as to something

a) concerning something 关于某事

Frank was very uncertain as to whether it was the right job for him.

弗兰克实在拿不准这工作是不是适合他。

advice as to which suppliers to approach

有关与哪些供应商接洽的建议

He kept his rivals guessing as to his real intentions.

他一直让对手捉摸不透他的真实意图。

b) formal used when you are starting to talk about something new that is connected with what you were talking about before 至于某事

As to our future plans, I think I need only say that the company intends to expand at a steady rate.

至于我们未来的计划，我想我只需要说，公司打算稳步扩展。

Examples from the Corpus

as to something• The President asked for opinions as to the likelihood of war.

→ as to something at as2(8)