as 引导比较状语从句的省略问题

曹老师，2022年全国英语乙卷中有这样一个句子，请您帮我分析：

Fruit juices, milk-based drinks and most alcoholic drinks are free of the tax, as are small companies manufacturing fewer than 1m litres per year.

as这部分从语法上有点分析不了，请曹老师点播！

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1 个回答

曹荣禄 2023-06-17 10:08

擅长：动词用法,句法问题

这是as引导比较分句，作比较状语。我用简单的句子演示一下。

Mary is tall. So is her sister. so是副词，意为也。so后接操作词+另一个主语。

Mary is tall, as her sister is. as为从属关联词，引导从属句，所以前面用逗号。

Mary is tall, as is her sister. as分句可以用倒装语序，主语后移到句末。