Adjective Clauses
♦The woman who is standing over there is from Polatlı.
♦Did you know that the woman to whom you were speaking is Shirley’s husband?
♦He attended the meeting that was held yesterday afternoon.
♦ Are you going to apply for the job that was advertised yesterday?
♦Do you know the name of the woman whose car is parked outside?
♦The day when my daughter was born was the happiest day of my life.
♦The place where they live is very dangerous.
♦I do not know the reason why we cannot pay by credit card.

1-Adjective clauses are subordinate (dependent) clauses that have the same function as single-word adjectives. They describe and modify nouns.
2-The following words are called relative pronouns, and they form adjective clauses.
1-who 4-that
2-whom 5-whose
3-which
3-The following subordinators also form adjective clauses. They are called relative adverbs.
1-when
2-whre
3-why
4-Who refers only to people.
♦The man is a police officer. He lives next door.
The man who lives next door is a police officer.
5- Just like who, whom also refers to people. However, it is the objective form of who, and it cannot be used instead of whom.
♦He is a police officer. I respect him very much.
He is a police officer whom I respect very much.
(İnformal dilde who, whom’un yerine kullanılabilir. Ancak whom, who yerine kullanılamaz. Yazı dilinde daima WHOM tercih edilir.)
6-Which refers to animals, things, and groups of people (the audience, crowd, class).
♦Last week someone hit John’s dog. The dog was only a puppy.
Last week someone hit John’s dog, which was only a puppy.
♦The driver ran through a stop sign. The stop sign is on the corner.
The driver ran through a stop sign, which is on the corner.
7-That refers to people, animals, and things.
♦The police officers respect me. The Officer Smith works with them.
The police officers that Officer Smith works with respect me.
♦I gave his son a book. The book tells about caring for pets.
I gave his son a book that tells about caring for pets.
8-Whose shows possession and is used for animals, people, groups of people and things.
♦The manager is rich. His coat is really excellent.
The manager whose coat is really excellent is rich.
♦This house is very old. Its roof has holes in it.
This house whose roof has holes in it is very old.
Although whose may express a possessive relationship for things, speakers often use a with phrase.
♦The old house with the old roof needs a lot of repair work.
The old house whose roof is very old needs o lot of repair work.
9-♫The relative adverb when forms adjectives clauses which describe nouns referring to time.
♦ This is the time of the year. There are good sales now.
This the time of the year when there are good sales.
♫The relative adverb where forms adjective clauses referring to location (place).
♦This is the music store. My friend works here.
This is the music store where my friend works.
♫The relative adverb why forms adjective clauses which modify such nouns as reason and explanation.
♦My friend did not tell me the reason. He quit his job.
My friend didn’t tell me the reason why he quit his job.
NOTE: Be careful not to confuse adjective clauses beginning with when and where and adverb clauses beginning with when and where. Remember that adjective clauses modify nouns, but adverb clauses modify verbs.
♦ADJ. Clause:My parents called on a day when I was out.
ADV:Clause:My parents called when I was out.

Defining and Non-defining Relative Clauses
1-Sometimes an adjective clause is needed to identify a noun and to make the meaning of the sentence clear. A necessary adjective clause is also called restrictive adjective clause.
a)-All students who do not study will fail this course.
b)-All students, who do not study will fail this course.
In sentence A, only those students who do not study will fail.
In B, all the students will fail since all of them do not study.
c)-My brother who lives in Polatlı is going to get married next week.
d)-My brother, who lives in Polatlı, is going to get married next week.
In sentence C, I have more than one brother. However, in the next sentence, I have only one brother, and he lives in Polatlı.
2-Non-defining relative clauses are separated from the rest of the sentence by commas.
♦My father, who is very tall, played tennis in college.
3- The relative pronoun that is used to form only necessary adjective clauses. It is not used to introduce non-defining relative clauses.
Incorrect: My brother, that lives in Polatlı, is going to get married next week.
Correct: My brother that lives in Polatlı is going to get married next week.
4-If we have some modifiers before a noun, these modifiers are enough to identify the noun, so the adjective clause becomes non-defining one.
♦My grammar book, which is at home, is not very expensive.
♦The first grammar test, which was on the uses of tenses, was difficult for me.
5-The names of specific places, persons, and geographical locations usually do not require a necessary adjective clause. These are called proper names (özel isimler).
♦Denver, which is a beautiful city, has two universities.
♦Nelson Mandela, who spent many years in prison, became the first black president of South Africa.
NOTE: Bazen adjective clause bütün bir cümleyi niteleyebilir.Ancak bu kullanım daha çok konuşma dilindedir. Yazı dilinde kullanıldığında adjective clause cümlenin kalan kısmından virgülle ayrılır. Ayrıca bu sıfat cümleciklerinde sadece WHICH kullanılır.
♦John made high grades on his exams, which made his parents happy.
♦Jim tried to sing at the party, which made everyone laugh.
Functions of Relative Pronouns
Relative Pronouns can be used as subjects of adjective clauses, objects of adjective clauses, and objects of prepositions.
1-The relative pronouns who, which, and that can be used as the subjects of adjective clause.
♦(I have a friend. He has many classical records.)
A)-I have a friend who has many classical records.
♦( I really enjoy the symphony. The symphony is by Beethoven.)
B)-I really enjoy the symphony which is by Beethoven.
In sentence A, who replaces the subject he. In sentence B, which replaces the subject the symphony.
NOTE: as the subject of a clause, that may replace who or which although who is preferable.
♦I have a friend who has many beautiful classical records.
I have a friend that has many beautiful classical records.
2-The relative pronouns whom, which, and that can be the object of an adjective clause.
♦(She is the friend. I visited her last week.)
A)-She is the friend whom I visited last week.
♦(She has many classical records. She bought the records in Vienna.)
B)-You will like the records which she bought in Vienna.
♦I am looking for the symphony. She bought it last week.
C)-I am looking for the symphony that she bought last week.
In sentence A, whom replaces the object her. In sentence B, which replaces the object the records. In sentence C, that replaces the object it.
NOTE 1: As the object of the clause, that may replace whom or which, but whom is preferable.
♦She is the friend whom I visited last week.
♦ She is the friend that I visited last week.
NOTE 2: Notice that when a relative pronoun is used as the object of the clause, the relative pronoun whom is placed in front of the subject-verb combination.
♦The man whom I met was a famous conductor.
When the relative pronoun functions as the object of the adjective clause, the relative pronoun is often omitted.
♦She is the friend whom I visited last week.
She is the friend I visited last week. (omitted)
NOTE 3: The relative pronoun can be omitted only in defining relative clauses. It is easy to determine when the relative pronoun can be left out. There must be a subject-verb combination after the noun.
3-Sometimes a preposition is used with a relative pronoun. For example, with which, for which, to whom. The preposition is a part of the adjective clause, and it is determined by the verb and meaning.
♦The man had just arrived in the US. We spoke to (or with) (or for) him.
The man to whom we spoke had just arrived in the US.
The man with whom we spoke had just arrived in the US.
The man for whom we spoke had just arrived in the US.
The relative pronouns whom, which and that can be the object of the preposition.
äIn very formal English, the prepositions come before the relative pronouns.
♦The composer to whom I am listening is Mozart.
♦The country in which I was born is Turkey.
äThe prepositions may also be separated from the relative pronoun and placed at the end of the adjective clause.
♦The composer whom I am listening to is Mozart.
♦The country which I was born in is Turkey.
NOTE:When that is used as the object of the preposition, the preposition can never be placed in front of the relative pronoun.♦Correct: The concert that I told you about was last night.
♦Incorrect: the concert about that I told you was last night.