He spent his life in the service of others.不是说spend ...on...或spend...(in)doing ...应该是He spent his life on the service of
问题描述：
He spent his life in the service of others.不是说spend ...on...或spend...(in)doing ...应该是He spent his life on the service of others..
答
一点没错,spend...in后面跟动名词,既可以跟动词,也可以跟名词,所以叫跟动名词.