what引導(dǎo)什么從句做主語(yǔ)

　　What in the world did they think they were doing?

　　他們到底認(rèn)為自己在做什么？

　　Things ain't what they used to be.

　　現(xiàn)在情況不比從前了。

　　Call it what you will, it's still a problem.

　　不管怎么說(shuō)，這仍然是個(gè)問(wèn)題。

　　What do you charge for this type of work?

　　這種活你收多少錢？

　　What do you charge for work of this type?

　　這種活你收多少錢？