原式=1-(1/2)^-1+(2/3)^2008*(-1.5)^2009 =1-2+(-3/2)(2/3)^2008*(-3/2)^2008 =-1+(-3/2)(2/3)*(-3/2)^2008 =-1+(-3/2)(-1)^2008 =-1+(-3/2) =-5/2
