In this Business English lesson plan for adults, students watch a video about how to structure a sales proposal. It includes discussion questions and activities about accepting offers, counter proposals, and the sales process. Students learn some important vocabulary terms related to proposal structure. Students also do some activities using the important vocabulary terms from the video. For grammar, students do exercises on how to use 'get + someone + doing something.' In the cooperation activity, students can do an activity on making a sales proposal.