It looks like you're referring to a specific lesson on subject-verb agreement, which is an important aspect of grammar. In general, the rule is quite straightforward:
- Singular nouns (e.g., "the cat," "a car") take singular verbs (e.g., "runs," "is").
- Plural nouns (e.g., "the cats," "cars") take plural verbs (e.g., "run," "are").
Here are some examples to illustrate:
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Singular:
- The dog barks every morning.
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Plural:
- The dogs bark every morning.
If you have specific sentences or examples you’d like to discuss or clarify, feel free to share!