the reason against to do sth 还是doing sth

the reason against to do sth 还是doing sth
the reason against to do sth 还是doing sth

the reason against to do sth 还是doing sth
against doing sth,因为against是介词,所以如果接动词只能是动名词的形式,类似的情况首先要考虑的就是词性问题,

against 是介词 介词后面+动名词 所以是doing sth

be against doing sth 是对的，但是 尽量不用这个词，如果是 汉译英 尽量用 object to doing 或者be opposed to

against doing sth
I am against killing animals for food.