什么英语形容词既是形容词又是副词

归纳：常见的既是副词又是形容词的词：
英语中有一类既是形容词又是副词的词：
back hard little right deep high long short direct still early just much straight enough kindly near well far late pretty wrong fast left
副词：Came back soon.形容词：the back door
副词：You can dail Rome direct.形容词：the most direct route
副词：He led us wrong.形容词：This is the wrong way.
他们有些词也可以加ly,但用法如下：
deeply 主要用于表达情感：
He was deeply offended.
directly 主要用于时间和联系方面
He will be here directly.
The new regulations will affect us directly.
highly 主要用于表示抽象概念：
He was a highly paid official.
They spoke very highly of him.
lately (=recently):
Have you seen him lately?
nearly (=almost)
I'm nearly ready.
prettily 与形容词pretty相对应：
Her little girls are always prettily dressed.
而pretty也可用于程度副词,相当于very:
The exam was pretty difficult.
rightly与一个过去分词连用,意为：justly,correctly:
He was rightly/justly pubished.
wrongly:
He acted wrongly.意为：他在行为或道义上做得不对.

hard , loud,pretty

friend
love