As fuel prices rose,bus companies raised their fares,and ____

题目

As fuel prices rose,bus companies raised their fares,and ____
A.nether did the airlines
B.neither the airlines did
c.so did the airlines have done
D.so did the airlines
是用到什么语法?

答案

句意：由于油价上涨,汽车公司票价上调了,航空公司也上调了.
So do sb/sth的用法
该结构主要用来说明前面所说的情况也同样适用于后面的人或物,意为“……也一样”.该结构中的助动词 do 根据前文的情况也可换成 is,am,are,was,were,does,did,can,could 等.如：
He passed the exam,and so did I.
=He passed the exam,and I passed the exam,too.
neither 用于两者否定的情况.