I'm only interested in sitting in a boat and doing nothing at all.请问在为什么要用sitting和doing,而不是sit和do?

I'm only interested in sitting in a boat and doing nothing at all.请问在为什么要用sitting和doing,而不是sit和do?
I'm only interested in sitting in a boat and doing nothing at all.
请问在为什么要用sitting和doing,而不是sit和do?

I'm only interested in sitting in a boat and doing nothing at all.请问在为什么要用sitting和doing,而不是sit和do?
这个是新概念2上的课文啊
因为in 是介词
介词后面必须+动名词 所以do 要变成doing
do与sit中间有and做连词 是并列关系 所以前后都要一致
新概念的课后貌似有解释

因为在interested in的后面用动词的现在分词

in 介词后动词+ing.

in 是介词后面跟动词一定要是ing形式的，and是连词时态跟前面一个动词保持一致

be interested in 短语，对xxxx感兴趣，后面加名词或是动名词的形式，同时in也是介词，介词后面要加名词或是动名词

be interested in +doing
很有趣的做某事

be interested in +doing

be interested in doing sth
短语