J. Lawler's comment is spot-on. The sentence is ambiguous and you cannot be confident in the hypotheses you've proposed without making some assumptions.
However, based on your judgement of the supplied statement, you can tell, but it depends on the risk you are willing to take. There are two types of 'risks': believing a possible lie or not believing a possible truth (there are many lies, but oftentimes only one truth, which you may be denying).
Within the context of logic (see Useful Links below), you are making a trade-off between making an inductive inference (premise is likely or probable, being wrong and believing a lie), rather than a deductive inference (premise nearly guarantees truth, being wrong and not believing the truth).
Omitting a potentially lengthy introduction to philosophical logic, I would say your two cases boil down to one or two follow up questions:
Are you still learning English?
Have you already learned it?
Remember one of the best ways to apply language (including English) is in situations of two-way communication.
Useful Links: https://en.wikipedia.org/wiki/Logic#Logical_form, https://en.wikipedia.org/wiki/Type_I_and_type_II_errors,