Unit 3. There is a policeman near the post office.Period 1教学目标:Able to understand and speak the new words: a bank, a corner, a fence, outside, people, a road, a street, a shopping centre;Able to use the repositions.Able to perform the text.教学重点及难点:重点:Grasp the new words.难点;act out the dialogue, and know the difference between “ someone” and “anyone”.教学方法:解释法,对话法教学准备: tape, picture, recorder etc.教学步骤:Step 1. Warming up.Greeting..