Final answer:
The verb in the sentence 'She buys some apples' is 'buys'. It signifies an action being performed by the singular subject 'she', demonstrating correct subject-verb agreement in English.
Step-by-step explanation:
The verb in the sentence "She buys some apples" is buys. Verbs are action words or state of being words in a sentence. In this sentence, the action being performed by the subject (she) is 'buys', which indicates the action of purchasing something. This action word is a present tense verb, contrasting with its past tense form 'bought', as outlined in your reference section with verbs like buy/bought/bought.
The verb 'buys' aligns with the singular subject 'she' as per standard English agreement rules. When the subject is singular, the verb must also be singular, as in 'He drives' versus 'They drive'. The correct agreement between the subject and verb is crucial for grammatical accuracy in English.