是不是for example后加一个句子 such as 后加几个短语或单词?我们英语书上写：They can stop studying some subjects if they do not like them ,for example ,History and French .下面又有一句：They can choose other subjects like Art and Computer Science ,or languages such as Spanish and German .同样是加两种语言为什么一个for example 一个such as for example后加一个句子 such as 后加几个短语或单词 的as 和 like作 像 ..意思时 as后加句子 like 后加单词（可以两个）吗?上面写的：They can choose other subjects like Art and Computer Science
是不是for example后加一个句子 such as 后加几个短语或单词?我们英语书上写：
They can stop studying some subjects if they do not like them ,for example ,History and French .
下面又有一句：They can choose other subjects like Art and Computer Science ,or languages such as Spanish and German .
同样是加两种语言为什么一个for example 一个such as for example后加一个句子 such as 后加几个短语或单词 的
as 和 like作 像 ..意思时 as后加句子 like 后加单词（可以两个）吗?上面写的：They can choose other subjects like Art and Computer Science
1. 两句中,for example和such as可以换用.
such as视为介词,其后只能加名词性结构；
而for example更加开放,既可以加名词性结构,也可以加短语,甚至可以加句子.
而且,for example一般只举一例,但是也可以举多例,只不过前者情况更常见.
such as后的例句一般举多例,不能只举一例.
2. 第二句中是such as,并不是单独的as.
as表示“像...一样”时,视为连词,引导从句,不过其后的从句常常采用省略结构,在口语中甚至视为介词.
比如：He is as tall as me/I.
He is as tall as I am.
like表示例举时,等同于such as,为介词,其后一般只加名词性结构,并且一般举多例.
当然它做比喻时,也是介词,其后也加名词性结构.