do harm to/does harm to

问题描述:

do harm to/does harm to
More and more people have realized that somking_______.(有害健康)
do harm to 还是does harm to.为什么?

does 因为smoking这样的动名词作为主语的时候应该看成是第三人称单数,也就是一件事,所以应该用does harm to
quite right!