Lesson 4 Do they work?

lesson 4 do they work?
teaching aims(教学目标):
1.teaching aims about knowledge(知识目标)：
  after this lesson, students should do their utmost to know knowledge as follows:
a. words
   businessman doctor clerk waitress cashier carpenter
  b. phrase
by bus
 on sb’s bicycle
 in a store
walk to
c. sentences structure
 what do they do?
 how do they go to work?
   is he/she a businessman/ doctor/ clerk /waitress /cashier /carpenter? audiotape, powerpoint
2.teaching aims about ability(能力目标)：
   students are wished to have the ability to chant with their partner about each work their family do.
3.teaching aims about motion and value(情感态度、价值观目标)：
  students will know the true spirit of different kind of work, that is do it and enjoy it.
teaching content( 阅读全文