Direction: A sentence/part of the sentence is emboldened. Five alternatives are given to the embolden part which will improve the sentence. Choose the correct alternative and choose the option corresponding to it. In case no improvement is needed, click the option corresponding to ‘No improvement required’. No witnesses to the accident have come forward yet, despite the police's appeal.
No improvement required
Sentence Analysis: Subject-Verb Agreement
The sentence in question is: "No witnesses to the accident have come forward yet, despite the police's appeal." The part that needs examination is the verb phrase "have come forward".
Understanding the Subject
The subject of the sentence is "No witnesses". The key noun here is "witnesses", which is plural.
Verb Agreement Rules
In English grammar, the verb must agree in number with its subject.
- Plural subjects require plural verbs.
- Singular subjects require singular verbs.
The verb phrase "have come forward" uses the auxiliary verb "have". "Have" is the correct form to use with plural subjects (like "witnesses", "they", "we", "you") and also with "I". The singular form is "has", used with third-person singular subjects (like "he", "she", "it", "the witness").
Evaluating the Options
- Option 1: came forward - This is the simple past tense. While grammatically possible in some contexts, the original sentence uses the present perfect tense ("have come forward"), which appropriately links the past action (or lack thereof) to the present situation ("yet").
- Option 2: comes forward - This uses the singular, present tense verb form. It is incorrect because the subject "witnesses" is plural.
- Option 3: have come forward - This is the original phrase. It correctly uses the plural auxiliary verb "have" which agrees with the plural subject "witnesses". The present perfect tense is suitable here, indicating that up to the present moment, no witnesses have appeared despite the appeal.
- Option 4: has come forward - This uses the singular auxiliary verb "has". It is incorrect because the subject "witnesses" is plural.
- Option 5: No improvement required - Since the original phrase "have come forward" correctly matches the plural subject "witnesses" and uses an appropriate tense, this option is the correct choice.
Conclusion
The sentence "No witnesses to the accident have come forward yet, despite the police's appeal" is grammatically correct as written. The plural subject "witnesses" correctly pairs with the plural verb form "have come forward". Therefore, no improvement is needed.
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