I have a sentence that says "He was required to work in the kitchen" (actually, another example, doesn't really matter, the question is in principle): what is the function of "to" here? Is it a complementiser?
Extra question: does the second VP (work) require an IP?
e.g. in this sentence:
As for tree-formation, I am basically using X-bar but I am not really that verse that I can say I am without fault here...