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构成法
原级
比较级
最高级
hard
late
early
harder
later
earlier
the hardest
the latest
the earliest
slowly
carefully
more slowly
more carefully
the most slowly
the most carefully
单音节词和少数双音节词,词尾加--er, est
大部分双音节词和多音节词前加—more , most
Do you know comparatives and superlatives of adverbs?
Work out the rules