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

1) "That" is used with an essential clause, which is also known as a restrictive clause. It provides necessary information to identify or specify the noun or noun phrase it modifies. For example: "The book that I borrowed from the library is due tomorrow." In this sentence, the essential clause "that I borrowed from the library" is necessary to identify which book is being referred to.

2) "Which" is used with a nonessential clause, which is also known as a nonrestrictive clause. It provides additional information about the noun or noun phrase it modifies, but can be removed without altering the basic meaning of the sentence. For example: "The book, which was written by my favorite author, is due tomorrow." In this sentence, the nonessential clause "which was written by my favorite author" provides extra information, but it is not necessary to understand the main point, which is that the book is due tomorrow.

3) The key difference between essential and nonessential clauses lies in their importance to the sentence. Essential clauses are crucial to identifying the noun or noun phrase and cannot be omitted without changing the meaning of the sentence. Nonessential clauses, on the other hand, provide additional information but can be removed without affecting the core meaning of the sentence. The choice between "that" and "which" depends on whether the clause is necessary (use "that") or optional (use "which"). Remember, essential clauses do not require commas, while nonessential clauses are set off by commas.

I said 3 sentences not 3 paragraphs

Apologies for the lengthy response. Here are three concise sentences explaining the use and difference between "that" and "which" in relative clauses:

1) Use "that" with an essential clause, which is necessary to identify or specify the noun it modifies. Example: "The car that he bought yesterday is red."

2) Use "which" with a nonessential clause, which provides additional information but can be removed without changing the core meaning of the sentence. Example: "His new car, which is red, looks stunning."

3) The difference between the two types of clauses is that essential clauses are crucial to understanding the sentence's meaning, while nonessential clauses provide extra, non-essential information and can be omitted without altering the sentence's core message.

Actuallyn2 sentences explain it fully in two sentences

Apologies for the confusion. Here are two sentences that explain the use and difference between "that" and "which" in relative clauses:

1) "That" is used with essential clauses, providing necessary information to identify the noun or noun phrase it modifies (e.g., "The book that I borrowed has been returned").
2) "Which" is used with nonessential clauses, offering additional information but can be omitted without altering the main point of the sentence (e.g., "My favorite book, which I borrowed from the library, is due tomorrow").

Rewrite the following paragraph, replacing commas with semicolons where they are needed.

Make it short too

This summer, a popular sandwich shop called Mark’s Deli will be opening downtown. The deli will offer free tastings of their most popular sandwiches on Friday, May 10, Saturday, May 11, and Sunday, May 12. The samples will include mouth-watering bites of the Veggie Deluxe, a wrap with roasted vegetables and hummus, the Italian Combo, a selection of Italian meats and cheeses on a roll, and the famous B.L.T., made with bacon, lettuce, and tomato on toasted rye bread. Mark’s Deli already has several other locations including Boston, Massachusetts, Brooklyn, New York, and Portland, Maine

This summer, a popular sandwich shop called Mark’s Deli will be opening downtown; the deli will offer free tastings of their most popular sandwiches on Friday, May 10; Saturday, May 11; and Sunday, May 12. The samples will include mouth-watering bites of the Veggie Deluxe, a wrap with roasted vegetables and hummus; the Italian Combo, a selection of Italian meats and cheeses on a roll; and the famous B.L.T., made with bacon, lettuce, and tomato on toasted rye bread. Mark’s Deli already has several other locations including Boston, Massachusetts; Brooklyn, New York; and Portland, Maine.