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Question

In this section, look at underlined part of each sentence. There are three possible substitutions for the underlined part. If one of them (a), (b) or (c) is better than the underlined part, indicate your response on the Answer Sheet against the corresponding letter (a), (b), or (c). If none of the substitutions improves the sentence, indicate (d) as your response on the Answer Sheet. Thus a 'No improvement' response will be signified by the letter (D).

He ought not to tell me your secret, but he did.

This question was previously asked in
NDA I 2017 GAT Previous Year Paper (23-Apr-2017)
The correct answer is

have told

Analyzing the Sentence and Underlined Part

The original sentence is: "He ought not to tell me your secret, but he did."

The underlined part is "ought not to tell". The sentence states that "he did" tell the secret, which is a past action. The phrase "ought not to tell" usually refers to a present or future obligation or advice – something someone should not do *now* or *in the future*. However, the context ("but he did") clearly indicates that the telling of the secret happened in the past.

Understanding 'Ought' and Past Actions

'Ought to' is a modal verb used to express duty, desirability, or moral obligation. When talking about past actions or obligations that were not fulfilled or should not have happened, we use the structure:

ought to have + past participle

For a negative past obligation or action that should not have happened, the structure is:

ought not to have + past participle

In the given sentence, the action (telling the secret) happened in the past ("he did"). Therefore, to express that this past action should not have happened, we need to use the past form of the modal verb construction.

Evaluating the Substitution Options

Let's look at the provided options for substituting "ought not to tell":

  1. telling
  2. have told
  3. having told
  4. No improvement

Option Analysis:

  • (a) telling: If we substitute "telling", the sentence becomes "He ought not to telling me your secret, but he did." This is grammatically incorrect. The construction "ought to + -ing form" is not standard English.
  • (b) have told: If we substitute "have told", the sentence becomes "He ought not to have told me your secret, but he did." This follows the correct structure for expressing a past obligation or action that should not have occurred: "ought not to have + past participle ('told')". This accurately reflects the situation described in the sentence – he told the secret in the past, but he should not have done so.
  • (c) having told: If we substitute "having told", the sentence becomes "He ought not to having told me your secret, but he did." This is also grammatically incorrect. "Having told" is a perfect participle and is not used directly after "ought not to" in this way to form the main verb phrase expressing past modality.
  • (d) No improvement: The original sentence "He ought not to tell me your secret, but he did" is incorrect because "ought not to tell" refers to present/future, contradicting the past action indicated by "but he did". Therefore, an improvement is necessary.

Conclusion on the Best Substitution

Based on the analysis, the only grammatically correct and contextually appropriate substitution for "ought not to tell" to refer to a past action is "have told". This completes the structure "ought not to have told".

Underlined Part Option Resulting Phrase Grammatical Correctness Refers to Past?
ought not to tell (original) ought not to tell Incorrect in past context No (present/future)
ought not to tell (a) telling ought not to telling Incorrect N/A
ought not to tell (b) have told ought not to have told Correct Yes
ought not to tell (c) having told ought not to having told Incorrect N/A

Revision Table: Correcting Modal Verbs

Concept Structure (Present/Future) Example Structure (Past) Example
Obligation/Advice (Positive) ought to + base verb You ought to study. ought to have + past participle You ought to have studied.
Obligation/Advice (Negative) ought not to + base verb You ought not to lie. ought not to have + past participle You ought not to have lied.

Additional Information: Other Past Modal Forms

Besides 'ought to have', other modal verbs have past forms to talk about past possibilities, regrets, or necessities:

  • Should have + past participle: Similar to 'ought to have', expresses regret or that something desirable didn't happen in the past (e.g., I should have called you).
  • Could have + past participle: Expresses a past ability or possibility that was not realized (e.g., I could have gone to the party, but I was tired).
  • Would have + past participle: Used in third conditional sentences to express an unrealized past outcome (e.g., If I had known, I would have helped).
  • Must have + past participle: Expresses a conclusion or deduction about something that happened in the past (e.g., He's late; he must have missed the bus).

Understanding these past modal forms is crucial for accurate expression of past events and states using modal verbs.

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Similar Questions

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Important Questions from Phrase Replacement

  1. Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, No substitution required.

    Not knowing the language and having no acquaintances in the city, he found it hard getting work.

  2. Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, select option No substitution required.

    We had been almost halfway there when the left rear tyre blew out

  3. Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, select option No substitution required.

    The man spent a lot because he had so large amount of money.

  4. Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, select ‘No improvement’.

    In the past, promises have been made, kept, and broken, and they are being make yet again.

  5. Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, select ‘No improvement’.

    September is one of the busiest months of the year, with a range of different tasks at hand

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