Non-defining relative clauses: Practice Questions

Which of the following sentences correctly uses commas for a non-defining relative clause to add extra information about a specific location?

Which sentence uses a non-defining relative clause correctly?

Which relative pronoun should be used to refer to the entire preceding clause in this sentence?
He failed his driving test again, ______ was a huge disappointment to his parents.

In the following sentence, identify the non-defining relative clause:

Our school library, which was recently renovated, contains over ten thousand books.

Which of the following is a grammatically correct non-defining relative clause describing a person's relative?

Which of the following sentences correctly uses a non-defining relative clause to provide extra information about a specific city?

a) Tokyo which is the capital of Japan is a very crowded city.
b) Tokyo, that is the capital of Japan, is a very crowded city.
c) Tokyo, which is the capital of Japan, is a very crowded city.

Identify the error in the following sentence containing a non-defining relative clause and rewrite it correctly:

My elder brother who lives in London is coming to visit us next week.

A student wrote the following sentence: "The Great Wall of China which can be seen from space is a popular tourist site."

Correct the student's grammatical errors regarding non-defining relative clauses and explain why the original version was confusing for the reader.

Review the following pairs of sentences and follow the instructions to combine them into single sentences. Pay close attention to punctuation and the specific type of relative clause requested.

1. Combine the following two sentences using a non-defining relative clause:
My math teacher just won an award for excellence. Her name is Ms. Lee.

2. Combine the following two sentences using a non-defining relative clause:
The city of Kyoto is famous for its beautiful temples. It was once the capital of Japan.

3. Explain two key differences between defining and non-defining relative clauses regarding their meaning and the use of commas.

Read the following short profile about a famous environmentalist. Then, combine the pairs of sentences provided below to form single sentences using non-defining relative clauses. Pay close attention to punctuation and the correct relative pronoun (who, which, or whose).

Environmentalist Profile: Dr. Elena Rivers is a world-renowned marine biologist. She recently published a groundbreaking study on coral reef restoration. Her foundation, 'Blue Horizon', has saved thousands of endangered sea turtles.

a. Dr. Elena Rivers is a world-renowned marine biologist. She recently published a groundbreaking study on coral reef restoration.
b. Dr. Elena Rivers runs a foundation called 'Blue Horizon'. Her foundation has saved thousands of endangered sea turtles.
c. The study on coral reef restoration was published last month. It has influenced international fishing policies.
d. Based on the rules of non-defining relative clauses, explain why you cannot use the word that to replace the relative pronouns in your answers for (a), (b), or (c).