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JaxTeller Posted 14 years ago
Grammar

how to/when to use ''as to''

Hi,

I want to know when to use as to in a sentence. I found this on the internet:

I understood the biological concept that Billy explained last night, but as to how he plans to apply it still requires some clarification.

Can I leave out as to in this example.

Thanks
  

Top answer

That is a mistake. You can't use "as to" that way. The sentence becomes correct when you simply remove "as to".

— Enoon

  • That is a mistake.
  • You can't use "as to" that way.
  • The sentence becomes correct when you simply remove "as to".
  • " That isn't especially good, but it is idiomatic and grammatical.
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6 Answers
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That is a mistake. You can't use "as to" that way. The sentence becomes correct when you simply remove "as to". You could make it, "I understood the biological concept that Billy explained last night, but as to how he plans to apply it, I still need some clarification." That isn't especially good, but it is idiomatic and grammatical.
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how about this sentence:

is there a reason as to why you did that?
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Same deal. You could even lose "why", too. It is not a sentence, by the way—it begins with a lowercase letter.
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As to means with respect to or about. Here's an example of its correct use: I am confused as to what to do next.


The following constructions are redundant and incorrect:
Reason why
Reason as to why
Reason is because
Reason why is because


Instead, use just reason or reason that.
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Hi Emre

Please have a look at the Cambridge dictionary:
http://dictionary.cambridge.org/dictionary/british/as-to

as to

formal

›

› about:

He was
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