NOTE 3, TO RULE 29, Adjectives are sometimes improperly applied as
adverbs; as, indifferent honest; excellent well; miserable poor:--She
writes elegant; He is walking slow.
The adjectives _indifferent, excellent_, and _miserable_, are here
improperly used, because adjectives do not express the degree of
adjectives or adverbs, but such modifications are denoted by adverbs.
The phrases should, therefore, be, "_indifferently_ honest,
_excellently_ well, _miserably_ poor." _Elegant_ and _slow_ are also
inaccurate, for it is not the office of the adjective to express the
manner, time, or place of the action of verbs and participles, but it is
_the office_ of the adverb. The constructions should be, "She writes
_elegantly_; He is walking _slowly_."
You may correct the following examples several times over, and explain
the principles that are violated.