Unit 8 How do you make a banana milk shake?单元知识结构图:How do you make a banana milk shake?First, peel the bananas.Next, put the bananas in the blender.Then, pour the milk into the blender.Finally, turn on the blender.How many bananas do we need? ---- We need three bananas.How much yogurt do we need? ----We need one cup of yogurt.