English grammar – Spot the error (choose the part with an error or “No error”). Sentence: He ought / not have / done such a / filthy thing.

Question

Solve this multiple-choice question and choose the correct option.

Accepted Answer

Introduction / Context:The item tests the correct construction with the modal “ought to.” The sentence is split into four parts; pick the incorrect fragment. Given Data / Assumptions: “Ought to” must be followed by a bare infinitive. In perfect infinitive constructions, use “ought not to have + past participle.” Concept / Approach:The fragment “not have” is missing “to.” The correct negative is “ought not to have done …”. Step-by-Step Solution: A: “He ought” — start of a modal phrase; expects “to.”B: “not have” — error; should be “not to have.”C: “done such a” — correct determiner phrase with past participle.D: “filthy thing.” — grammatical object phrase. Verification / Alternative check: Corrected: “He ought not to have done such a filthy thing.” Why Other Options Are Wrong: Only B contains the structural omission; A, C, and D are fine in context. Common Pitfalls: Dropping “to” after “ought,” especially in negatives and questions. Final Answer:not have

English grammar – Spot the error (choose the part with an error or “No error”). Sentence: He ought / not have / done such a / filthy thing.

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