英语单词中一词多义的现象非常普遍,有时一个单词有多种词性或多种意思;即便是只有一种词性的单词,有时也有几种不同的意思和不同的用法,单词 as 就是一例。笔者在教学中发现,学生对 as 一词的意思和用法感到困惑,在使用时经常混淆。在此,笔者综合初、高中所学内容,就 as 的用法总结如下:一、as 作介词1.as 作介词时,可以用来说明某人的职业、职务或某事的用途、作用等,译为“作为,当作”。例如:As a League member,you should think The polysemy phenomenon in English words is very common. Sometimes a word has multiple parts of speech or multiple meanings; even if there is only one word of speech, sometimes there are several different meanings and different usages. The word as is an example. In my teaching, the author found that students are confused about the meaning and usage of the word as and often confused when using it. Here, the author synthesizes the contents of elementary and high school lessons and summarizes the usage of as: 1. As preposition 1.as As a preposition, it can be used to explain someone’s occupation, role or purpose, role, etc. Translated into “as, as ”. For example: As a League member, you should think