请问She used to go to a lot of parties but having to look after a baby has clipped her wings.
问题描述：
请问She used to go to a lot of parties but having to look after a baby has clipped her wings.
答
having to look after a baby has clipped her wings中having to look after a baby是主语，having做动名词
答
having是have的动名词形式,have to的意思是“必须,不得不”,在这里,having to look after a baby是后半句话的主语,指的是“必须看孩子”这件事.