as for/to

as for  

至于, 关于

The thief was caught by the police almost immediately.As for the stolen jewels, they were found in a dustbin.

小偷几乎当时就被警察抓住。至于偷去的宝石, 也在垃圾箱里找到了。

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as to  

至于, 关于

I have no doubts as to your ability.

关于你的能力我毫不怀疑。

按着，根据

We sorted the eggs as to size and colour.

我们按着大小和颜色挑选鸡蛋。

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