帮我看看新概念3的一个语法Thiscangiverisetocurioussituations,asitdidinthecaseofAlfredBloggswhoworkedasadustmanfortheEllesmereCorporation.中的asitdid的did后面为什么没有宾语?还有inthecaseof是不是

Question

帮我看看新概念3的一个语法
This can give rise to curious situations,as it did in the case of Alfred Bloggs who worked as a dustman for the Ellesmere Corporation.中的as it did的did后面为什么没有宾语?还有in the case of 是不是相当于副词?

Answer 1

as it did中的did指代了前文中的give rise to curious situations.

作用相当于,回答一般疑问句时候的Yes, I do. 不是实际意义：做.所以不需要宾语.

in the case of 确实相当于副词,做状语.

因为介词短语一共只有三个功能.

相当于副词,担任各种状语.e.g. I get up at 6:00.

担任表语.e.g. I am at school.

担任后置定语. e.g. The boy under the tree is Tom.