In my opinion, you get some advantage if you have a robot to teach you english. First of all, you feel at ease and relaxed. When you make a mistake,you are not embarrassed. Second, the student is in control. You can ask the robot to repeat something over and over again,but you cannot ask your teacher to do that. In addition,learning with a robot is like a game. It is fun. Learning with teacher is usually not like a game. In conclusion,a robot teacher makes you feel at ease and in control,and you have fun