for those who don't smoke,it is much easier not to start smoking _英语解答

for those who don't smoke,it is much easier not to start smoking than it is to quit it.这句中than后
than后为什么加it is

人气：182 ℃　时间：2020-01-30 03:47:34

解答

这句话是说对于那些不吸烟的人,不开始吸烟比戒烟的容易多了.
it is 那句是形式主语 those who don't smoke是真正的主语前后主语一致