以-ly结尾的形容词
有些以-ly结尾的词通常不是副词，而是形容词，如costly, cowardly, lovely, lonely, lively, friendly, unfriendly, silly, ugly, womanly, motherly, fatherly, brotherly, sisterly, elderly等，这类形容词大多是用来描述人的品质的。如：
She smiled in a friendly way. 她友好地微微一笑。
Spring is a lovely season. 春天是可爱的季节。
I’m surprised that he should feel lonely. 我很惊讶他竟感到孤独。
One-tenth of the population are elderly people. 十分之一的人口是老年人。
有些-ly结尾的既可形容词也是副词，如daily, weekly, monthly, quarterly, yearly, likely, early等既可也可用作形容词。如：
I hope to catch an early train. I want to arrive early. 我希望赶上早班火车，我想早到。
I receive weekly bills. I pay my bills weekly. 我收到的是周账单，我是按周付清账单的。