Reduced relative clauses are a type of relative clause that has been shortened or simplified. They are used to provide additional information about a noun or pronoun in a sentence.

In a reduced relative clause, the relative pronoun (such as “who,” “which,” or “that”) and the verb “be” are often omitted. This creates a more concise and streamlined sentence.

For example, consider the following sentence with a full relative clause:

“The woman who is wearing a red dress is my sister.”

In a reduced relative clause, this sentence could be shortened to:

“The woman wearing a red dress is my sister.”

In this example, the relative pronoun “who” and the verb “is” have been omitted, resulting in a reduced relative clause.

Reduced relative clauses are commonly used in spoken and informal English, but they can also be used in formal writing. However, it is important to note that not all relative clauses can be reduced. The decision to use a reduced relative clause depends on the context and the clarity of the sentence.