Step 1 Revision
Check the answers to the grammar exercises on Page 21 and explain the difficult ones.
Step 2 Lead－in by reading the following sentences
By the end of 2003，an estimated 42 million around the world were living with HIV/AIDS.
During the year,5 million people became infected and an estimated 3 million people died.
About one－third of people living with HIV/AIDS are 15－24 years of age.More than 7 million people in Asia and the Pacific are living with HIV/AIDS.
Step 3 Pre－reading
