Select the most appropriate option to improve the bold part of the sentence. He did not knew the answer.
know
Grammar Correction: Fixing the Verb Form
The sentence "He did not knew the answer" contains a grammatical error in the verb form used after the auxiliary verb "did not".
Understanding Auxiliary Verbs and Verb Forms
In English grammar, when we use auxiliary verbs like do, does, or did in negative sentences (e.g., "do not", "does not", "did not") or questions, the main verb that follows must be in its base form (infinitive without 'to').
The base form of the verb 'to know' is know.
- Incorrect: He did not knew.
- Correct: He did not know.
Analyzing the Options
Let's look at why the other options are incorrect:
- knows: This is the third-person singular present tense form, used with subjects like 'he', 'she', or 'it' in simple present tense (e.g., "He knows the answer"). It's not used after "did not".
- Knews: This is incorrect as it is either a proper noun (referring to news) or a misspelling. It is not a standard verb form.
- knowing: This is the present participle form, used for continuous tenses (e.g., "He was knowing") or as a gerund. It is not used after "did not".
- know: This is the base form (infinitive) of the verb. It is the correct form to use after the auxiliary verb "did not".
Applying the Correct Verb Form
Therefore, the sentence should be corrected using the base form 'know'. The corrected sentence is: "He did not know the answer."
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