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Chapter 13 Adjective Clauses

The Think TankThe Think Tank

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The Think Tank at the National Zoo in Washington, DC, is

an exhibit that is unique. The project, which scientists call

the Think Tank (“a place to think about thinking”) examines

the biological thinking process of animals. Scientists, who

have different opinions about which animal behaviors

actually involve thinking, say thought has three elements:

image, intention, and flexibility. The scientists at the Think

Tank are studying these elements in many different animals,

but it is the orangutans who are seen as the stars of the

exhibit because they are learning to use symbolic language

on a computer.

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Use who or that as the subject of an adjective clause.

Scientists who have different opinions about animal behavior, say thought has three elements.

who

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Use who or that as the subject of an adjective clause.

The Think Tank at the National Zoo in

Washington, DC, is an exhibit that is unique.

that

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Use who(m), which, that, or Ǿ as the object of the verb in an adjective clause.

The project examines the biological thinking process.

Scientists call the project the Think Tank.

The project, which scientists call the Think Tank, examines the biological thinking process.

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Practice 1Choose all the possible completions.

1. The Think Tank is an exhibit ___ is very interesting.

a. who b. that c. which d. Ǿ e. whom f. it

2. The scientists ___ work there are studying “thinking.”

a. who b. that c. which d. Ǿ e. whom f. they

3. Let’s go to the new exhibit ___ Tom told us about.

a. who b. that c. which d. Ǿ e. whom f. it

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Practice 1Choose all the possible completions.

4. It’s the scientists ___ are studying the orangutans.

a. who b. that c. which d. Ǿ e. whom f. they

5. The Think Tank is a place ___ I’d like to visit.

a. who b. that c. which d. Ǿ e. whom f. it

6. The study ___ goes on all day is open to the public.

a. who b. that c. which d. Ǿ e. whom f. it

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The orangutans are the ones whose language ability is

being examined. Four orangutans are being trained to use a

special computer which is set up so they learn around 70

different symbols. These symbols, which consist of seven

categories such as food and verbs, use simple shapes. For

example, a rectangle by itself means “food”. Scientists want

to see if once the orangutans learn the symbols, they can

putwords together to express thoughts. The orangutans visit

the Think Tank when they want, and their participation is

voluntary. The building where they live is linked to The Think

Tank by cables that they can travel back and forth on. On

days when they go to the Think Tank, they can choose if

they want to participate or just watch.

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Use whose to show possession in adjective clauses.

whose

The orangutans are the ones whose language

ability is being examined.

Whose language ability is being studied?

The orangutans.

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Use when to modify a noun of time in adjective clauses.

whenOn days when they go to the Think Tank,

they can choose if they want to participate or just watch.

What does ‘when” refer to?

On days they go to the Think Tank.

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Use where to modify a place.

where

The building where they live is linked to The

Think Tank by cables.

Which place is “where” referring to?

The building

The Think Tank

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Practice 2Make one sentence out of the two sentences by using adjective clauses.

3. Here are some children. Their parents have brought them to the zoo.

2. The scientists study the animals. The animals are awake then.

1. The Think Tank is in the zoo. All this activity takes place is in The Think Tank.

Here are some children whose parents have brought them to the zoo.

The scientists study the animals when they are awake.

The Think tank, where all this activity takes place, is in the zoo.

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ReviewComplete the sentences. More than one answer may be possible. Discuss your choices.

1. The symbols have no visual relationship to the words _____ they represent.

a. who b. that c. which d. Ǿ e. whom f. where

2. The Think Tank is the only place in the world _____ visitors have free access to this type of research.

a. who b. that c. which d. Ǿ e. where f. when

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ReviewComplete the sentences. More than one answer may be possible. Discuss your choices.

3. The words _____ the orangutans are learning will be used to form simple sentences.

a. who b. that c. which d. Ǿ e. whom f. where

4. How do the orangutans make the connection from the word to the thing _____ it represents?

a. who b. that c. which d. Ǿ e. whom f. when

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