本讲为2007年上半年新的教学课程，请对照教材和练习册听录音！
  There is a book on the desk.
  A book is there on the desk.  
  1.                   on the average, there are about 1000 visitors every day.
  2.                   The Atlantic ocean is only half as big as the pacific , but it is more than 4000 miles wide.
  3.                   Last night it took him a long time to go to sleep.
  4.                   There are so many ads on TV that we cannot remember how many they are.
  5.                   Many wrong ideas made people in Columbus’ time unwilling to sail westward.
  6.                   The sailors were afraid that they might meet with bad weather.
  7.                   The mountain is half as high as Mountain Tai.
  8.                   on the average there are 45 pupils in each class in this school.
  9.                   Climates affect the growth of plants.
  10.               My work is piling up .
  one third
  Two thirds

Three fourths