just 与as有何区别？

like <名词//动词不讨论>为介词或作为副词, 而as为副词/连词; 重点是要比较介词与连词的区别, 介词只能接名词结构, 而连词则可以接句子. [差异很清楚的, 唯一麻烦的是美式英语中, 经常将like当as用, 就像我们说A is different from B. 老美偏偏要说 A is different than B.这在正式语法规则中是错误的用法.]

like用作:介词

象以…的典型方式：
It's not like you to take offense.
你不象会发脾气的人

以与…同样的方式：
lived like royalty.
过着帝王般的生活

想要倾向，有意于：
felt like running away.
想要逃跑

象要似有…的可能性：
looks like a bad year for farmers.
看起来象农民的欠收年

例如；象一样：
save things like < = such as > old newspapers and pieces of string.
收集如旧报纸和绳子之类的东西

like用作:副词
worked like hell; ran like crazy.
拼命工作；发疯似的跑

AS用作:副词
含义明确, 使用场合少
同样；相同
He runs fast, but I run just as fast.
他跑得快，但我跑得同样快。
被看作；被认为是
man as described by scientists
科学家所描述的人类

AS用作:连词
（用于比较）与…一样
He can run as fast as I can.
他能跑得和我一样快。
She works in the same building as my sister.
她和我的妹妹在同一大楼上班。
This is the same as it was before.
这个与以前一样。
[上面三个例句美国人都有可能用like]
诸如
such animals as cats and dogs
诸如猫、狗之类的动物