Topic:Seeing a doctor.Type of lesson:New Teaching Aims:1.Knowledge Aim:Ss master the structure and usage of the imperative sentence;2.Ability Aim:Ss can describe health trouble;3.Moral Aim:Ss can offer suggestions.Teaching Focus:1.Ss can understand the structure and usage of the imperative sentence;2.Ss can make a dialogue as a patient and a doctor.Teaching Difficulties:1.Ss can use imperative sentence correctly and freely;2.After this lesson,the Ss can be able to communicate by using what they learnt,thus achieve the purpose of studying a language.