本讲为2007年上半年新的教学内容，请对照教材及练习册听录音！   In the sky   In space   In nature   Could have done   I could have told this to you, but I don’t remember it now.   Far   A great deal   A little/bit bigger   Confusion       Result in   His laziness resulted in his failure.   Result from   His failure resulted from his laziness.   祈使句，and +句子   Study hard, and you can pass the exam.   imagine the earth, and you have…   if…., 句子   If  you imagine the earth, you have…   In practice