通常将分子读为基数,将分母读为序数。 1/2 = a (or one) half 1/3 = a (or one) third 1/4 = a quarter or one fouth 1/5 = a (or one) fifth 2/3 = two thirds 9/10 = nine tenths 53/4 = five and three quarters 15/64= fifteen over (or by) sixty-four 15% = fifteen per cent 4‰ = four per mill