OK, let me rewrite my original question to make things clear.
1:I wonder
what you are doing and who you are becoming.
('what'=interrogative, impossible to replace it with 'that which' or
'the thing(s) which').
2: I like
what you've done here. ('what'=non-interrogative, a
compound of 'noun+relative pronoun', possible to replace it with 'that
which' or 'the thing(s) which').
Now. Consider this example:
| What you do determines the result. |
|
At first glance, this 'what' may seem 'non-interrogative': it can be
replaced with 'that which' or 'the things which'. But if the sentence
was:
| What and how you do deremine the result. |
|
you would take it as interrogative. Same with, say, 'I don't know what
you talking about.' At first, you may interpret this 'what' as a
compound of 'noun+relative pronoun'. But if the 'what' appeared in 'I
don't know who you are and what you talking about', you would rather
take it as interrogative.
So, I think there is an ambiguous case where a 'what' can be
either interrogative kind or non-interrogative kind.
To me, the original sentences that I asked are really ambiguous. The 'what' in 'decription of
what they
are learning'
may
be a compound of 'noun+relative pronoun', but I don't think we can say
it is clearly that kind of 'what'; if it was 'description of how,
where, and
what they
are learning', you would take it otherwise. Same with 'learn
what...' It can be non-interrogative (learn the thing(s) which....) or interrogative(learn who we are and what is natural).
So, my question is, how do you native speakers differentiate such
'whats'? If you don't really differentiate them, how do you perceive
them?