(用于rather,sooner之后)与其...(宁愿...)I would rather do some reading at home than go shopping with them.与其和他们去购物,我倒宁愿留在家里读点书.这里的话可以前后都用原形.
给你总结一下：后接动词用不定式还是动名词
1.当连接两个非谓语动词时,通常应使用一样的形式.如：
It is much easier to get into debt than to get out of it.借债容易还债难.
He likes playing chess more than watching TV.与看电视相比,他更喜欢下棋.
比较：
He thinks it is safer to drive himself than (to) let me drive.
=He thinks that driving himself is safer than letting me drive.他认为他自己开车比让我开车要更安全些.
2.若不是连接两个非谓语动词,则其后出现的动词通常用动名词形式(虽然也可用不定式,但不如用动名词普通).如：
There are worse calamities than failing your driving test.比起你驾驶考试不合格来说,更大的灾难还多着呢.
Nothing gives me more pleasure than listening to Mozart.再没有比听莫扎特的乐曲更让我高兴的事了.
Nothing is more unpleasant than finding [to find] insects in your bath.最使人不快的是在浴室里发现有虫子