Step 1 情景导入（1分钟）
教师通过师生自由交流，导入本节课的话题。
T：Do you like cooking?
S: Sometimes.
T: Can you make a banana milk shake?
S: Sorry, I can’t.
T: Do you want to learn?
S: of course.
T: Good. This lesson will tell you how to make this kind of milk.
环节说明：由美味可口的奶昔引出它的做法，激起学生的学习兴趣。
