Adjectival clause

Adjectival clause 

Definition:
 
An adjective clause (also called relative clause) is a dependent clause that modifies a noun or pronoun. It tells which oneor what kind. Adjective clauses almost always come right after the nouns they modify.
There is the mountain that we are going to climb.
My blue tennis shoes, which used to be my mom's, were under the bed.
Daniel, who was late again today, sits next to me in English.

Using dependent clauses is a way of combining sentences.

Daniel was late again today + Daniel sits next to me in English = Daniel, who was late again today, sits next to me in English.

With relative pronouns - An adjective clause generally begins with a relative pronoun (that, which, who, whom, whose) that connects the clause to the noun or pronoun it modifies. The relative pronoun shows the relationship between the clause and the antecedent.

There is the mountain that we are going to climb(Antecedent = mountain. That connects the clause we are going to climb thatwith the antecedent.)

My blue tennis shoes, which used to be my mom's, were under the bed. (Antecedent = shoes. Which is a pronoun replacing shoes in the dependent clause shoes used to be my mom's and relating it to the subject of the independent clause.)

Daniel, who was late again today, sits next to me in English. (Antecedent = Daniel, Who = Daniel, so the dependent clause means Daniel was late again today.  Who is replacing Daniel in the second clause and relating it to the subject of the independent clause.)

The relative pronoun has a grammatical function in the sentence.

There is the mountain that we are going to climb(That is the direct object of the infinitive to climb.)
My blue tennis shoes, which used to be my mom's, were under the bed. (Which is the subject of the verb used.)
Daniel, who was late again today, sits next to me in English. (Who is the subject of the dependent clause.)
Hint:
When choosing between who and whom, consider how the pronoun is used in the dependent clause, not the independent clause.

These are the students who are going.  (Who is the subject of the dependent clause.)
These are the students.  Who are going. (They are going.)

Those are the students for whom I bought the tickets. (Whom is the object of the preposition for.)
Those are the students. I bought the tickets for whom. (I bought the tickets for them.)

With understood pronouns - Sometimes the relative pronoun is understood and not written in the sentence.

Have you seen the book I lost?
Have you seen the book [that] I lost?

The teacher I had in fifth grade really inspired me.
The teacher [whom] I had in fifth grade really inspired me.

With prepositions - If the relative pronoun is the object of a preposition and is left out, the preposition has no choice but to dangle. In informal, spoken English, this is fine. It is also fine in spoken English to end the clause with the preposition. However, in formal English it is better to put the preposition before the pronoun. Note that the preposition is part of the dependent clause.

This movie was the sequel we had been waiting for(Informal)
This movie was the sequel, which we had been waiting for. (Informal)
This movie was the sequel for which we had been waiting. (Formal)

Do you know the actor Shelly is talking about(Informal)
Do you know the actor that Shelly is talking about? (Informal)
Do you know the actor about whom Shelly is talking? (Formal) (Note that that becomes whom or which.)

With relative adverbs - Adjective clauses can also start with the relative adverbs wherewhen, and why. They connect the dependent clause to a noun in the sentence. The relative adverb modifies the verb in the dependent clause.

That is the bench where you and I were supposed to meet.
Six o'clock was the time when we were supposed to be there.
That is the reason why I couldn't meet you.

BB

Definition:
 
An adjective clause is restrictive (also called essential) if it narrows down the word it modifies. It tells which one of the noun you are writing about. A restrictive adjective clause is necessary to the meaning of the sentence. It is not separated from the rest of the sentence by commas.
The players who are wearing the red uniforms are winning the game.
If we take out the clause, we won\"t know which players are winning the game. It\"s a restrictive or essential clause.
Definition:
 
An adjective clause is nonrestrictive (also called nonessential) if we know exactly who is being written about without it. A nonrestrictive adjective clause is simply adding extra information. Nonrestrictive adjective clauses need commas around them.
Those girls, who have been friends for years, are all going to the same college.
Without the clause, we still know that those girls are going to the same college. The clause is nonrestrictive.

A proper noun is usually followed by a nonrestrictive clause.

Amanda, who is my best friend, is on the honor roll again.
Without the clause, we know that it is Amanda who is on the honor roll.

That versus Which

The relative pronoun that always begins a restrictive clause.  Thatcan be used to replace whowhom, or which in restrictive clauses, but many teachers prefer students to use that only with non-human antecedents.

The oranges that you need for this recipe are on the table.
The workers who built this bridge did a good job.

The relative pronoun which generally begins a nonrestrictive clause. It can begin a restrictive clause, but most style manuals prefer writers use it only for nonrestrictive clauses.

The oranges, which have been sitting on the table for a week, are starting to look brown.