freely and properly in speaking and writing.

　　Emotional Aims

　　Encourage the students learn more about the grammar.

　　Help the students to form the good habit in learning.

　　Encourage the students to do more exercises to consolidate their knowledge.

　　Teaching Procedure

　　Step 1 Greeting

　　T: Hello, my friends.

　　Ss: Hello, Miss...

　　Step 2 Revision

　　T: Do you still remember what you learned in this unit? Would you please say something about the great scientists we learned in this unit.First please something about John Snow.

　　S: John snow, a well-known doctor in London, defeated cholera.

　　S: He got interested in two theories explaining how cholera killed people.

　　S: John Snow gathered the information and marked it on a map where all the dead people had lived.

　　S: He discovered that many of the deaths were near the water. It seemed the water was to blame.

Ss: ...