2018-07-10 18:11:34 UTC
Normally that sentence would mean:
1a) I think he can't do anything.
Could it ever mean:
2) I don't think he can do just anything. I don't think he can do anything
Consider this dialogue:
-He is very smart. He can solve any problem.
-I know he is smart, but I don't think he can solve any problem.
In this case, someone is echoing something that has already been said. Maybe
one use 'any' in that way in other situations as well if the intonation is