "would have".
Step 3: Analyze sentence 3. "I had travelled... if I weren't afraid". This is incorrect. It mixes past perfect ("had travelled") with a present unreal condition ("if I weren't"). It should be "I would travel... if I weren't" or "I would have travelled... if I hadn't been".
Step 4: Analyze sentence 4. "unless his father will ask him". This is incorrect. Clauses following "unless" must use the present tense, not the future tense ("asks him").
Step 5: Analyze sentence 5. "Should you wish..." is a correct inverted conditional (equivalent to "If you should wish").
Step 6: Analyze sentence 6. "We would be stupid if we shared..." is a correct second conditional structure.
Conclusion: Sentences 2, 3, and 4 are grammatically incorrect. This matches option C.