The use of 'learn + a gerund'

Basically, we say learn + to + inf.

You may also say both are correct grammatically, but I don't think the two structures are interchangeable.

Examples:

I learn English.
I learn to dance. / I learn dancing.
I learn to speak English.

The above sentences are all correct. But do you think it sounds good to say [I am learning dancing] ? English, dancing etc. can be regarded as names of subjects, but what about speaking? I think it's just correct to say [The little baby is learning speaking], but I prefer [The little baby is learning (how) to speak.]

In many cases, a verb (e.g learn) + gerund is no different from a verb + to + (another verb).

The oft-quoted example which is used to show a difference between the two usages is where the first verb is "stop".

For example, there is a difference between "I stop to ask him where the chocolate is" and "I stop asking him where the chocolate is". In the first sentence, I stop something in the first place in order to ask him the question". In the second sentence, in the beginning I was asking but now I stop.