A name of one person is always singular.
Usually you can tell if a noun is Plural because it nearly always adds -s. ("baby" is singular. Plural: "babies").
Some exceptions to this rule are "man" (Singular) "men" (Plural). "woman" Singular. Plural "women".
sheep doesn't add -s One sheep: singular two sheep Plural
* The singular noun "Sally" is the subject of the sentence because she is the person who "hates".
"hates" is the verb. It is third person singular because "Sally" is singular.
"pie" is the direct object of the verb "hates".
1. "She likes fruit" The word "She" is a third person, feminine singular pronoun.
The word "likes" is a verb in the Present tense. It is third person singular to agree with the subject "She"
2. "They like movies" The pronoun "They" is third person plural because it refers to more than one person. "They" is the subject of the verb "like".
"like" is a verb in the Present tense. It agrees with the subject "They". So it is third person plural.
"movies" is plural because the word refers to more than one movie. (It has an s on the end).
"movies" is the direct object of the verb "like" because "movies" is what "They like".
3. "You are learning grammar"
The pronoun "You" is the subject of the sentence. It is second person and the same word "You" is used whether it is singular or plural.
The verb "are learning" is Present continuous tense, second person to agree with the subject "You".
The noun "grammar" is singular. It is the direct object of the verb "are learning".
4. "I am answering your question" The pronoun "I" is the subject of the sentence. It's singular. It is first person.
The verb "am answering" is present continuous tense. It agrees with the subject "I".
The noun "question" is singular. It's the direct object of the verb. (It's what I am answering).
5. "We are using English."
The pronoun "We" is the subject of the sentence.
The word "We" is plural. It refers to more than one person. It's first person plural.
The verb in this sentence is "are using". It's in the present tense and agrees with the subject "We".
"English" is a singular noun. It has a capital letter because it is a Proper noun: (a name).
"English" is the direct object of the verb "are using".