according to, according 有什么区别呢，在用法上。

according是形容词！可以在后面加上ly，构成副词。

We have receive your letter and have alter the contract accordingly.
我们已收到你的信，因此修改了合同。

according to一般可以引出表示原因或者参考等的状语

1. 根据;按照
They divided themselves into three groups according to age.
他们按年龄分成三组。

2. 取决于
We will go or we won't, according to circumstances.
我们或去或不去,都将视情况而定。

3. 据...所载;据...所说
According to the Bible, Adam was the first man.
据《圣经》记载,亚当是人类始祖。
According to her, grandfather called at noon.
据她说,祖父在中午打来电话。