I£®Teaching Objectives:
After learning this unit, students are supposed to:
  1. get familiar with the rules of word formation ;
  2. get familiar with some grammatical points;
3. retell the text as a whole;
4. have a thorough understanding of the whole text: Thinking as a Hobby
 5. get a list of the new words and expressions and be able to use them freely in writing and daily conversation;