It is disturbing to think that a dangerous wild animal is still at large in the quiet countryside.it 引导的是社么句子 做什么
问题描述：
It is disturbing to think that a dangerous wild animal is still at large in the quiet countryside.
it 引导的是社么句子 做什么
答
It 是形式主语，真正的主语是后面的动词不定式结构，因为它太长了，影响句子的平衡，所以就用it代替了，这句话是新概念英语3第一篇课文，你可以查一下哦
答
It是形式主语
答
it 引导的是to think that a dangerous wild animal is still at large in the quiet countryside
动词不定式做主语.