Page 271 - Grammar Explorer 2 - demo

2 CHECK. Read the statements. Circle T for true or F for false.
1. Whales and dolphins depend on sound for communication. T F

2. Ships cause problems for dolphins. T F

3. When dolphins can’t hear, they can find their way correctly. T F

4. Mother whales don’t need to be in contact with their babies. T F

5. Curtains of bubbles will make more underwater noise. T F

3 DISCOVER. Complete the exercises to learn about the grammar in this lesson.
A Find these sentences in the article from exercise 1. Write the missing words.

1. However, if the underwater noise too loud, whales and dolphins

communicating.

2. If dolphins and whales communicating, important information
lost.

3. If we nothing, dolphins and whales suffer.

B Look at the words you wrote in exercise A. Then circle the correct answer to complete the
statement. Discuss your answer with your classmates and teacher.

Will is used in . a. clauses that begin with if b. main clauses

UNIT 9 LESSON 3 251
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