The reason is this. The verb ‘to learn’ needs an expressed object. For instance, we do not say, ‘He learns.’ We can, of course, say, ‘He learns quickly,’ or ‘He is willing to learn,’ but these are special cases where the focal point of the sentence is not in the word ‘learn’. We do, on the other hand, say, ‘He studies.’ There is, however, another difference between ‘learning’ and ‘studying’. We tend to ‘learn’ some things but ‘study’ others. For instance, a child learns to walk but an entomologist studies the behaviour of ants. We learn something practical; we study something theoretical. In
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