What kind of music does Jane like listening to?
- Why do you use the auxiliary verb in this sentence?
- Why is the preposition at the end of the sentence?
Because do-support for questions is as fundamental — and obligatory — an aspect of English grammar as inversion is. Do-support is not something that many other European languages make use of
Although McWhorter has posited a Celtic origin for it, this is a minority view among linguists. Given its existence even in Old English and its concurrent appearance in the Celtic tongues, it seems more likely that do-support “arose in response to a gap in the developing auxiliary system” rather than from a Celtic innovation somehow imported by English.
<——after the Norman Conquest and subsequent occupation, grammatically and genetically English remains a fundamentally Germanic language like Danish or Dutch or German ᴀɴᴅ ɴᴏᴛ a Romance language like French or Spanish or Portuguese or Italian, pied-piping is so unnatural for us that doing without
<——is just something you’ll have to get used to.