spend on 后面是用动词ing形式吗A lot of money is spent on research into the causes of cancer.spend on 后面怎么没用动词ing形式?谢.
问题描述：
spend on 后面是用动词ing形式吗
A lot of money is spent on research into the causes of cancer.
spend on 后面怎么没用动词ing形式?
谢.
答
research 在这里是名词,research into 探究,调查的意思
而这里应该是指对致癌原因的研究,into表示针对的对象
答
sb spends time on sth= it takes sb time to do sth.
sth costs sb money=sb spends money on sth=sb pays money for sth.
sb spends money on sth=sb pays money for sth.
答
人+spend money/time （in ）doing sth 做某事花了多少钱或多少时间
人+spend money on sth 买sth花了多少钱
两种用法,明白了吧!
答
spend in 后面加ing