GWD－4－4，详解本题的同学必上700+！

derAnwalt

首先，times做比较时的用法
1）X times+as+adij./adv.+as
2）X times+the+n.
3）X times more than

其次，分析句子结构
A new hair-growing drug is being sold for three times the price[, per milligram, ]that the drug’s maker charges () for another product with the same active ingredient.

per milligram是插入语。that定语从句，先行词price，从句中作为charges的宾语three times the price that the drug's maker charges

如有不对请指正

-- by 会员 tintinc (2011/3/28 19:37:57)