© 2016 National Geographic Learning, a part of Cengage Learning, ALL RIGHTS RESERVED. Communicative activities 213 1.1 Describing a graph Student A The graph below shows research into changing ideas about three items. Your partner has information about three other items (clothes dryers, microwaves and computers). Take turns to describe the missing trend lines and draw them on the graph. Use sentences with the perfect aspect. Communicative activities Student B The graph below shows research into changing ideas about three items. Your partner has information about three other items (cars, air-conditioning and smartphones). Take turns to describe the missing trend lines and draw them on the graph. Use sentences with the perfect aspect. 1980 Car Air conditioning Do you think of this as a necessity? (% rating each item as a necessity) Year Smartphone 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% 1985 1990 1995 2000 2005 2010 2015 2020 Clothes dryer Microwave Computer Do you think of this as a necessity? (% rating each item as a necessity) Year 1980 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% 1985 1990 1995 2000 2005 2010 2015 2020 C1_TB_16_comm-act_213-246_ptg01.indd 213 10/15/15 11:24 PM