Разница между adverbs of manner и adverbs of frequency заключается в их значении:
Таким образом, adverbs of manner описывают способ действия, а adverbs of frequency — частоту действия. 14
Примеры adverbs of manner: cheerfully, efficiently, painfully, secretly, quietly, peacefully, carefully, slowly, badly, closely, easily, well, fast, quickly. 3 Примеры adverbs of frequency: always, sometimes, often/frequently, normally/generally, usually, occasionally, seldom, rarely/hardly ever, never. 3