在英语中某些词有两种或两种以上的形容词形式，它们词形相近，但词义不同，容易用错，下面笔者对这类形容词做一总结。
1)historic: famous in history, 历史上著名的 associated with past times 与过去时代有关的
a ~ event/speech/spot
historical: belong to history 历史上的
a ~ people/novel/play/film/painting
~ trend
2) electric: worked by, changed with， producing electricity 用电的，带电的, 有电的
~ current/cable
electrical: relating to electricity, an idea of a less close connection with electricity
~ engineering/apparatus
3) economic: of economics
~ policy/geography/crisis/crops
economical: careful in the spending of money and time, not waste 经济的，节俭的
an ~ housewife/store
4) industrial: of industries 工业的
the ~ revolution/products/system
industrious: hard-working, diligent
~ people
5) considerable: great much 相当多（大）的
a ~ income/distance
considerate: thoughtful 体谅的， 体贴的 周到的
She is ~ to others.
