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B_ Work in a group. Discuss these questions.

If you could go back in time, what year or time period would you want to visit?
Why would you want to go back to that year or time period?

What do you think you would see?
What would you want to change about that year or time period?

Chart 5 LISTEN & SPEAK.
13.1, 13.3,
13.5 A_ Read the questions in the chart. Then listen to the podcast about a physicist and take notes
on the answers.
cD4-11

1. Why did young Mallett want to go back in time? His father died.

2. What did he read that made him think about
making a time machine?

3. What could Mallett do if he had a time
machine?

4.Why did Mallett keep his work a secret?

5. What does Mallet believe will happen if he
keeps making progress?

6. How could time machines be helpful?

B_ In your notebook, write sentences using the information from the chart in exercise A. Use
conditionals.

If his father hadn't died, Mallett wouldn't have wanted to go back in time.

Charts © WRITE & SPEAK.
13.1-13.6
A Work with a partner. Your teacher will assign you one of the opinions below. In your
notebook, write a list of reasons to support this opinion.

1. Governments should fund research on time machines.

2. Governments should not fund research on time machines.

B Get together with another pair of students who discussed the opposite opinion. Have
a debate about this question: Do you think governments should fund research on time
machines? Use conditionals when giving your reasons.

Governments should fund work on time machines. If researchers were able to do more work in this
area, they might make other important discoveries about our world.

C Decide which team had the better argument. Then discuss your real opinion about this
topic.

UNIT 13 REVIEW THE GRAMMAR 387
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