Activity 3

3. Look at the following sentences paying particular attention to the underlined parts:

• The employee complained about his working conditions because his boss gave him too much work.

• The employee would not have complained about his working conditions if his boss had not given him too much work.

• The employee had so much work to do that his health deteriorated.

• If the employee had not had so much work to do, his health would not have deteriorated.