The relative pronoun that is used with an essential clause, and the relative pronoun which is used with a nonessential clause. in 3 - 5 sentences, explain when to use each pronoun and the difference between the two types of relative clauses.

The relative pronoun "that" is used with an essential clause, also known as a restrictive clause. This type of clause provides necessary information to the sentence and cannot be easily omitted without changing the overall meaning of the sentence. It restricts or narrows down the meaning of the main noun it is modifying. For example, in the sentence "I like the book that you gave me," the essential clause "that you gave me" is necessary to understand which book is being referred to.

On the other hand, the relative pronoun "which" is used with a nonessential clause, also known as a nonrestrictive clause. This type of clause provides additional, nonessential information to the sentence. It can be easily removed from the sentence without significantly changing its meaning. Nonessential clauses are typically set apart by commas. For instance, in the sentence "I enjoyed the movie, which was recommended by a friend," the nonessential clause "which was recommended by a friend" is not crucial to understanding which movie was enjoyed.

The main difference between essential and nonessential clauses lies in their necessity to convey the intended meaning of a sentence. Essential clauses are crucial to the meaning of the sentence, while nonessential clauses provide additional information but can be removed without affecting the core meaning. The choice between "that" and "which" depends on whether the clause is essential or nonessential, respectively.

The relative pronoun "that" is used to introduce essential clauses, which are also known as restrictive clauses. These clauses provide necessary information to define or identify the noun they are modifying. "That" should be used when the information in the clause is necessary for the sentence's meaning and cannot be removed without changing the sense of the sentence. Essential clauses are not set off by commas.

On the other hand, the relative pronoun "which" is used to introduce nonessential clauses, also called nonrestrictive clauses. These clauses provide additional information about the noun they modify, but the information is not essential to the sentence's meaning. "Which" should be used when the information can be removed from the sentence without altering the overall meaning. Nonessential clauses are surrounded by commas.

For example:
1. "The book that I borrowed from the library is very informative." Here, the essential clause "that I borrowed from the library" defines which book is being referred to, and it cannot be omitted without changing the sentence's meaning.
2. "My car, which is red, needs a new paint job." In this sentence, the nonessential clause "which is red" adds additional information about the car but can be removed without affecting the main idea of the sentence.

In summary, "that" introduces essential clauses that are necessary for the sentence's meaning and are not set off by commas. "Which" introduces nonessential clauses providing additional information that can be omitted without changing the overall meaning, and these clauses are set off by commas.

When determining whether to use the relative pronoun "that" or "which," it is important to consider whether the information provided by the relative clause is essential or nonessential to the meaning of the sentence.

"That" is used with essential clauses, also known as restrictive clauses. These provide necessary information that is essential to the sentence's meaning. For example, "The book that I borrowed is on the table" implies that there are multiple books, and the one being referred to is the specific one that was borrowed.

"On the other hand, "which" is used with nonessential clauses, also known as nonrestrictive clauses. These provide additional information that is not necessary for the sentence's meaning. For example, "My phone, which is blue, fell out of my pocket." The information enclosed within the nonessential clause does not affect the understanding of which phone fell out of the pocket, as it is simply adding an extra detail.

In summary, "that" is used with essential clauses that are crucial to the sentence's meaning, while "which" is used with nonessential clauses that provide extra information but can be removed without changing the sentence's essential meaning.