a. I can do it in any manner.
I think that means that I can do it in all possible ways.
b. I doubt you can do it in any manner.
It seems to me that (b) is ambiguous.
It could mean
1. I doubt you can do it at all.
or
2. I doubt that you can do it in all possible ways.
I think meaning (1) is far more likely, but it seems to me that meaning (2) is possible, although I'd say that 'any' will have to be stressed.
Am I correct?
Many thanks
