like与as做“像”的意思时,其用法如何区别?

例句与用法放在be动词或实意动词之后,后接名词或名词短语.He is like a son to me.
我待他如同儿子一般.as副词adv.1.同样地,一样地 She is as tall as her mother.她和她母亲一样高.The dining room was twice as big as the Tom's.这个餐厅比汤姆的餐厅大一倍.This is as difficult a problem as you are likely to meet.像这样的难题,你可能会碰到.介词prep.1.(表示时间)当还是…的时候 As a schoolboy,he showed every sign of genius.当他还是个小学生的时候,就显示出了天资聪慧.2.(表示方式)以…的身份,以…资格,作为; 以…形式,以作为; 以…角色,扮演…角色; 如同,像 3.(表示结果)成为,看作,看成 We had better treat it as a joke.我们最好把它当作玩笑.4.(表示目的)为了,以…为目的 The dykes were built as a protection against the sea.建筑堤坝是为了防止海水泛滥.5.(表示举例)例如,诸如…之类的 We talked about such subjects as the weather.我们谈论了诸如天气之类的话题.连接词 conj.1.在…期间,当…时候 I was coming in as he was going out.我进来的时候,他正出去.2.尽管,即使,虽然 Intelligent as you are,I suspect you will fail.尽管你聪明,我猜想你会失败.3.像…一样 4.由于,因为 As you weren't there I left a message.因为你不在那里,我留了个信儿.as后面必须直接连接句子,而且是状语从句