my new glasses cost me （three times as much as ）the last pair that i bought为什么不能
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my new glasses cost me （three times as much as ）the last pair that i bought为什么不能用three times more than ？是跟cost有关还是怎样？？这里用的是as much as，因为想表示的是 和...一样多，是同级比较；如果换成 more than 就是表示比...多，这样表达的意思不一样。