Sentence improvement: modal perfect form with “should” (should + not + have + past participle) Original sentence: "He should not had done it." Choose the correct modal construction.
Verbal Ability
Sentence Correction
Difficulty: Easy
Choose an option
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Ahad not
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Bshould had not
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Cshould not have
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Dshould have
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ENo correction required
Answer
Correct Answer: should not have
Explanation
ConceptThe correct form after a modal is always the base infinitive, so the past counterfactual uses should not have + past participle: "should not have done".
Option analysisshould not have — correct sequence with "done" implied. ✅had not / should had not — misuse of "had" after a modal.should have — lacks "not"; changes meaning.
Final Answershould not have (done it).