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Question

Each of the following sentences has a blank space and four words are given below it. Select the word or group of words you consider most appropriate for the blank space and indicate your response accordingly

If Mohan________ at 5 a.m., he would not have missed the train.

This question was previously asked in
CDS I 2017 General Knowledge Previous Year Paper (05-Feb-2017)
The correct answer is

Had started

Understanding Conditional Sentences: Filling the Blank

The question asks us to select the most appropriate word to fill the blank in the sentence: "If Mohan________ at 5 a.m., he would not have missed the train." This sentence is an example of a conditional sentence in English grammar.

Identifying the Conditional Type

Conditional sentences often describe a cause and effect relationship or hypothetical situations. They typically have two parts: the 'if' clause (which states the condition) and the main clause (which states the result). The sentence provided has the structure:

  • 'If' clause: "If Mohan________ at 5 a.m."
  • Main clause: "he would not have missed the train."

Let's look closely at the main clause, "he would not have missed the train." This structure, would have + past participle (missed), is characteristic of the result clause in a specific type of conditional sentence: the third conditional.

The Third Conditional Sentence Structure

The third conditional is used to talk about hypothetical situations in the past and their hypothetical results in the past. It describes something that did not happen and its consequence that also did not happen. The standard structure is:

If + past perfect in the 'if' clause, + would/could/might have + past participle in the main clause.

So, the 'if' clause requires the past perfect tense. The past perfect tense is formed using had + past participle of the verb.

In our sentence, the verb needed for the blank is 'start'. The past participle of 'start' is 'started'. Therefore, the past perfect form is had started.

Analyzing the Options

Let's examine the given options based on the requirement for the past perfect tense in the 'if' clause of a third conditional sentence:

  1. Started: This is the simple past tense. The simple past is used in the 'if' clause of the second conditional (e.g., "If Mohan started at 5 a.m., he would catch the train."), which talks about a hypothetical situation in the present or future. This does not fit the third conditional structure required by the main clause.
  2. Had started: This is the past perfect tense (had + past participle). This matches the required tense for the 'if' clause in a third conditional sentence. This option fits the structure "If + past perfect, ... would have + past participle".
  3. Would start: 'Would' is used in the main clause of conditional sentences or sometimes in reported speech or to express willingness. It is not used directly after 'If' in standard conditional clauses like this.
  4. Has started: This is the present perfect tense. The present perfect is not used in the 'if' clause of third conditional sentences, which refer to past hypothetical situations.

Based on the analysis of the third conditional structure and the given options, only 'Had started' correctly completes the 'if' clause.

Completing the Sentence

Substituting the correct option, the complete sentence is:

"If Mohan had started at 5 a.m., he would not have missed the train."

This sentence correctly expresses a hypothetical past condition (Mohan starting at 5 a.m. did not happen) and its hypothetical past result (he missed the train because he didn't start at 5 a.m.).

Revision Table: Types of Conditional Sentences

Type Usage Structure (If clause, Main clause) Example
Zero Conditional Facts, general truths, scientific facts If + Present Simple, Present Simple If you heat water, it boils.
First Conditional Real possibility in the present/future If + Present Simple, Will + Base Verb If it rains tomorrow, we will stay home.
Second Conditional Hypothetical or unlikely situations in the present/future If + Past Simple, Would + Base Verb If I had a million dollars, I would travel the world.
Third Conditional Hypothetical situations in the past and their past results If + Past Perfect, Would/Could/Might have + Past Participle If she had studied harder, she would have passed the exam.

Additional Information: Using the Third Conditional

The third conditional is often used to express regret or to talk about missed opportunities. It helps us reflect on how past events, if they had been different, would have led to different outcomes.

  • It always refers to a time in the past.
  • The condition in the 'if' clause was not met.
  • The result in the main clause did not happen.
  • We can use 'could have' or 'might have' instead of 'would have' to express possibility rather than certainty about the past result. For example, "If he had started earlier, he might have caught the train."
  • The order of the clauses can be reversed, but if the 'if' clause comes second, you don't use a comma. Example: "He would not have missed the train if Mohan had started at 5 a.m."
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Important Questions from Fill in the Blanks

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    Many people today have fallen into utter confusion of values with the result that they cannot______ the good from the bad.

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    His property was divided ______ his daughters and sons.

  5. Each of the following sentences has a blank space and four words are given below it. Select the word or group of words you consider most appropriate for the blank space and indicate your response accordingly

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