rather than 在平行结构中的用法或什么时候必须使用平行结构

题目

rather than 在平行结构中的用法或什么时候必须使用平行结构
1、Rather than invest in my education,my parents spent their money on a new house.2、Rather than risk breaking up with his wife,he told her everything.
invest与spent ,risk与told 是平行结构但时态不同,不是说平行结构时,时态要保持一致么?如：I have bought that rather than have bought this.
两个have bought 是平行结构且时态一致.
我只是使用了匿名提问而已~

答案

在这两个句子中rather than用作从属连词,引导一种优先分句.
R.Quirk在《英语语法大全》p.1540指出：优先分句主要用从属连词rather than和sooner than引导,用不带to的不定式作该分句的谓语动词：
如：Rather than go there by air,I'd take the slowest train.
我宁愿乘最慢的火车,也不愿乘飞机去那儿.