Parenthetical expressions and nonrestrictive clauses add additional information to a sentence without changing its essential meaning. They refer to elements of a sentence that are unessential to the sentence’s core meaning and can be removed without changing the essential meaning of the sentence. Parentheses, commas, or dashes usually set off parenthetical expressions and Nonrestrictive clauses.

Examples:

Sentence: Anderson who is a very famous football player, was seen at the mall.

Correct sentence: Anderson, who is a very famous football player, was seen at the mall.

Punctuation in a sentence helps in ending, pausing, and emphasizing the clauses and phrases in a sentence. Hence punctuation should be used only where it is required.

Examples:

Sentence: The book was placed on a hard, to reach, shelf.

Correct sentence: The book was placed on a hard-to-reach shelf.

In combining or separating the sentence, the structure of the sentence varies depending on the two independent clauses.

Examples:

Sentence: She was feeling very ill however, she went to the office.

Correct sentence: She was feeling very ill. However, she went to the office.

The word pairs are always used together to indicate similarity and dissimilar comparisons in a sentence.

Examples:

Sentence: In the college, neither James or William is as famous as Peterson.

Correct sentence: In the college, neither James nor William is as famous as Peterson.