I suppose I’ll be happy when I’m earning enough to pay the bills, with a little over to be able to eat out from time to time, and something to plough back into the business.请各位老师分析一下这里不定式to be able to eat out from time to time做啥成分?修饰的对象是谁?
Teachers in every discipline assigned books to their students and used paper to keep track of which student had which book.请问"which student had which book"是什么语法成分?