The child is quick to recognize by ear the accurate, the normal position of the adverb.
On the other hand, adverbs of quantity and comparison precede the adjective:
Make a very broad mark on the blackboard.
Place on your table the prism that is least thick.
Permutation gives the following results:
Make a broad very mark on the blackboard.
Place on your table the prism which thick least is, etc., etc.
Adverbs of time and place often ring like trumpet calls to attention at the beginning of the sentence:
Drink the water in the glass now.
Now drink the water in the glass.
(Note: In English the adverb of time, placed at the end of the sentence, gains quite as much emphasis. So for adverbs of place.)