Original: We know that sometimes success is measured by how much money you earn.

　　Revised: It does not surprise us to discover that sometimes success is measured in terms of the money you earn.

　　亮点评析
　　如上句的believe一样，know也是非常初级的词汇，作文中出现I believe that…，I know that…这样的表达只能体现考生写作技巧的稚嫩，用It does not surprise us to discover that…替换We know that…并没有改变原句的含义，却使全句顿时增添了亮点。