* Number: If the subject is singular, the verb must be singular. If the subject is plural, the verb must be plural.
* Person: The verb must match the person of the subject.
Here's a breakdown:
Person | Singular | Plural
------- | -------- | --------
1st | I am | We are
2nd | You are | You are
3rd | He/She/It is | They are
Example:
* Incorrect: The cat are sleeping. (Subject is singular, verb is plural)
* Correct: The cat is sleeping. (Subject and verb both singular)
* Incorrect: You is going to the store. (Subject is second person, verb is third person)
* Correct: You are going to the store. (Subject and verb both second person)
Important Note:
While English is a relatively simple language for verb conjugation, some irregular verbs have unique forms.
For example:
* I am (1st person singular)
* You are (2nd person singular)
* He/She/It is (3rd person singular)
It's important to familiarize yourself with the conjugation patterns of irregular verbs to ensure your writing is grammatically correct.